Can the Quick coupling plug with GW BSPT, NITTO KOHKI HI CUPLA, brass be used in water systems at 10 bar and will it maintain vibration resistance and durability?

Yes. The Quick coupling plug with GW BSPT, NITTO KOHKI HI CUPLA, brass is specified for water installations, constructed of brass, and has a working pressure rating of 10 bar.so it can be used in water systems at that pressure. The product description also states it features excellent durability and vibration resistance, so when installed and used as intended it should maintain those properties. Two important conditions to meet: - Flow direction must be from the socket to the plug, as noted in the specification. - Observe the stated flow rates (depending on size) and installation best practices (proper thread sealing, correct mating socket, and secure mounting) to avoid issues that could affect durability or vibration performance. If your application involves temperatures, aggressive fluids, or cyclic pressure/vibration beyond typical water installations, verify compatibility with Nitto Kohki or test under expected field conditions.

Is the Quick coupling plug with GW BSPT, NITTO KOHKI HI CUPLA, brass suitable for water systems where flow must go from socket to plug?

Yes. Quick coupling plug with GW BSPT, NITTO KOHKI HI CUPLA, brass is suitable for water systems where flow must go from socket to plug. It is designed for water installations, made of brass, rated to 10 bar working pressure, and provides the stated flow rates at 5 bar. Note the product requires the medium to flow from socket to plug and has no valve, so ensure system orientation and connections match this flow direction.

Does the Quick coupling plug with GW BSPT, NITTO KOHKI HI CUPLA, brass require flow direction from socket to plug?

Yes. The Quick coupling plug with GW BSPT, NITTO KOHKI HI CUPLA, brass requires the medium to flow from the socket to the plug. The product is a plug without a valve, designed for water installations, so correct flow direction (socket â plug) is necessary for proper operation and to match the manufacturer's note.

Quick coupling plug with GW BSPT, NITTO KOHKI HI CUPLA, brass

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

Additional information

Material	B – brass (bronze)

Nitto Kohki HI CUPLA series plug without valve with internal BSPT thread, featuring excellent durability and vibration resistance. Designed for water installations. Material: brass. Working pressure: 10 bar. Flow rate: 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-20PF-B	HI CUPLA quick coupling plug, 1/4" BSPT thread, brass	-	10	In stock	Enquiry
NK-30PF-B	HI CUPLA quick coupling plug, BSPT 3/8" thread, brass	-	10	In stock	Enquiry
NK-400PF-B	HI CUPLA quick coupling plug, BSPT 1/2" thread, brass	-	10	In stock	Enquiry
NK-40PF-B	HI CUPLA quick coupling plug, 1/2" BSPT thread, brass	-	10	In stock	Enquiry
NK-600PF-B	HI CUPLA quick coupling plug, BSPT 3/4" thread, brass	-	10	In stock	Enquiry
NK-800PF-B	HI CUPLA quick coupling plug, BSPT 1" thread, brass	-	10	In stock	Enquiry

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Nitto Kohki HI CUPLA series plug without valve with internal BSPT thread, featuring excellent durability and vibration resistance. Designed for water installations. Material: brass. Working pressure: 10 bar. Flow rate: 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.