Is the Quick Coupling Plug with Male BSPT Thread, NITTO KOHKI HI CUPLA, Brass suitable for continuous water flow at 10 bar?

Quick Coupling Plug with Male BSPT Thread, NITTO KOHKI HI CUPLA, Brass is suitable for continuous water flow at 10 bar within its specified limits. It is manufactured from high‑quality brass for durability and vibration resistance and has a maximum working pressure of 10 bar. For continuous operation you must ensure the medium flows from the socket to the plug (correct flow direction). Also note the rated flow capacities are given at 5 bar: 4000 l/min (1″), 3200 l/min (3/4″), 2600 l/min (1/2″), 1600 l/min (3/8″) and 1000 l/min (1/4″); at 10 bar flow rates will be higher but should remain within the plug’s mechanical limits. Ensure proper installation, compatible mating socket, and regular inspection for wear to maintain safe continuous service at 10 bar.

Can the Quick Coupling Plug with Male BSPT Thread, NITTO KOHKI HI CUPLA, Brass be used in vibrating environments without additional supports to prevent loosening?

Quick Coupling Plug with Male BSPT Thread, NITTO KOHKI HI CUPLA, Brass can be used in vibrating environments, but with important caveats. Its high‑quality brass construction and robust design provide good resistance to vibrations and ensure secure, stable connections under normal industrial conditions. The product description emphasizes durability and resistance to vibrations, a maximum working pressure of 10 bar, and substantial flow rates, which indicate it is built for demanding water installations. However, the description does not mention any built‑in anti‑vibration or locking features (such as locking nuts, safety clips, or vibration‑resistant seals) nor specific torque or retention specifications under sustained vibration. Therefore, while the coupling is suitable for environments with typical vibration levels, in high‑vibration or continuous shock conditions additional measures (thread locking compound, lock washers, safety clips, or mechanical supports/brackets) are recommended to prevent loosening and ensure long‑term reliability. Always follow application‑specific installation best practices and verify with the manufacturer for critical or extreme vibration applications.

Quick Coupling Plug with Male BSPT Thread, NITTO KOHKI HI CUPLA, Brass

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

Additional information

Material	B – brass (bronze)

The Nitto Kohki HI CUPLA series plug without valve, equipped with an external BSPT thread, is a reliable solution for demanding water installations where durability and resistance to vibrations are essential. Manufactured from high‑quality brass, it ensures long‑lasting performance even under intensive use. With a maximum working pressure of 10 bar, this plug delivers impressive flow rates tailored to different connection sizes: 4000 l/min for 1″, 3200 l/min for 3/4″, 2600 l/min for 1/2″, 1600 l/min for 3/8″, and 1000 l/min for 1/4″ at 5 bar. Its robust construction guarantees secure and stable connections, minimizing downtime and enhancing system efficiency. Designed specifically for water applications, it provides consistent performance in both industrial and professional environments. For optimal operation, the medium must flow from the socket to the plug, ensuring proper functionality and safety. This makes the HI CUPLA plug an excellent choice for users seeking a dependable, high‑capacity, and easy‑to‑integrate component that supports smooth workflows and maximizes productivity.

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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The Nitto Kohki HI CUPLA series plug without valve, equipped with an external BSPT thread, is a reliable solution for demanding water installations where durability and resistance to vibrations are essential. Manufactured from high‑quality brass, it ensures long‑lasting performance even under intensive use. With a maximum working pressure of 10 bar, this plug delivers impressive flow rates tailored to different connection sizes: 4000 l/min for 1″, 3200 l/min for 3/4″, 2600 l/min for 1/2″, 1600 l/min for 3/8″, and 1000 l/min for 1/4″ at 5 bar. Its robust construction guarantees secure and stable connections, minimizing downtime and enhancing system efficiency. Designed specifically for water applications, it provides consistent performance in both industrial and professional environments. For optimal operation, the medium must flow from the socket to the plug, ensuring proper functionality and safety. This makes the HI CUPLA plug an excellent choice for users seeking a dependable, high‑capacity, and easy‑to‑integrate component that supports smooth workflows and maximizes productivity.