Does the Quick coupling plug with hose end, NITTO KOHKI HI CUPLA, carbon steel require any special installation to ensure the medium flows from the socket to the plug?

Quick coupling plug with hose end, NITTO KOHKI HI CUPLA, carbon steel does require correct orientation to ensure the medium flows from the socket to the plug. The HI CUPLA plug in this series is a plug without a valve, so flow direction matters: the socket must be the source side and the plug the downstream side. No special tools or modifications are needed, but you must: - Connect so the medium enters from the socket toward the plug (socket â plug). - Ensure hose size and working pressure match specifications (up to 15 bar) and that flow capacity meets your requirement (e.g., 4000 l/min for 1â³ at 5 bar). - Verify secure hose end attachment and leak-free connections to maintain flow and safety. - Avoid connecting the plug as the supply-side if a closed or valve-equipped socket is not used, since the plug alone will not permit flow if the direction is reversed. Following these steps ensures proper flow and avoids operational issues.

Can Quick coupling plug with hose end, NITTO KOHKI HI CUPLA, carbon steel be used with other fluids besides compressed air?

Quick coupling plug with hose end, NITTO KOHKI HI CUPLA, carbon steel is primarily designed for compressed air and pneumatic tool connections. Its materials and construction (carbon steel, no valve in the plug) are optimized for air at the stated working pressure (15 bar) and specified flow rates; the note that medium must flow from socket to plug indicates it is not intended for bidirectional sealing of other fluids. Use with other gases or non-corrosive, non-abrasive inert gases may be technically possible but requires verification for chemical compatibility, pressure/temperature limits, leakage and safety. Use with liquids, oils, aggressive chemicals or flammable fluids is not recommended without manufacturer approval and appropriate seals-risking corrosion, leakage or failure. For any alternative fluid, consult Nitto Kohki technical support or datasheets for confirmation.

Is the Quick coupling plug with hose end, NITTO KOHKI HI CUPLA, carbon steel compatible with high-vibration pneumatic tools?

Yes. The Quick coupling plug with hose end, NITTO KOHKI HI CUPLA, carbon steel is compatible with highâvibration pneumatic tools. The product description specifically highlights excellent durability and vibration resistance, and its carbon steel construction provides strength and fatigue resistance under dynamic loads. With a working pressure of 15 bar and substantial flow rates (up to 4000 l/min for 1â³ at 5 bar), it supports demanding pneumatic tool operation. Ensure correct sizing to match tool and hose diameters and heed the note that the medium must flow from the socket to the plug to maintain proper function and sealing under vibration.

Plug quick coupling with fitting for hose, NITTO KOHKI HI CUPLA, steel carbon

All products, General-purpose low-pressure quick couplings/

Additional information

Material	CS – steel (cast iron)

Plug without valve Nitto Kohki series HI CUPLA with fitting for hose of excellent durability and resistance to vibration. intended for connection pneumatic tools with installations air. Material: steel carbon. Working pressure: 15 bar. flow capacity: 4000 l/min (1″), 3200 l/min (3/4″), 2600 l/min (1/2″), 1600 l/min (3/8″), 1000 l/min (1/4″) at a pressure of 5 bar. Note: the medium must flow from the socket to the plug.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
NK-20PH-S	Quick coupling plug HI CUPLA, for hose 1/4", chrome-plated steel	-	15	In stock	Enquiry
NK-30PH-S	Quick coupling plug HI CUPLA, for hose 3/8", chrome-plated steel	-	15	In stock	Enquiry
NK-400PH-S	Quick coupling plug HI CUPLA, for hose 1/2", chrome-plated steel	-	15	In stock	Enquiry
NK-40PH-S	Quick coupling plug HI CUPLA, for hose 1/2", chrome-plated steel	-	15	In stock	Enquiry
NK-600PH-S	Quick coupling plug HI CUPLA, for hose 3/4", chrome-plated steel	-	15	In stock	Enquiry
NK-800PH-S	Quick coupling plug HI CUPLA, for hose 1", chrome-plated steel	-	15	In stock	Enquiry

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Plug without valve Nitto Kohki series HI CUPLA with fitting for hose of excellent durability and resistance to vibration. intended for connection pneumatic tools with installations air. Material: steel carbon. Working pressure: 15 bar. flow capacity: 4000 l/min (1″), 3200 l/min (3/4″), 2600 l/min (1/2″), 1600 l/min (3/8″), 1000 l/min (1/4″) at a pressure of 5 bar. Note: the medium must flow from the socket to the plug.