Can the Quick coupling plug with GZ BSPT, NITTO KOHKI HI CUPLA, brass be used in reverse flow installations (plug to socket)?

No . the Quick coupling plug with GZ BSPT, NITTO KOHKI HI CUPLA, brass is not suitable for reverse-flow installations (plug to socket). The product description explicitly states: "Note: the medium must flow from the socket to the plug." This model is a plug without a valve and is designed for correct operation and sealing only when flow direction is socket â plug. Using it in reverse can compromise sealing, performance and safety, and may lead to leaks or malfunction despite its brass construction, 10 bar rating and specified flow rates. Use a version designed for bidirectional or reverse flow if your system requires plugâsocket flow.

Can the Quick coupling plug with GZ BSPT, NITTO KOHKI HI CUPLA, brass be used in reverse flow installations (plug to socket)?

Quick coupling plug with GZ BSPT, NITTO KOHKI HI CUPLA, brass cannot be used in reverse flow installations (plug to socket). The product description explicitly states the medium must flow from the socket to the plug, so using it plugâsocket would violate design intent and may impair sealing, operation and safety. Use socketâplug flow only.

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

Yes. the Quick coupling plug with GZ BSPT, NITTO KOHKI HI CUPLA, brass requires the medium to flow from the socket to the plug. This model is a plug without a valve and the product note explicitly states the flow direction: medium must flow from socket to plug.

Quick coupling plug with GZ 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 external 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-20PM-B	HI CUPLA quick coupling plug, GZ BSPT 1/4", brass	-	10	In stock	Enquiry
NK-30PM-B	HI CUPLA quick coupling plug, GZ BSPT 3/8", brass	-	10	In stock	Enquiry
NK-400PM-B	HI CUPLA quick coupling plug, GZ BSPT 1/2", brass	-	10	In stock	Enquiry
NK-40PM-B	HI CUPLA quick coupling plug, GZ BSPT 1/2", brass	-	10	In stock	Enquiry
NK-600PM-B	HI CUPLA quick coupling plug, GZ BSPT 3/4", brass	-	10	In stock	Enquiry
NK-800PM-B	HI CUPLA quick coupling plug, GZ BSPT 1", brass	-	10	In stock	Enquiry

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Nitto Kohki HI CUPLA series plug without valve with external 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.