Is the Brass Quick Coupling Socket with BSPT Male Thread and Valve, NITTO KOHKI HI CUPLA rated for continuous use at 10 bar and -20°C to +80°C (NBR)?

Yes. The Brass Quick Coupling Socket with BSPT Male Thread and Valve, NITTO KOHKI HI CUPLA is rated for continuous use at a working pressure of up to 10 bar and an operating temperature range of -20°C to +80°C when fitted with NBR seals, according to the provided product description.

Does the Brass Quick Coupling Socket with BSPT Male Thread and Valve, NITTO KOHKI HI CUPLA require special maintenance to maintain vibration resistance and flow performance over time?

Brass Quick Coupling Socket with BSPT Male Thread and Valve, NITTO KOHKI HI CUPLA does not require unusually intensive or complex maintenance to preserve its vibration resistance and flow performance, thanks to its robust brass construction and vibration‑resistant design. However, to maintain peak performance over time, follow standard preventive care: - Regular inspection: check for visible wear, corrosion, loose fittings and proper seating of seals, especially after heavy vibration or shocks. - Seal maintenance: periodically inspect and replace NBR seals/O‑rings if hardened, cracked or leaking to preserve pressure rating and flow. - Cleaning: keep coupling faces and internal passages free of debris and scale to avoid flow restriction; flush with clean water when necessary. - Tightening and thread check: ensure BSPT male thread remains properly tightened and use correct sealing compound/tape; verify there’s no loosening from vibration. - Functional test: perform occasional pressure and leak tests (up to working pressure) and verify expected flow rates at operational pressure (e.g., 5 bar) if system performance appears degraded. - Lubrication: light, compatible lubricant on moving parts if recommended by supplier; avoid incompatible greases that degrade NBR. Following these routine maintenance steps will preserve the coupling’s vibration resistance and its advertised flow capacities (4000–1000 l/min depending on size) without special or exotic procedures.

Brass Quick Coupling Socket with BSPT Male Thread and Valve, NITTO KOHKI HI CUPLA

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

Additional information

Material	B – brass (bronze)

The Nitto Kohki HI CUPLA socket with external BSPT thread is a high‑performance solution engineered for demanding water installations, combining outstanding durability with exceptional resistance to vibrations. Manufactured from robust brass, it ensures long‑lasting reliability even in intensive operating conditions. With a working pressure of up to 10 bar and an operating temperature range from -20°C to +80°C (NBR), this coupling guarantees secure and efficient performance across a wide spectrum of applications. Its impressive flow capacity delivers 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″ connections at 5 bar, making it a versatile choice for both industrial and professional use. Designed with precision, the HI CUPLA socket ensures optimal flow direction from socket to plug, providing safe and reliable operation. This product is the perfect combination of Japanese engineering, durability, and efficiency, offering users a trusted coupling solution that enhances system performance while minimizing downtime.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
NK-20SM-B	HI CUPLA quick coupling socket, GZ BSPT 1/4", brass	-	10	In stock	Enquiry
NK-30SM-B	HI CUPLA quick coupling socket, GZ BSPT 3/8", brass	-	10	In stock	Enquiry
NK-400SM-B	HI CUPLA quick coupling socket, GZ BSPT 1/2", brass	-	10	In stock	Enquiry
NK-40SM-B	HI CUPLA quick coupling socket, GZ BSPT 1/2", brass	-	10	In stock	Enquiry
NK-600SM-B	HI CUPLA quick coupling socket, GZ BSPT 3/4", brass	-	10	In stock	Enquiry
NK-800SM-B	HI CUPLA quick coupling socket, GZ BSPT 1", brass	-	10	In stock	Enquiry

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The Nitto Kohki HI CUPLA socket with external BSPT thread is a high‑performance solution engineered for demanding water installations, combining outstanding durability with exceptional resistance to vibrations. Manufactured from robust brass, it ensures long‑lasting reliability even in intensive operating conditions. With a working pressure of up to 10 bar and an operating temperature range from -20°C to +80°C (NBR), this coupling guarantees secure and efficient performance across a wide spectrum of applications. Its impressive flow capacity delivers 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″ connections at 5 bar, making it a versatile choice for both industrial and professional use. Designed with precision, the HI CUPLA socket ensures optimal flow direction from socket to plug, providing safe and reliable operation. This product is the perfect combination of Japanese engineering, durability, and efficiency, offering users a trusted coupling solution that enhances system performance while minimizing downtime.