Is the Quick Coupling Socket with BSPT Male Valve, NITTO KOHKI HI CUPLA, Stainless Steel AISI 304 suitable for continuous use at 15 bar and -20°C to +80°C (NBR)?

Yes. The Quick Coupling Socket with BSPT Male Valve, NITTO KOHKI HI CUPLA, Stainless Steel AISI 304 is specified for continuous use up to a working pressure of 15 bar and an operating temperature range of -20°C to +80°C (NBR), so it is suitable for continuous service within those pressure and temperature limits. Its AISI 304 construction and designed flow directions further support reliable performance in pneumatic installations under those conditions.

Does the Quick Coupling Socket with BSPT Male Valve, NITTO KOHKI HI CUPLA, Stainless Steel AISI 304 require special maintenance when used with oils or solvents at its rated temperature and pressure?

Quick Coupling Socket with BSPT Male Valve, NITTO KOHKI HI CUPLA, Stainless Steel AISI 304: The socket is designed for pneumatic use with a rated pressure up to 15 bar and operating temperatures from -20°C to +80°C (NBR). When used with oils or solvents at those rated temperature and pressure limits, special maintenance is recommended: inspect seals (NBR) regularly for swelling, hardening or degradation caused by oils/solvents; replace seals with compatible materials if prolonged exposure occurs (consider FKM/Viton for greater chemical resistance); clean internal passages to remove residue or contamination that could impair sealing or flow; check for corrosion or deposit buildup despite AISI 304 stainless steel’s good resistance; verify proper lubrication only with manufacturer‑approved fluids to avoid seal damage. If oils/solvents are aggressive or temperatures approach limits, consult Nitto Kohki for suitability and consider alternative seal materials or materials of construction. Regular inspection intervals should be shortened under heavy or solvent exposure to ensure safe, reliable operation.

Quick Coupling Socket with BSPT Male Valve, NITTO KOHKI HI CUPLA, Stainless Steel AISI 304

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

Additional information

Material	SS – stainless steel

The Nitto Kohki HI CUPLA socket with external BSPT thread is a high‑performance solution engineered for reliable pneumatic connections in demanding environments. Manufactured from robust AISI 304 stainless steel, it ensures long‑lasting durability and outstanding resistance to vibration, making it ideal for professional air tool applications. With a working pressure of up to 15 bar and an operating temperature range from -20°C to +80°C (NBR), this coupling guarantees consistent performance under varying conditions. Its impressive flow capacity—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 5 bar—delivers optimal efficiency across multiple sizes, ensuring smooth and uninterrupted airflow. Designed with precision, the HI CUPLA socket requires the medium to flow from the socket to the plug, securing safe and efficient operation. This makes it a trusted choice for industries seeking reliability, performance, and ease of integration into air installations.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
NK-20SM-SS	HI CUPLA quick coupling socket, GZ BSPT 1/4", AISI 304	-	15	In stock	Enquiry
NK-30SM-SS	HI CUPLA quick coupling socket, GZ BSPT 3/8", AISI 304	-	15	In stock	Enquiry
NK-400SM-SS	HI CUPLA quick coupling socket, GZ BSPT 1/2", AISI 304	-	15	In stock	Enquiry
NK-40SM-SS	HI CUPLA quick coupling socket, GZ BSPT 1/2", AISI 304	-	15	In stock	Enquiry
NK-600SM-SS	HI CUPLA quick coupling socket, GZ BSPT 3/4", AISI 304	-	15	In stock	Enquiry
NK-800SM-SS	HI CUPLA quick coupling socket, GZ BSPT 1", AISI 304	-	15	In stock	Enquiry

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The Nitto Kohki HI CUPLA socket with external BSPT thread is a high‑performance solution engineered for reliable pneumatic connections in demanding environments. Manufactured from robust AISI 304 stainless steel, it ensures long‑lasting durability and outstanding resistance to vibration, making it ideal for professional air tool applications. With a working pressure of up to 15 bar and an operating temperature range from -20°C to +80°C (NBR), this coupling guarantees consistent performance under varying conditions. Its impressive flow capacity—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 5 bar—delivers optimal efficiency across multiple sizes, ensuring smooth and uninterrupted airflow. Designed with precision, the HI CUPLA socket requires the medium to flow from the socket to the plug, securing safe and efficient operation. This makes it a trusted choice for industries seeking reliability, performance, and ease of integration into air installations.