Can the Quick coupling socket with GZ BSPT valve, NITTO KOHKI HI CUPLA, brass be used with fluids other than water within the specified temperature and pressure ranges?

Quick coupling socket with GZ BSPT valve, NITTO KOHKI HI CUPLA, brass is specified and designed for water installations; materials (brass body, NBR seals) and stated ratings (working pressure 10 bar, temperature -20Â°C to +80Â°C with NBR) reflect that intended use. Using it with other fluids is possible only if those fluids are chemically compatible with brass and NBR and if their viscosity, vapor pressure and safety properties do not exceed the stated flow/pressure/temperature limits. Before using with another fluid, verify: - Chemical compatibility of the fluid with brass and NBR (corrosion, swelling, degradation). - Fluid temperature stays within -20Â°C to +80Â°C (or use compatible seal material if higher/lower). - System pressure does not exceed 10 bar and dynamic conditions match flow ratings. - The note âmedium must flow from the socket to the plugâ is respected. - No safety, contamination or regulatory issues (toxic, flammable, reactive fluids may require specific couplings). If compatibility or safety is uncertain, consult Nitto Kohki technical support or select a coupling specified for the particular fluid and temperature/pressure conditions.

Is the Quick coupling socket with GZ BSPT valve, NITTO KOHKI HI CUPLA, brass suitable for potable water systems?

Quick coupling socket with GZ BSPT valve, NITTO KOHKI HI CUPLA, brass - based on the provided description, it is designed for water installations, made of brass, works at up to 10 bar and â20Â°C to +80Â°C (NBR), and offers high flow rates. However the description does not explicitly state potable/drinking-water suitability (e.g., compliance with NSF/WRAS/EN 1717 or food-grade material/certification). Brass can be used for potable water but may require specific lead content limits and certifications. Therefore, unless the manufacturer or datasheet explicitly certifies potable-water approval, you should not assume it is suitable for drinking-water systems; request confirmation of potable-water approvals/certificates from Nitto Kohki.

Does the Quick coupling socket with GZ BSPT valve, NITTO KOHKI HI CUPLA, brass require specific installation orientation for optimal flow?

Yes. the Quick coupling socket with GZ BSPT valve, NITTO KOHKI HI CUPLA, brass requires a specific installation orientation for correct flow. The manufacturerâs note states the medium must flow from the socket to the plug; install so fluid enters the socket side and exits through the connected plug. This orientation ensures the internal valve and seals function properly, preserves the rated flow rates (e.g. 4000 l/min for 1â³ at 5 bar), and maintains durability and vibration resistance in water installations. Also observe the specified working pressure (10 bar) and temperature range (â20Â°C to +80Â°C with NBR) and use compatible mating plugs with matching BSPT threads.

Quick coupling socket with GZ BSPT valve, NITTO KOHKI HI CUPLA, brass

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

Additional information

Material	B – brass (bronze)

Nitto Kohki HI CUPLA series socket with external BSPT thread, featuring excellent durability and vibration resistance. Designed for water installations. Material: brass. Working pressure: 10 bar. Operating temperature: from -20°C to +80°C (NBR). 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-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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Nitto Kohki HI CUPLA series socket with external BSPT thread, featuring excellent durability and vibration resistance. Designed for water installations. Material: brass. Working pressure: 10 bar. Operating temperature: from -20°C to +80°C (NBR). 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.