Coupling×長堀工業 - List of Manufacturers, Suppliers, Companies and Products

Coupling Product List

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Single-way open/close low-pressure quick coupling AL type (standard type)

Single-way open/close low-pressure quick coupling AL type (standard type)

Single Road Open/Close Low Pressure Quick Coupling AL Type (Standard Type)

Low-pressure, general-purpose quick couplings widely used for air piping and air tool connections within factories. 【Features】 - Various types of sockets and plugs available for hoses and threads. - 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 heat-treated for high wear resistance. - The valve mechanism allows for automatic opening and closing through the socket side's attachment and detachment operation.

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Quick Coupling AL Type Super 10 (Lightweight Type)

Quick Coupling AL Type Super 10 (Lightweight Type)

Single-path open/close type one-touch low-pressure quick coupling AL type super 10 (lightweight type) (fitting)

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 very smooth socket and plug disengagement ○ When used in air piping, leakage is extremely low, extending the compressor's lifespan and saving electricity ○ Both socket and plug are compatible regardless of size or shape ○ Fluid can flow from either the socket or the plug ○ Main body material - Socket: Brass (BSBM) chrome-plated - Plug: Steel (chrome-plated) ○ Mounting shapes - Male thread (F), female thread (M), hose nipple (H), with nut (B)

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Medium and low pressure quick coupling, dual port open type, TL type.

Medium and low pressure quick coupling, dual port open type, TL type.

Medium and low pressure quick coupling, dual open type, TL type.

This is a two-way open (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 the low pressure loss, it is suitable for piping connections of 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 free combinations. ■ Both the socket and the plug have a structure without a valve, so the fluid flows out to the outside. ■ Once set, the fluid is completely sealed by an O-ring. ■ There is no pressure loss, and the fluid flows smoothly through the coupling. 【For details on the TL type coupling, please refer to the download.】

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High-pressure, stainless steel double-acting quick coupling, SH type.

High-pressure, stainless steel double-acting quick coupling, SH type.

High-pressure stainless steel double-acting quick coupling, SH type.

This is a quick coupling with automatic valves on both the socket and plug, designed for dual-path opening and closing. 【Features】 ■ As a dual-path 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. ■ Equipped with a standard 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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Medium and low pressure, dual path open-close quick coupling S.P. type

Medium and low pressure, dual path open-close quick coupling S.P. type

Medium and low pressure, dual-path open/close quick coupling S.P. type

This is a dual-path open/close quick coupling equipped with automatic valves on both the socket and plug. 【Features】 ■ Since it is a dual-path open/close 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 provides a complete seal, preventing any external leakage.

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Coupling Special Product Case Studies (Leak Testing Edition)

Coupling Special Product Case Studies (Leak Testing Edition)

Coupling Special Product Examples (Leakage Test Edition)

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 and custom couplings (fittings) from just one piece ◆ 【Production Examples】 □ Automotive manufacturer engine factory: Engine running tests Previously: Hoses were connected and hose bands tightened, then removed again after the test... Now: With the adoption of couplings, connection and disconnection can be done with one touch, significantly reducing labor time. Moreover, by using a rotary adapter, hose handling has become smooth! □ Leak testing of copper pipe piping for eco-cute systems Previously: Leak testing was done using a negative pressure method, which involved adhering rubber gaskets for testing... Now: The testing method has changed to a pressurized system, and with increased pressure, safe work can now be performed using couplings! □ Engine leak tests at construction machinery manufacturer engine factory Previously: A nut fixture was tightened onto an M18 male thread workpiece to create a seal... Now: With two claws, the male thread's screw theft area can be clamped with one touch, simultaneously sealing the end face!

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Custom Coupling: Mold Type Lever-Style One-Touch Coupling

Custom Coupling: Mold Type Lever-Style One-Touch Coupling

Custom Coupling: Mold Type Lever-Style Quick Coupling

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 using the link below ■ □ For detailed specifications discussions, please refer to the downloadable materials □

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Custom Coupling for High-Pressure Washers

Custom Coupling for High-Pressure Washers

Custom coupling for high-pressure washers.

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 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 ■ □ For detailed specifications discussions, please refer to the downloadable materials □

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Custom Couplings for Shipbuilding-related Companies

Custom Couplings for Shipbuilding-related Companies

Custom Couplings for Shipbuilding-related Companies

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 Studies】 - Made of SUS303 to prevent rust, as iron tends to rust easily. - Equipped with a locking mechanism. - Proven track record with 23SH, 24SH, and 24SM. ■ For more details or inquiries, please contact us through the link below ■ □ For detailed specifications, please refer to the downloadable materials □

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High Flow & High Efficiency One-Touch Coupling CAF Series

High Flow & High Efficiency One-Touch Coupling CAF Series

High Flow & High Efficiency One-Touch Coupling CAF Series

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. Innovative design and calibration of parts, with a newly developed internal structure, significantly reduces pressure loss = achieves high flow rates. ■ General-purpose 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 unpleasant recoil and noise. ■ Automatic locking mechanism without the need for rotation in the slow section (CAFW series). A new locking mechanism that improves work efficiency. ■ For other functions and details, please download the catalog or contact us.

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Quick Coupling SPECIAL

Quick Coupling SPECIAL

There are safety caps and items for high-pressure washers and car wash machines.

The Quick Coupling SPECIAL air high flow type features a full-through ball valve built-in to reduce pressure loss inside the coupling and achieve increased flow rate. For more details, please contact us or download the catalog.

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Piping fittings, special, custom coupling

Piping fittings, special, custom coupling

We will meet various needs in factory piping!

We would like to introduce a custom coupling (joint) that can be manufactured even from a single prototype. 【Actual Usage Examples】 ★ Hydraulic and rolling equipment piping in steel mills ★ Cooling water for waste incinerators ★ Special mechanism to eliminate misconnection of couplings of the same size but different shapes, preventing incorrect fluid supply (for various types of plants) ■ For more details, please contact us via the link below 【Contact Us】 ■ □ For detailed specifications discussions, please refer to the downloadable materials □

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High-pressure washer piping fittings, special, custom couplings

High-pressure washer piping fittings, special, custom couplings

Pressure-resistant up to 15MPa! Introduction of examples of special custom fittings with a valve-less design.

We would like to introduce a custom coupling (joint) that can be manufactured even from a single prototype. The main material is stainless steel and it comes with a sleeve block. We have implemented measures to reduce the load on the plug. ■ For details and inquiries, please contact us using the link below【Contact】■ □ For detailed specifications, please refer to the downloadable materials □

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Stainless steel (SUS316) quick coupling for medium and low pressure

Stainless steel (SUS316) quick coupling for medium and low pressure

Made of SUS316, it exhibits high resistance to pitting and high corrosion resistance against solutions containing chloride ions.

This is a two-way open (through) type quick coupling that does not have a valve mechanism for both the socket and the plug. It has a large flow rate, low pressure loss, and can accommodate high-viscosity fluids. The main body is made of SUS316, which has excellent resistance to pitting corrosion and demonstrates superior corrosion resistance against solutions containing chloride ions. 【Four types of sockets and plugs to choose from】 Socket Stainless Steel (SUS316) fitting SM (male thread type) Socket Stainless Steel (SUS316) fitting SF (female thread type) Plug Stainless Steel (SUS316) fitting PM (male thread type) Plug Stainless Steel (SUS316) fitting PF (female thread type) *All products are made to order. ■ For details such as sizes, please refer to the catalog.

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Low pressure quick coupling AT type new one-touch

Low pressure quick coupling AT type new one-touch

Single-sided open/close low-pressure quick coupling AT type new one-touch (plastic sleeve)

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 method 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: Female thread (F), male thread (M), hose nipple (H), with nut (A, B)

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