Cavitation in Pumps and How to Avoid It

Pulsation-reducing liquid pump, a diaphragm liquid pump that significantly reduces pulsation generated during pump suction and discharge.

We have reviewed the design of the pump itself as a liquid pump for pulsation reduction measures. Previously, pulsation reduction was achieved using dampers, but now the pump itself significantly suppresses pulsation. - FP7 Series / FP25 Series The pulsation reduction damper has been integrated with the pump. Two types are available: brushed DC motors and brushless DC motors. Digital customization is also possible with the brushless DC motor.

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Introduction to the mechanism of the low-pulse liquid pump FP400 series. You can see the five-diaphragm system and the movement of the valves.

Introduction to the FP400 series mechanism *The FP150 series has the same mechanism.

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Maintenance procedure video for low pulsation liquid pumps FP150 and FP400 series.

Maintenance can be performed by the users themselves using general-purpose tools.

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High-output type, pulsation control design diaphragm liquid pump, ideal for inkjet printers, high-pressure cleaning systems, etc., with corrosion-resistant components also available.

- High discharge design, maximum allowable discharge pressure 0.6 MPa - Reduced pulsation in liquid delivery - Long lifespan design - Excellent linearity - Self-sustaining - Transfer of sensitive liquids - Abundant wetted materials Significantly reduces pulsation using five diaphragms, controls flow rate with an external signal to a brushless DC motor, and demonstrates a linear flow curve based on the control signal. It offers extensive customization for users' technical challenges and various optional parts are available.

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Double head type of NF60

- Self-sustaining - Maintenance-free, contamination-free - Abundant wetted materials - It is possible to increase flow rate by parallel connection. - Two flow paths can be supplied with one motor. Basic flow rate: 600 ml/min x 2 Suction lift: 3 mWg Discharge lift: 10 mWg

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NF100 type double head specification pulsation-reducing liquid pump

- Self-sustaining - Maintenance-free, contamination-free - Abundant wetted material options - NSF certified components can be selected optionally. Basic flow rate: 1300 ml/min x 2 Suction lift: 3 mWg Discharge lift: 10 mWg

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High discharge type of NF100 type, maximum allowable discharge pressure 0.6 MPa.

- Self-sustaining - Maintenance-free, contamination-free - Abundant wetted material options - An integrated pressure regulating valve is also available as an option. - NSF-certified materials can be selected as an option. Basic flow rate: 1300 ml/min Suction lift: 3 mWg Discharge lift: 60 mWg

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Compact liquid pump with a flow rate of 1200 ml/min.

- Self-sustaining - Maintenance-free, contamination-free - Abundant wetted material options - An integrated pressure regulating valve is also available as an option. - NSF-certified materials can be selected as an option. Basic flow rate: 1200 ml/min Suction lift: 3 mWg Discharge lift: 10 mWg

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Bestseller, a compact liquid pump with a flow rate of 600 ml/min.

- Self-sustaining - Maintenance-free, contamination-free - Abundant wetted materials Basic flow rate: 600 ml/min Suction lift: 3 mWg Discharge lift: 10 mWg

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High discharge liquid pump with a maximum allowable discharge pressure of 0.6 MPa (60 mWg)

High discharge liquid pump with a maximum allowable discharge pressure of 0.6 MPa (60 mWg) It can be used for liquid transfer in high pressure loss resistance flow paths, high-pressure cleaning, and mist generation through nozzles or orifices. - Flow rate adjustment is possible with brushless motor control. - Self-priming - Abundant wetted material options (EPDM / PTFE) - Maintenance-free, contamination-free Basic flow rate: 650 ml/min Maximum allowable discharge pressure: 0.6 MPa (6 bar / 6 mWg) Suction lift: 3 mWg

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A compact liquid pump with a flow rate of 3000 ml/min.

- Self-sustaining - Maintenance-free, contamination-free - Abundant wetted materials - An integrated pressure regulating valve is also available as an option. - NSF certified materials can be selected as an option. Basic flow rate: 3000 ml/min Suction lift: 3 mWg Discharge lift: 10 mWg

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High discharge type of NF300 type, maximum allowable discharge pressure 0.6 MPa.

- Self-sustaining - Maintenance-free, contamination-free - Abundant wetted material options - An integrated pressure adjustment valve is also available as an option. - NSF-certified materials can be selected as an option. Basic flow rate: 3000 ml/min Suction lift: 3 mWg Discharge lift: 60 mWg

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Durable, pulsation-reducing liquid pump FK100

- Pulsation-reducing liquid pump with new design - Variable flow control with brushless motor - Abundant wetted material options - Self-priming - NSF certified materials (optional) - AC motor specification (optional) Basic flow rate: 12.4 l/min (KP) / 11.5 l/min (KT) Suction lift: 4.5 mWg Discharge lift: 10 mWg

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Durable type, pulsation-reducing liquid pump FK100 with high discharge specifications, maximum allowable discharge pressure 0.6 MPa.

- Pulsation-reducing liquid pump with new design - Variable flow control with brushless motor - Abundant wetted materials - Self-sustaining - NSF certified materials (optional) - AC motor specification (optional) Basic flow rate: 12.4 l/min (KP) / 11.5 l/min (KT) Suction lift: 4.5 mWg Discharge lift: 60 mWg

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A damper that reduces pulsation during liquid transfer.

- Reduces pulsation by up to 97% - Accessories specifically for KNF liquid pumps - A wide range of wetted materials available according to liquid composition, just like the pumps - Maintenance-free - NSF certified materials (optional) FPD06: Flow rate up to 1200 ml/min, maximum allowable discharge pressure 0.2 MPa FPD10: Flow rate from 1300 ml/min, maximum allowable discharge pressure 0.2 MPa FPD1.06: Flow rate up to 1200 ml/min, maximum allowable discharge pressure 0.6 MPa FPD1.10: Flow rate from 1300 ml/min, maximum allowable discharge pressure 0.6 MPa

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Pressure regulating valve suitable for KNF products (gas, liquid)

- Compact and lightweight - Usable for both gas and liquid - Abundant connection materials for gas and liquid - Maintenance-free - NSF certified materials (optional) Pressure setting types: FDV30 / FDV1.30 / FDV300 / FDV1.300 Manual pressure setting types: FDV31 / FDV1.31 / FDV301 / FDV1.301

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The smallest liquid delivery pump in KNF.

- Self-sustaining - Maintenance-free, contamination-free - Abundant wetted material options Basic flow rate: 70 ml/min (DC-M) / 40 ml/min (DCB / DCB-4) Suction lift: 3 mWg Discharge lift: 10 mWg

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New Product FF20 Series

- Self-sufficient - Click-on type mount plate - Maintenance-free, contamination-free - Abundant wetted materials Basic flow rate: 230 ml/min (KP) / 210 ml/min (KT) Suction lift: 3.5 mWg (KP) / 2.5 mWg (KT) Discharge lift: 30 mWg

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Maximum allowable discharge pressure 1.6 MPa (160 mWg) - High-performance liquid pump with maximum performance from KNF, ideal for mist generation devices.

For detailed information, please search for "NF2.35" at the URL below. https://www.knf.co.jp/jp/

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Pulsation control design diaphragm liquid pump

- Reduced pulsation in liquid delivery - Long lifespan design - Excellent linearity - Self-sustaining - Transfer of sensitive liquids - Abundant wetted materials Basic flow rate: 1.5 l/min (KP) / 1.3 l/min (KT) Suction lift: 2.7 mH2O (KP) / 2.5 mH2O (KT) Discharge lift: 20 mH2O

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Explanation of the mechanism and features of the KNF diaphragm pump.

- Oil-free - Contamination-free - Maintenance-free - Corrosion resistance - Motor variation - Modular system - Pump customization (project pump)

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Pulsation-reducing liquid pump, a diaphragm liquid pump that significantly reduces pulsation generated during pump suction and discharge.

We have reviewed the design of the pump itself as a liquid pump for pulsation reduction measures. Traditionally, pulsation reduction was achieved using dampers, but we have significantly suppressed pulsation with the pump itself. - FP70 Series We have integrated the pulsation reduction damper with the pump. - FP150 / FP400 / FK1100 Series We have increased the number of diaphragms to a maximum of five, allowing for the cancellation of pulsation within the pump. - FP1.150 / FP1.400 / FK1.1100 Series We have increased the number of diaphragms to a maximum of five, allowing for the cancellation of pulsation within the pump. Additionally, we have improved the maximum allowable discharge pressure to 6 bar (0.6 MPa), achieving smooth liquid transfer even under challenging pressure conditions.

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Pulsation Reduction Gentle Flow Diaphragm Liquid Pump

- The pulsation reduction feature allows for the transfer of liquids with minimal pulsation. - Due to the reduced pulsation, pressure loss in the tubing can be minimized. - It enables the transfer of liquids with fewer air bubbles. - It can reduce the optional parts for pulsation reduction measures. - Equipped with a newly developed valve, it can achieve self-priming suction even at lower motor speeds. - Flow rate adjustment is possible through brushless motor control. - Materials with NFS certification are also available. Basic flow rate: 700 ml/min Diaphragm material: EPDM / PTFE

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Fukuda Corporation has been pursuing leak detection for 60 years and is dedicated to advancing the future of leak testing. 【 Supporting Various Leak Tests: Air Leak Test / Gas Leak Test (Hydrogen Gas, Helium Gas) 】 We develop, manufacture, and sell leak testing equipment to inspect airtightness and sealing performance. We will propose suitable testers and devices for each inspection target. 【 Target Industries and Examples of Inspection Targets 】 - Automotive Industry: Engines, FC components, valves and piping, various parts - Electronic Components Industry: Smartphones, keyless switches, various small sensors - Pharmaceuticals / Food / Cosmetics Industry: Bottle containers, syringes, vials, eye drop containers, pillow packaging, PTP packaging We will propose the most suitable leak testers for each industry. 【 ISO Certification 】JIS Q 9001:2015 (ISO 9001:2015)

This is a collection of links to Fukuda's technical columns. It covers various topics related to leak tests and more... Please check the related links for more information.

In civil engineering sites such as mountainous areas and construction sites, it may be necessary to use wooden boards on slopes or inclined access roads. Hyper CLT boards are civil engineering materials utilizing wood CLT, which can be laid not only on flat ground but also on sloped terrain. They can be used for temporary roads, access routes, heavy machinery entry paths, and measures against muddy conditions, creating a driving environment that takes advantage of the unique surface characteristics of wood. The 5×10 board weighs approximately 230 kg, and the 5×20 board weighs about 460 kg, making them lightweight and easy to install and remove even with small machinery, which is a notable feature for maneuverability in narrow sites. This wooden board is registered as a technology under the Ministry of Land, Infrastructure, Transport and Tourism's NETIS system as "TH-250021-A," and can also be utilized for safety measures and innovative ideas in public works.

Metal cracks are one of the concerns in equipment maintenance operations. Repairs using conventional welding methods can alter the base material around the crack due to heat, leading to residual stress and deformation, which always carries the risk of "crack recurrence" or "secondary damage." Hinode Waterworks Equipment Co., Ltd.'s "Mechanical Stitching Method" is a new technique that allows for the repair of metal cracks without applying heat. By using special bolts and reinforcement plates, the crack is physically removed without affecting the base material with heat. Repairs can be performed even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. For more details, please contact us or download the catalog.

● The production time for cast prototypes can be shortened! Since model making is not required, the production time for prototypes, which previously took about a month, can be significantly reduced. ● Model costs can be reduced! By directly producing sand molds from 3D data, there is no need for model production costs. If changes to the model are necessary, they can be addressed by modifying the 3D data. ● Similar products with different shapes and dimensions can be prototyped simultaneously! Different products, such as similar shapes or varying dimensions, can be molded at the same time in one molding process. This allows for the verification of multiple types in a short period.