長堀工業 List of Products and Services

This is a case study of special couplings and custom couplings from Nagahori Kogyo. We introduce custom couplings (joints) that can be manufactured even from a single prototype. 【Case Study】 - Adopts a helical shape with no liquid accumulation. - Main material: SUS316L (electropolished) - Seal material: FPM - Maximum operating pressure: 6.5 MPa ■ For more details or inquiries, please contact us using the link below ■ □ For detailed specifications discussions, please refer to the downloadable materials □

• Pipe Fittings

This is a case study of special couplings and custom couplings from Nagahori Kogyo. We introduce custom couplings (joints) that can be manufactured even from a single prototype. 【Case Study】 - Made of SUS303 to prevent rust, which is likely to occur with iron. - Equipped with a locking mechanism. - Proven results with 23SH, 24SH, and 24SM. ■ For more details or inquiries, please contact us via the link below【Contact】■ □ For detailed specifications discussions, please refer to the downloadable materials□

• Pipe Fittings

This is a case study of special couplings and custom couplings from Nagahori Industries. We introduce custom couplings (joints) that can be manufactured even from a single prototype. 【Case Study】 - Used in a medical supplies manufacturing factory - Main body material: SUS304 - Seal material: Silicone - Due to limited installation space, a sleeve outer diameter of Φ17 is used (standard is φ18) - Degreased product ■ For more details, please contact us via the link below 【Contact Us】 ■ □ For detailed specifications discussions, please refer to the downloadable materials □

• Pipe Fittings

This is a coupling that allows for simultaneous operation of multiple pipes with a single connection operation, enabling the flow of various fluids through the piping. 【Features】 - It can be operated, connected, and disconnected using cylinders such as hydraulic and pneumatic, making it compatible with automated lines. - It is equipped with automatic opening and closing valves in the socket and plug, ensuring no fluid leakage during disconnection. - By using CSPE type valves, it is designed to have low pressure loss.

• valve

This is a case study of special couplings and custom couplings from Nagahori Industry. We introduce custom couplings (joints) that can be manufactured even from a single prototype. 【Case Study】 - For cooling water of PET bottle molds - Main material: Brass (chrome-plated) - Seal material: NBR - Maximum operating pressure: 0.3 MPa ■ For more details or inquiries, please contact us via the link below ■ □ For detailed specifications discussions, please refer to the downloadable materials □

• Pipe Fittings

This is a case study of special couplings and custom couplings from Nagahori Industries. We introduce custom couplings (joints) that can be manufactured even from a single prototype. 【Case Study】 - For air piping with a purge mechanism - Gradually releases residual pressure in the hose on the plug side during disconnection, eliminating unpleasant noise and hose recoil phenomena. ■ For details and inquiries, please contact us using the link below【Contact Us】■ □ For detailed specifications discussions, please refer to the downloadable materials□

• Pipe Fittings

This is a case study of special couplings and custom couplings from Nagahori Industry. We introduce custom couplings (joints) that can be manufactured even from a single prototype. 【Case Study】 - Open both ways (no valve) - A special mechanism that allows attachment and detachment by pulling the sleeve and rotating it, without using a ball. - Difficult to disengage even when pulled. ■ For more details, please contact us via the link below 【Contact Us】 ■ □ For detailed specifications discussions, please refer to the downloadable materials □

• Pipe Fittings

This is a case study of special couplings and custom couplings from Nagahori Industry. We introduce custom couplings (joints) that can be manufactured even from a single prototype. 【Case Study】 - For high-pressure washers and car wash machines - Main material: SUS303 - Seal material: NBR - Maximum operating pressure: 9.0MPa ■ For more details, please contact us through the link below【Contact Us】■ □ For detailed specifications discussions, please refer to the downloadable materials□

• Pipe Fittings

Are you having trouble with airtight testing of complex work (pipes)? (Using hoses, hose bands, caps, etc.) Connect and disconnect with a one-touch coupling! ◆ We can manufacture special or custom couplings (fittings) from just one piece ◆ 【Production Examples】 □ Automotive manufacturer engine factory: Engine running tests Traditionally: Hoses were connected, hose bands tightened, and then disconnected after the test... Now: With the adoption of couplings, connections and disconnections can be done with one touch, significantly reducing labor. Moreover, using a rotary adapter allows for smooth hose handling! □ Leak testing of copper pipe piping for eco-cute systems Traditionally: Leak testing was done using negative pressure, with rubber gaskets being adhered for the test... Now: The testing method has changed to positive pressure, and with increased pressure, safe work can now be performed with couplings! □ Engine leak tests at construction machinery manufacturer engine factory Traditionally: A nut fixture was tightened onto M18 threaded work to seal it... Now: With two claws, the threaded section can be clamped with one touch, simultaneously sealing the end face!

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This is a quick coupling with automatic valves on both the socket and plug, designed for two-way opening and closing. 【Features】 - Being a two-way opening and closing type, it ensures that both the socket and plug achieve a complete seal the moment they are separated. - The main body is made of corrosion-resistant stainless steel SUS304, making it ideal for use in harsh environments such as steelmaking and onboard ships. - It comes standard with a locking mechanism to prevent accidental disconnection due to vibrations or impacts. - The valves of the socket and plug instantly adhere to the valve seat surface, closing the passage. - The valves of the socket and plug push against each other to open the passage, allowing fluid to flow. - To prevent leakage, a backup ring is used, and it is completely sealed with an O-ring. *Please use a dust cap when separating and leaving it unattended. 【For more details on the SH type coupling, please refer to the download.】

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High-pressure dual-path shut-off quick coupling equipped with automatic valves on both the socket and plug 【Features】 ○ The main body is made of special steel (chromoly steel) that is resistant to vibration and impact ○ It has been heat-treated, providing excellent wear resistance and tensile strength ○ Pressure loss is extremely low, making it particularly suitable for hydraulic equipment piping ○ The valves of the socket and plug instantly adhere to the valve seat surface, closing the passage ○ The valves of the socket and plug push against each other to open the passage, allowing fluid to flow ○ Backflow prevention is achieved with a backup ring. It can be completely sealed with an O-ring ○ Main body material: special steel (chromoly steel) with zinc plating ○ Mounting shape: male thread (F) for both socket and plug only

• Pipe Fittings

This is a quick coupling with automatic valves on both the socket and plug, designed for dual-path opening and closing. 【Features】 ■ Since it is a dual-path opening and closing type, both the socket and plug achieve a complete seal the moment they are separated. ■ The passage opens simultaneously with the connection, and closes simultaneously with the separation, resulting in minimal fluid loss and air contamination. ■ There is a wide variety of materials available for the main body, and valves, packing, and O-rings should be used according to the type of fluid. ■ The valves of the socket and plug adhere instantly to the valve seat, stopping the flow of fluid. Therefore, there is no fluid leakage. ■ The valves of the socket and plug push against each other to open the passage, allowing fluid to flow. ■ The O-ring inside the socket seals completely, preventing any external leakage.

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This is a through-type quick coupling that does not have a valve mechanism in either the socket or the plug. 【Features】 ■ Since it is a through-type, it has the largest flow rate and almost no flow resistance. ■ Due to low pressure loss, it is suitable for piping fittings for high-viscosity fluids, steam, and powders. ■ Depending on the connection target, there are options for male thread (M) connection, female thread (F) connection, and hose (H) connection, allowing for flexible combinations. ■ Both the socket and plug have no valve structure, so the fluid flows out to the outside. ■ Once set, the fluid is completely sealed with an O-ring. ■ There is no pressure loss, and the fluid flows smoothly through the coupling. 【For more details on the TL type coupling, please refer to the download.】

• Pipe Fittings

The new design achieves energy savings and high efficiency through its component configuration. By reducing flow loss, it meets the needs of various sites. *For details, please refer to the catalog download.

• valve

You can extract multiple branch air flows from a single pipe. 【Features】 ■ The coupling compatibility is designed to match the CAL type. ■ There is no vacuum resistance, both when standalone and when connected. ■ The main body can flexibly accommodate branching, and a rotary type that prevents hose twisting is also recommended.

• valve

Equipped with a highly confidential automatic opening and closing valve Quick coupling suitable for medium and low pressure applications in a wide range of vacuum uses 【Features】 ○ Excellent vacuum resistance, ensuring that fluid within the piping does not leak externally even during separation Exceptional vacuum resistance (1x10-3 mmHg) ○ Compatible with production lines for coolers and refrigerators ○ Two types of main body materials: brass and stainless steel (SUS304) ○ Fluid can flow from either the socket side or the plug side ○ (When placing an order) please inform us of the application, fluid, pressure, temperature, specifications, etc.

• Pipe Fittings

This is a case study of special couplings and custom couplings from Nagahori Industry. We introduce custom couplings (joints) that can be manufactured even from a single prototype. 【Case Study】 - For dental medical equipment - Main material: Brass (electroless nickel plating) - Seal material: NBR - Maximum operating pressure: 2.3 MPa ■ For more details or inquiries, please contact us through the link below ■ □ For detailed specifications discussions, please refer to the downloadable materials □

• Pipe Fittings

Adoption of special reinforced resin! Lightweight low-pressure single-side opening and closing quick coupling 【Features】 ○ Improved internal structure increases flow rate by 25% (compared to our conventional products) ○ Adoption of special reinforced resin achieves over 10% weight reduction (compared to our conventional products) ○ A clever modification to the sleeve structure significantly reduces disconnection during unexpected impacts ○ Side O-ring system allows for easy replacement of sealing materials, making it economical ○ Connection with CAL20 type plug is acceptable ○ Main body material: Steel (chrome-plated) & reinforced resin (POM) ○ Mounting shapes: Male thread (F), female thread (M), hose nipple (H), with nut (A, B)

• Pipe Fittings

Excellent operability with one-touch connection! Low-pressure quick coupling that can be connected with one hand 【Features】 ○ One-touch connection (with automatic opening and closing valve) ○ Lightweight design, ideal for hand tool connections ○ Excellent workability, with extremely smooth socket and plug engagement ○ When used in air piping, leakage is minimal, extending the compressor's lifespan and saving electricity ○ Compatibility of sockets and plugs regardless of size or shape ○ Fluid can flow from either the socket or the plug ○ Material of the main body - Socket: Brass (BSBM) chrome-plated - Plug: Steel (chrome-plated) ○ Mounting shapes - Female thread (F), male thread (M), hose nipple (H), with nut (B)

• Pipe Fittings

A straight L-shaped rotary quick coupling that allows multiple branch air outputs from a single pipe. 【Features】 ○ The compatibility of the coupling is designed to match the CAL type. ○ There is no vacuum resistance, both when standalone and when connected. ○ The main body can flexibly accommodate branching, and a rotary type that prevents hose twisting is also recommended. ○ Main body materials: ・Straight L type Main body: Aluminum Coupling: Steel (chrome-plated) ・Rotary type Main body: Brass (chrome-plated) Coupling: Steel (chrome-plated)

• valve

【Features】 ■ No need to slide the sleeve forward each time, enhancing work efficiency. ■ One-touch connection for excellent operability! ■ Simply plug it in to reduce connection time, significantly improving efficiency. ■ Optimal workability, revolutionary and very convenient for those who use it on-site. ■ O-ring uses a side O-ring method, easy to replace. ■ Compatible with general-purpose couplings. ■ The plug is compatible with the AL20 type for connection.

• valve

Low-pressure, general-purpose quick couplings widely used for air piping and air tool connections within factories. 【Features】 - Various types available for both sockets and plugs, including hose and threaded types. - Main body materials: Steel (chrome-plated), brass (BSBM), stainless steel (SUS303, SUS304). - Mounting shapes: Male thread (F), female thread (M), hose nipple (H), with nut (A, B). - The 20 and 40 types have good compatibility between sockets and plugs, making them very convenient. - Major components made of steel are hardened for strong wear resistance. - The valve mechanism allows for automatic opening and closing through the detachment operation on the socket side only.

• Pipe Fittings

It is ideal for hose piping for mold cooling water. 【Features】 ■ Traditionally, mold changes took a long time, but this has been remarkably improved, making the work easier. ■ The connection and disconnection of the mold cooling water hose can be done quickly. ■ It does not have vacuum resistance when used alone or when connected.

• valve

This is a case study of special couplings and custom couplings from Nagahori Industries. We introduce custom couplings (joints) that can be manufactured even from a single prototype. 【Case Study】 - To prevent incorrect connections of three types of gases (air, carbon dioxide, oxygen) for shipyards, the shapes of the plugs are different so that they are not interchangeable. - Double seal structure with packing + O-ring. ■ For more details, please contact us through the section below【Contact】■ □ For detailed specifications discussions, please refer to the downloadable materials□

• Pipe Fittings

High flow rate and high efficiency with a full-through structure! Safe and reliable, one-touch smooth connection with a one-touch coupling. ■□■ Features ■□■ ■ A full-through structure that dramatically reduces pressure loss and achieves high flow rates Innovating the design and calibration of parts with a newly developed internal structure Significantly reduces pressure loss = achieves high flow rates ■ Universal CAL plug and one-touch connection structure (CAF series) ■ A safe structure that smoothly purges residual pressure in the hose (CAFW series) Discharges residual pressure in the hose during disassembly, eliminating uncomfortable recoil and noise ■ Automatic locking mechanism without the need for slow part rotation (CAFW series) A new locking mechanism that improves work efficiency ■ For other functions and details, please download the catalog or contact us.

• valve