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ナック

EstablishmentJuly 4, 1961
capital1530Ten thousand
number of employees10
addressTokyo/Hachioji-shi/838-3 Kawamachi
phone042-659-1315
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last updated:Jan 24, 2023
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ナック List of Products and Services

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Air leak test device Air leak test device
Leak Tester Leak Tester
Leak test equipment for the automotive industry Leak test equipment for the automotive industry
Leak testing equipment for the electronics industry Leak testing equipment for the electronics industry
Leak test equipment for the gas and water supply industry Leak test equipment for the gas and water supply industry
Leak testing equipment for the medical, pharmaceutical, and food industries. Leak testing equipment for the medical, pharmaceutical, and food industries.
Differential pressure leak tester Differential pressure leak tester
Pressure measurement related Pressure measurement related
Flow measurement related Flow measurement related
Leak test related products Leak test related products
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Leak testing device for food containers

We contribute to improving quality and production efficiency by automating and standardizing airtightness testing for the medical, pharmaceutical, and food industries.

In today's production factories, depending on the product, a "leak test" for all items is required to maintain high manufacturing quality. However, the conventional "submersion visual inspection" is labor-intensive and makes it difficult to quantify the inspection results. A leak tester is a device that applies pressure (or vacuum) to finished products and parts that need inspection, detecting and measuring pressure changes with a high-sensitivity differential pressure sensor. Since it detects "leaks" electrically, quantification and automation of the inspection are possible. For more details, please download the catalog. *Please note that the photo is just an example as it is designed specifically for the work.

  • Other inspection equipment and devices

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Mask leak test device

We contribute to improving quality and production efficiency by automating and standardizing airtightness testing for the medical, pharmaceutical, and food industries.

In today's production factories, depending on the product, a "leak test" for all items is required to maintain high manufacturing quality. However, the conventional "submersion visual inspection" is labor-intensive and makes quantifying the inspection difficult. The leak tester is a device that applies pressure (or vacuum) to finished products and parts that require inspection, detecting and measuring pressure changes with a high-sensitivity differential pressure sensor. By electrically detecting "leaks," it enables quantification and automation of the inspection process. For more details, please download the catalog.

  • Other inspection equipment and devices

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Syringe leak test device

We contribute to improving quality and production efficiency by automating and standardizing airtightness testing for the medical, pharmaceutical, and food industries.

In today's production factories, depending on the product, a "leak test" for all items is required to maintain high manufacturing quality. However, the traditional "submersion visual inspection" is labor-intensive and makes quantifying the inspection difficult. A leak tester is a device that applies pressure (or vacuum) to finished products and parts that require inspection, detecting and measuring pressure changes with a high-sensitivity differential pressure sensor. By electrically detecting "leaks," it enables quantification and automation of the inspection process. For more details, please download the catalog.

  • Other inspection equipment and devices

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Leak testing device for solenoid valves

We will automate and standardize airtightness testing for the automotive and pneumatic industries, contributing to improved quality and production efficiency.

In today's production factories, depending on the product, a "leak test" for all items is required to maintain high manufacturing quality. However, the conventional "submersion visual inspection" is labor-intensive and makes quantifying the inspection difficult. The leak tester is a device that applies pressure (or vacuum) to finished products or parts that require inspection and detects and measures pressure changes using a high-sensitivity differential pressure sensor. By electrically detecting "leaks," it enables quantification and automation of the inspection process. For more details, please download the catalog.

  • Other inspection equipment and devices

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Leak test device for food containers

We contribute to improving quality and production efficiency by automating and standardizing airtightness testing for the medical, pharmaceutical, and food industries.

In today's production factories, depending on the product, a "leak test" for all items is required to maintain high manufacturing quality. However, the traditional "submersion visual inspection" is labor-intensive and makes quantifying the inspection difficult. A leak tester is a device that applies pressure (or vacuum) to finished products and parts that need inspection, detecting and measuring pressure changes with a high-sensitivity differential pressure sensor. By electrically detecting "leaks," it enables quantification and automation of the inspection process. For more details, please download the catalog. *Please note that the photo is just an example as it is designed specifically for the workpiece.

  • Other inspection equipment and devices

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Differential Pressure Low-Cost Leak Tester 'NLT-360'

Low-cost leak tester for dedicated machines

The NLT-360 is a leak tester that enables the automation and standardization of airtightness testing. It is designed for dedicated machines rather than for a variety of products. Using a comparison measurement method with a leak-free master, it provides numerical inspection results and allows measurements to be conducted without wetting the workpiece, unlike submerged testing. It is widely adopted in various fields that require high-precision airtightness testing, including gas-related industries, plumbing, electrical equipment, automotive parts, medical devices, food containers, and pneumatic and hydraulic equipment. 【Features】 - High precision leak detection through comparison measurement with a leak-free master - Compact design for easy operation - Designed for dedicated machines, making it suitable for customers with no variety *We also respond to the design and manufacturing of auxiliary devices. Please feel free to consult us. *For more details, please refer to the PDF materials or feel free to contact us.

  • Leak Testing Equipment

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Compression Testing Machine (NP-100)

Push test machine suitable for strength testing of welded parts of bolts and nuts.

It can be used for strength testing of bolt and nut welding. It can be easily set up on the manufacturing line for sampling tests. By changing attachments, it can accommodate various types of bolts and nuts. *The catalog can be downloaded from the button below.

  • Testing Equipment and Devices

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Leak test device for solenoid valves

We will automate and standardize airtightness testing for the automotive and pneumatic industries, contributing to improvements in quality and production efficiency.

In today's production factories, depending on the product, a "leak test" for all items is required to maintain high manufacturing quality. However, the conventional "submersion visual inspection" is labor-intensive and makes it difficult to quantify the inspection results. The leak tester is a device that applies pressure (or vacuum) to finished products and parts that require inspection, detecting and measuring pressure changes with a high-sensitivity differential pressure sensor. By electrically detecting "leaks," it enables quantification and automation of the inspection process. For more details, please download the catalog.

  • Other inspection equipment and devices

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Leak test device for check valves

We will automate and standardize airtightness testing for the automotive industry, contributing to improvements in quality and production efficiency.

In today's production factories, depending on the product, a "leak test" for all items is required to maintain high manufacturing quality. However, the conventional "submersion visual inspection" is labor-intensive and makes it difficult to quantify the inspection results. The leak tester is a device that applies pressure (or vacuum) to finished products and parts that require inspection, detecting and measuring pressure changes with a high-sensitivity differential pressure sensor. By electrically detecting "leaks," it enables the quantification and automation of inspections. For more details, please download the catalog.

  • Other inspection equipment and devices

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Check valve leakage testing device

We will automate and standardize airtightness testing for the automotive industry, contributing to improvements in quality and production efficiency.

In today's production factories, depending on the product, a "leak test" for all items is required to maintain high manufacturing quality. However, the conventional "submersion visual inspection" is labor-intensive and makes quantifying the inspection difficult. The leak tester is a device that applies pressure (or vacuum) to finished products and parts that require inspection, detecting and measuring pressure changes with a highly sensitive differential pressure sensor. By electrically detecting "leaks," it enables quantification and automation of the inspection process. For more details, please download the catalog.

  • Other inspection equipment and devices

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Leak test device for ball valves

We will automate and standardize airtightness testing for gas, water, and air-related systems to contribute to improvements in quality and production efficiency.

In today's production factories, depending on the product, a "leak test" for all items is required to maintain high manufacturing quality. However, the conventional "submersion visual inspection" is labor-intensive and makes quantifying the inspection difficult. A leak tester is a device that applies pressure (or vacuum) to finished products or parts that need inspection and detects and measures pressure changes using a highly sensitive differential pressure sensor. By electrically detecting "leaks," it enables quantification and automation of the inspection process. For more details, please download the catalog. We will manufacture it with a design tailored specifically for your work.

  • Other inspection equipment and devices

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Water supply valve leak test device

We will automate and standardize airtightness testing related to water supply systems to contribute to the improvement of quality and production efficiency.

In today's production factories, depending on the product, a "leak test" for all items is required to maintain high manufacturing quality. However, the conventional "submersion visual inspection" is labor-intensive and makes quantifying the inspection difficult. The leak tester is a device that applies pressure (or vacuum) to the finished products or parts that need inspection and detects and measures pressure changes using a high-sensitivity differential pressure sensor. By electrically detecting "leaks," it allows for quantification and automation of the inspection process. For more details, please download the catalog. The design is specialized for specific work, so the photo is just an example.

  • Other inspection equipment and devices

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Automotive valve leak testing device

We will automate and standardize airtightness testing in the automotive sector to contribute to improvements in quality and production efficiency.

In today's production factories, depending on the product, a "leak test" for all items is required to maintain high manufacturing quality. However, the conventional "submersion visual inspection" is labor-intensive and makes it difficult to quantify the inspection results. The leak tester is a device that applies pressure (or vacuum) to the finished products or parts that need inspection and detects and measures changes in pressure using a high-sensitivity differential pressure sensor. By electrically detecting "leaks," it enables quantification and automation of the inspection process. For more details, please download the catalog.

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Leak test device for thermovalves

We will automate and standardize airtightness testing in the automotive sector to contribute to the improvement of quality and production efficiency.

In today's production factories, depending on the product, a "leak test" for all items is required to maintain high manufacturing quality. However, the conventional "submersion visual inspection" is labor-intensive and makes it difficult to quantify the inspection results. The leak tester is a device that applies pressure (or vacuum) to finished products and parts that require inspection, detecting and measuring pressure changes with a high-sensitivity differential pressure sensor. By electrically detecting "leaks," it enables quantification and automation of the inspection process. For more details, please download the catalog.

  • Other inspection equipment and devices

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Leak testing device for thermostatic valves

We will automate and standardize airtightness testing in the automotive sector to contribute to the improvement of quality and production efficiency.

In today's production factories, depending on the product, a "leak test" for all items is required to maintain high manufacturing quality. However, the conventional "submersion visual inspection" is labor-intensive and makes it difficult to quantify the inspection results. The leak tester is a device that applies pressure (or vacuum) to finished products and parts that require inspection, detecting and measuring pressure changes with a high-sensitivity differential pressure sensor. By electrically detecting "leaks," it enables the quantification and automation of inspections. For more details, please download the catalog.

  • Other inspection equipment and devices

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Leak test device for faucet valves

We will automate and standardize airtightness testing related to water supply systems to contribute to improved quality and production efficiency.

In today's production factories, depending on the product, a "leak test" for all items is required to maintain high manufacturing quality. However, the conventional "submersion visual inspection" is labor-intensive and makes quantifying the inspection difficult. A leak tester is a device that applies pressure (or vacuum) to finished products and parts that require inspection, detecting and measuring pressure changes with a high-sensitivity differential pressure sensor. By electrically detecting "leaks," it enables quantification and automation of the inspection process. For more details, please download the catalog. *The photo is just an example as it is specially designed to fit the workpiece.

  • Other inspection equipment and devices

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Air Flow Leak Tester NFT-720

Ideal for air flow tests and leak tests.

At today's production factory, depending on the product, a "leak test" for all items is required to maintain high manufacturing quality. The air flow leak tester is a device that applies a specified pressure to finished products and parts that need inspection and measures the flow rate with a mass flow sensor. It is possible to quantify and automate the inspection. For more details, please download the catalog.

  • Leak Testing Equipment

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Leak Tester (Customer Feedback & Implementation Results Collection)

Basic Knowledge of Leak Testers - Includes benefits of introduction and testimonials and achievements from companies that have actually implemented them! A must-see for those researching leak testing.

This document is a technical material for the leak tester "Leak Tester," which detects leaks in automotive parts, gas appliances, plumbing fixtures, and air and hydraulic systems. Generally, visual inspection using air pressure is employed for leak testing, but the "Leak Tester" allows for both numerical understanding and automation of leak testing simultaneously. This document serves as a useful resource for considering the Leak Tester, including installation achievements, basic knowledge of the Leak Tester, and frequently asked questions (Q&A). 【Contents】 ■ What is a Leak Tester ■ Basic Knowledge of Leak Testers ■ Benefits of Introducing a Leak Tester ■ Case Studies and Customer Feedback ■ Q&A (Frequently Asked Questions) ■ Company Overview *For more details, please refer to the PDF document or feel free to contact us.

  • Leak Testing Equipment

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Technical Documentation: Introduction to Leak Testers

Basic knowledge of leak testing that you can't ask about now, as well as various testing methods, are included.

This document is a technical material for the leak tester "Leak Tester," which detects leaks in gas appliances, plumbing fixtures, and air and hydraulic systems. Generally, visual methods using air pressure are employed for leak testing, but the "Leak Tester" allows for both numerical understanding and automation of leak testing simultaneously. This document introduces fundamental knowledge about the Leak Tester that you may be hesitant to ask about, various leak testing methods, detection sensitivity, and more, making it a useful resource for considering the Leak Tester. Additionally, you can download case studies of our products in use and customer feedback, as well as our comprehensive catalog, so please refer to them. [Contents] ■ The necessity of leak testing ■ The current state of leak testing ■ Methods of leak testing ■ Direct pressure and differential pressure leak testers ■ Detection sensitivity of leak testers ■ Basic knowledge of leak testers ■ Summary of leak testers *For more details, please refer to the PDF document or feel free to contact us.

  • Leak Testing Equipment

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Foot pump type compression testing machine

Ideal for welding strength tests of bolt and nut components.

It will be used for welding strength tests of bolt and nut parts. It can be easily installed on the manufacturing line for random inspections. By changing the attachments, it can accommodate various types of bolts and nuts. *The frame shown in the image is optional.

  • Welding Machine

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Push Test Machine Electric Hydraulic Pump Type

Ideal for welding strength testing of bolt and nut components.

It will be used for welding strength tests of bolt and nut parts. It can be easily installed in the manufacturing line for random inspections. By changing the attachments, it can accommodate various types of bolts and nuts.

  • Testing Equipment and Devices

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Differential Pressure Leak Tester "NLT-730T2" - Ideal for Sealed Workpieces

Automation and standardization of airtightness testing is possible! We also respond to the design and manufacturing of auxiliary equipment.

The NLT-730T2 is a leak tester suitable for products without an air supply port, such as sealed products. It detects leaks with high precision by comparing measurements with a leak-free master. The operation is via a color touch panel with a width of 134 mm and a height of 92 mm, featuring a wide screen. Measurements are taken twice: the first time with reduced sensitivity to detect large leaks, followed by a second measurement for detecting small leaks. 【Features】 - Automation and standardization of airtight testing are possible. - High precision leak detection through comparison with a leak-free master. - Particularly suitable for products without an air supply port, such as sealed products. - Especially designed for products with minimal spatial volume. - Operation is via a color touch panel with a width of 134 mm and a height of 92 mm, featuring a wide screen. *For more details, please refer to the PDF document or feel free to contact us.

  • Other Auto Parts

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Differential Pressure Secondary Measurement Lot Out Leak Tester 'NLT-370'

Since it is a work comparison measurement, it detects leaks with high precision! It enables the automation and standardization of airtightness testing.

The NLT-370 is a leak tester suitable for use with workpieces that have a high production volume and can be lot-released. It detects leaks with high precision through comparative measurement of workpieces. Its compact design makes it easy to operate. It is widely used in applications requiring high-precision airtightness testing, such as gas-related products, plumbing, electrical equipment, automotive parts, medical devices, food containers, and pneumatic and hydraulic equipment. 【Features】 - Enables automation and standardization of airtightness testing - Widely adopted - Detects leaks with high precision through comparative measurement of workpieces - Easy to operate with a compact design - Suitable for use with workpieces that have a high production volume and can be lot-released *For more details, please refer to the PDF document or feel free to contact us.

  • Leak Testing Equipment

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Leak Tester [Reducing Total Costs in Implementation]

At Nack, both air leak testers and embedded devices are developed and manufactured in-house! We do not outsource to external companies, achieving shorter delivery times and cost reductions!

It is common for leak testers (air leak testers) and devices to be manufactured by different companies. As a result, when it comes to equipment maintenance, one has to contact separate companies, leading to double the effort and cost. However, our company custom-manufactures testers and devices according to their intended use. This allows for easy equipment maintenance. Additionally, since we design testers and devices based on their intended purpose, we can provide detailed adjustments tailored to your requests! As a helpful resource for considering leak testers, we are also offering a technical document on leak testers. ■ Strengths of Nakku that differ from other companies - By handling everything from production to maintenance in-house, we reduce the total cost of implementation. After installation, you can simply contact us for support. - We can provide demo data measurements before implementation, so you can proceed with confidence. - We have numerous achievements across various industries (automotive, water and gas piping fittings, electrical and electronic components, etc.) * For more details, please refer to the PDF document or feel free to contact us.

  • Leak Testing Equipment

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Differences between visual inspection by submersion and inspection using an air leak tester.

Can't ask now! Explaining the differences between 'visual inspection for leaks' and 'inspection using a leak tester'! I will also explain the mechanism of air leak testing.

This document is a technical material regarding "Leak Testers (Air Leak Testers)" for leak testing in the automotive, gas and water supply, electronic components, and medical and food industries. Generally, leak testing is performed using a submerged visual method with air pressure, but the "Leak Tester" allows for both numerical understanding and automation of leak testing simultaneously. This document introduces fundamental knowledge about leak testers that you may be hesitant to ask about, various leak testing methods, detection sensitivity, and serves as a useful resource for considering leak testers. Additionally, you can download case studies of our products in use and customer testimonials, as well as our comprehensive catalog, so please refer to them. [Contents] ■ The necessity of leak testing ■ The current state of leak testing ■ Methods of leak testing ■ Direct pressure and differential pressure leak testers ■ Detection sensitivity of leak testers ■ Basic knowledge of leak testers ■ Summary of leak testers * For more details, please refer to the PDF document or feel free to contact us.

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Hand-tightening coupler (for male threads)

Air-tightness testing hand-tight coupler (FA type)

You can connect directly to the male thread you want to connect to, completing the sealing process. The work of wrapping sealing tape and tightening with tools, which was required every time until now, will no longer be necessary. It features a more compact design than the one-touch type. *Note that separate fluid supply and exhaust will be required. ■ Features 1. You can tighten it by hand (no tools needed) to the male thread you want to connect. 2. Sealing occurs when the packing contacts the end face of the male thread. 3. It is excellent in waterproof, water-resistant, and chemical-resistant properties. *You can download the catalog from the download button below.

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Hand-tight coupling (for male threads)

Air-tightness test hand-tight coupling (FB type)

You can seal it simply by connecting it directly to the male thread you want to connect. The work of wrapping sealing tape and tightening it with tools, which was required every time until now, will no longer be necessary. It has a more compact design than the one-touch type. *Separate supply and exhaust for fluids will be required. ■ Features 1. You can tighten it by hand (no tools needed) to the male thread you want to connect. 2. Sealing is achieved by the packing making contact with the end face of the male thread. 3. It is excellent in waterproofing, water resistance, and chemical resistance. *You can download the catalog from the download button below.

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One-touch coupler (for male thread)

One-touch coupler for airtightness testing (FD type)

You can connect to the male thread with a one-touch connection. The work that previously required wrapping seal tape and tightening with tools can now be done with a one-touch connection. Disconnection is also one-touch. *Fluid supply and exhaust will need to be handled separately. ■Features 1. The rear end of the one-touch coupler locks and seals by being pushed into the male thread work side. 2. The release mechanism at the rear end of the one-touch coupler is slid to unlock. 3. It is also excellent in waterproof, water resistance, and chemical resistance. *You can download the catalog from the download button below.

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Six-axis robot leak test device

Fully automated leak test device.

It was very difficult to set the workpiece using a robot in a leak test where a clamping mechanism is essential to seal the workpiece. However, by using a six-axis robot, we were able to gain a certain degree of freedom in movement, which allowed us to resolve the issue. Additionally, for the loading and unloading, we use air cylinders to keep the slide end in its original position, which results in a design that minimizes displacement in the Y (X) axis. We are moving away from conventional semi-automatic machines (manual workpiece setting) and achieving online automation.

  • Other inspection equipment and devices

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Direct Pressure Low-Cost Leak Tester 'NLT-130'

Compact design, master tankless, dedicated machine focused on cost performance leak tester.

The NLT-130 is a direct pressure air leak tester designed with essential functions prioritized for cost-effectiveness. - Recommended for those who want to implement it as cheaply as possible. - Currently conducting all direct pressure air leak tests manually. It features automatic functions from pressurization to measurement and OK/NG judgment after pressing the start button. The displayed value only shows the pressure within the measurement volume (including piping). *No zero reset during measurement transition. 【Features】 ■ Thorough cost performance ■ No difficult adjustments required without a master tank ■ Compact design for easy operation

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Hard disk leak testing device

We will automate and standardize airtightness testing for the electronics industry, contributing to improved quality and production efficiency.

In today's production factories, depending on the product, a "leak test" for all items is required to maintain high manufacturing quality. However, the conventional "submersion visual inspection" is labor-intensive and makes quantifying the inspection difficult. A leak tester is a device that applies pressure (or vacuum) to finished products or parts that need inspection and detects and measures pressure changes using a high-sensitivity differential pressure sensor. By electrically detecting "leaks," it enables quantification and automation of the inspection process. For more details, please download the catalog.

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Leak testing device for piping fittings

We will contribute to improving quality and production efficiency by automating and standardizing airtightness testing for the gas and water supply industry.

In today's production factories, depending on the product, a "leak test" for all items is required to maintain high manufacturing quality. However, the conventional "submersion visual inspection" is labor-intensive and makes quantifying the inspection difficult. The leak tester is a device that applies pressure (or vacuum) to finished products and parts that need inspection, detecting and measuring pressure changes with a high-sensitivity differential pressure sensor. By electrically detecting "leaks," it allows for quantification and automation of the inspection process. For more details, please download the catalog.

  • Other inspection equipment and devices

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High-quality leak tester

No risk of decreased inspection accuracy due to changes in work volume! Let us introduce our strengths.

Our company offers a leak tester that allows "anyone," "easily," to obtain "high-precision results" in a "short time." There are no disadvantages such as "high costs" and "unstable accuracy" like in visual inspections for submersion, and there is no risk of decreased inspection accuracy due to changes in the workpiece's volume. Please feel free to contact us when you need assistance. 【Other strengths of our company】 ■ Complete in-house support from production to maintenance ■ Demo data measurement ■ Reliable trust and track record ■ Leak test lab that meets various needs *For more details, please download the PDF or feel free to contact us.

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Complete in-house support from production to maintenance.

Reduce your costs with total support for leak test equipment!

At our company, we develop all testers and equipment in-house, which allows us to eliminate the need to outsource to external companies, achieving shorter delivery times and cost reductions. It is common for leak testers and equipment to be manufactured by different manufacturers. As a result, during equipment maintenance, it is necessary to contact separate companies, leading to double the effort and costs. However, at Nack Co., Ltd., we custom-make testers and equipment according to their intended use. By designing testers and equipment tailored to their purpose, we can provide detailed adjustments to meet your requirements. [Features] ■ Easy equipment maintenance ■ Custom-made production tailored to applications ■ Detailed adjustments possible *For more information, please download the PDF or feel free to contact us.

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Leak test lab that meets various needs.

We will assist you in introducing the test line using the appropriate method tailored to your objectives.

We have established a leak test lab to conduct the selection of testing methods, data collection, technical guidance, and training. We invite our customers to experience leak testing and support the introduction of suitable methods to the test line according to their objectives. If you have concerns such as "What type of leak test is appropriate?" or "I am using a leak tester, but it is unstable," please feel free to consult with us. 【Leak Test Lab Equipment】 ■ Leak testers: various types of direct pressure and differential pressure ■ Digital pressure gauges and digital flow meters of various types ■ Data loggers, soap film flow meters, leak generators, etc. *For more details, please download the PDF or feel free to contact us.

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A case where the impact of temperature on oil viscosity changes was resolved by a leak tester.

Stable measurements are possible with the air flow method! Measurement of clearance for sleep and spool, etc.

We would like to introduce a case in the automotive industry where the impact of temperature on oil viscosity was resolved using a leak tester. Due to temperature effects, the viscosity of the oil was changing, making stable measurements impossible. However, with the airflow method, stable measurements became achievable. Additionally, the need for post-processing was eliminated, improving work efficiency and the working environment. 【Application Examples】 ■ Clearance measurement of sleeves and spools ■ Defect inspection ■ Adhesion and foreign object detection in acoustic components of smartphones/tablets, etc. *For more details, please download the PDF or feel free to contact us.

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Examples of stable measurements and reduced measurement time using a leak tester.

A case where stable measurements with minimal temperature influence were achieved using a secondary measurement method.

We would like to introduce a case in the water and gas piping joint industry where a leak tester enabled stable measurements and reduced measurement time. As background, stable measurements could not be achieved due to the temperature difference between the workpiece and the master. Additionally, it was necessary to change the master volume depending on the workpiece, making changeovers quite challenging. By using a secondary measurement method, we achieved stable measurements with minimal temperature influence. As a result, it became possible to shorten changeover time and reduce measurement time through multiple part handling. [Case Overview] ■ Background - Stable measurements could not be achieved due to the temperature difference between the workpiece and the master. - Changeovers were difficult as it was necessary to change the master volume depending on the workpiece. ■ Results - Achieved stable measurements with minimal temperature influence through a secondary measurement method. - Enabled reduction of changeover time and measurement time through multiple part handling. *For more details, please download the PDF or feel free to contact us.

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Cases where judgment is possible based on the pressure difference between work and master by a leak tester.

A case where it became possible to determine based on the pressure difference between the workpiece and the master by applying a fixed capacity pressure!

We would like to introduce a case in the electric and electronic components industry where leak testers have enabled judgment based on the pressure difference between the workpiece and the master. As background, there was a situation where, despite wanting to detect leakage in IP67 class products, it was impossible to apply test pressure due to the sealed container, and thus leakage judgment could not be made. By placing the workpiece inside a chamber and applying a fixed volume of pressure, it became possible to determine the pressure difference between the workpiece and the master. 【Application Examples】 ■ Mobile phones / smartphones / tablets ■ Mobile terminals ■ Leisure transceivers ■ Submersible pumps ■ Water meters, etc. *For more details, please download the PDF or feel free to contact us.

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Improving Work Efficiency of Submerged Visual Inspections! 'Leak Tester' Comprehensive Catalog

Submersion and no visual inspection required! Achieve work efficiency with automated leak testing using a leak tester (air leak tester).

Our "Leak Tester," which achieves short delivery times and low costs, adopts pressure testing, eliminating the need for traditional immersion and visual inspections! It is useful for inspections in a wide range of fields, including gas, water supply, and automotive parts. ■ Benefits of Introducing a Leak Tester (Air Leak Tester) → Improved Work Efficiency With a high-sensitivity differential pressure sensor, leaks are detected electrically! High precision inspection can be achieved in a short inspection time, and it can be automated, allowing it to be integrated into mass production lines, resulting in a significant improvement in work efficiency. → Reduction in Labor Costs No technical skills from experienced workers are required! Inspections can be conducted by a small number of people, including preparation, enabling substantial reductions in labor costs. → Enhanced Inspection Accuracy Since it does not rely on human senses, anyone can make accurate judgments and distinctions, leading to a significant improvement in inspection accuracy and preventing "misjudgments" that can occur with human visual inspections! → Simple Equipment Maintenance The leak tester and equipment are custom-made to suit the intended use. Easy and low-cost equipment maintenance is possible by providing a one-stop solution. ★ For more details, please "download" the comprehensive catalog or contact us.

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Pursuing ease of use and visibility! Digital Pressure Gauge NDP-6000

Don't miss the measurement data! Equipped with a large, easy-to-read LED with a character height of 20mm. Introduced a jog dial that emphasizes operability.

● The set values can be visually confirmed with dual display. ● Compact and lightweight panel mount type. ● The display and sensor are of a separated type. ● Easy-to-read display with a wide viewing angle. ● Equipped with a large LED monitor. ◆ Jog Dial Focusing on operability, the digit moves with each push, and you can select the value by turning it up and down. ◆ Main Display To avoid overlooking measurement data, the display section uses a large LED. The main display section features a large character height of 20mm. The display color changes based on the judgment result. It is easy to see at a glance whether the value is within or above the judgment value with two colors: red and green. * The catalog can be downloaded from the button below.

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[Special Price Campaign] "Differential Pressure Low-Cost Leak Tester"

Submersion and no visual inspection required! A leak tester that automates leak testing is available from 580,000 yen (excluding tax) - *Comprehensive catalog also available!*

Our "Leak Tester," which achieves short delivery times and low costs, employs pressure testing, eliminating the need for traditional submersion and visual inspections! It is useful for inspections in a wide range of fields, including gas, water supply, and automotive parts. We are currently running a limited-time campaign for our "Differential Pressure Leak Tester"! The "NLT-360" Leak Tester, which allows for immediate automation of leak testing and consolidates all necessary functions into one unit, is now available at a special price starting from 580,000 yen. *Prices vary based on test pressure; 580,000 yen is limited to 0.2 MPa. 【Features of the "NLT-360"】 ■ Corrects measurement noise based on the measurement workpiece ■ Self-check functions for valves, sensors, test pressure, etc. ■ Automatically and accurately detects leaks by comparing measurements with a non-leaking master ■ Compact size, approximately A4 in size, suitable for desktop use ★ In addition to the above product, you can immediately view our comprehensive catalog featuring many of our "Leak Testers" by clicking the "Download" button.

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Differential Pressure Leak Tester NLT-220, ideal for workpieces sensitive to temperature effects.

Ideal for products that are sensitive to temperature and for high-volume production work.

This leak tester is optimal for products with a high number of inspections and for inspecting thin-walled workpieces that are easily affected by temperature. === For those who wish to request a demo unit or test trial, please contact us or download the catalog === ◆ Equipped with 16 channels that can accommodate various types of workpieces ◆ Built-in functions such as workpiece volume confirmation, correction functions, and error checking functions ◆ Measures two workpieces simultaneously, reducing takt time (1.5 to 2 times faster) ◆ Particularly effective for materials that are easily affected by temperature, such as brass, thin-walled SPC materials, and large-surface-area aluminum materials. ◆ In cases of multiple pieces, the lot-out count can be halved ◆ Individual judgment can be made with OK and NG displays ◆ One operator can operate multiple testers ◆ Can measure the same leakage amount without misjudgment ◆ Standard USB equipped for managing test results ◆ Improved expressiveness with a color touch panel * The catalog can be downloaded from the button below.

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Tensile testing machine

Tensile testing machine! It checks the tensile strength of all types of welding.

Manual load can be applied, allowing for visual observation of shape changes. A tensile test of 20 kN is possible. This product is ideal for sampling inspections. *The catalog can be downloaded from the download button below.

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Please feel free to consult us about anything related to leak tests.

Nack's leak tester, with excellent features such as "easy," "high-precision results," "short time," "low cost," and "automatable," solves your problems!

The leak tester applies pressure or vacuum to finished products and components, and electrically detects pressure changes in the event of a leak using a highly sensitive differential pressure sensor. Since leaks are detected electrically, it is easy to quantify and automate leak testing, which was not possible with traditional visual inspection methods. The elimination of the drying process and the removal of individual differences in detection capability are also significant advantages. We provide testing machines that are particularly suitable for airtightness testing of automotive parts, gas/water supply components, mobile phones, digital cameras, and medical devices. We will verify the testing methods that match your testing conditions at the leak test lab. *For examples of leak tester implementations, please visit our website. For more details, please download the catalog or feel free to contact us.

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One-touch coupler (for male thread)

One-touch coupler for airtightness testing

You can connect to the male thread with a one-touch connection. The work that previously required wrapping seal tape and tightening with tools can now be done with a one-touch connection. Disconnection is also one-touch. *Fluid supply and exhaust will need to be handled separately. ■Features 1. The one-touch coupler locks and seals by being pushed onto the male thread. 2. The sleeve of the one-touch coupler is slid to unlock it. 3. It is also excellent in waterproof, water resistance, and chemical resistance. *You can download the catalog from the download button below.

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