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.

Socket quick coupling with a male BSP threadT with valve, NITTO KOHKI HI CUPLA, brass

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

Additional information

Material	B – brass (bronze)

Socket with valve Nitto Kohki series HI CUPLA with thread external BSPT o excellent durability and resistance to vibration. intended for installation water. Material: brass. Working pressure: 10 bar. Operating temperature: od -20°C up to +80°C (NBR). 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-20SM-B	Quick coupling socket HI CUPLA, 1/4" BSPT male, brass	-	10	In stock	Enquiry
NK-30SM-B	Quick coupling socket HI CUPLA, 3/8" BSPT male, brass	-	10	In stock	Enquiry
NK-400SM-B	Quick coupling socket HI CUPLA, 1/2" BSPT male, brass	-	10	In stock	Enquiry
NK-40SM-B	Quick coupling socket HI CUPLA, 1/2" BSPT male, brass	-	10	In stock	Enquiry
NK-600SM-B	Quick coupling socket HI CUPLA, 3/4" BSPT male, brass	-	10	In stock	Enquiry
NK-800SM-B	Quick coupling socket HI CUPLA, 1" BSPT male, brass	-	10	In stock	Enquiry

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Socket with valve Nitto Kohki series HI CUPLA with thread external BSPT o excellent durability and resistance to vibration. intended for installation water. Material: brass. Working pressure: 10 bar. Operating temperature: od -20°C up to +80°C (NBR). 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.