Can the NITTO KOHKI HI CUPLA Carbon Steel Quick Coupling Socket with Hose End and Valve withstand continuous use at 15 bar and temperatures near +80°C?

Yes — the NITTO KOHKI HI CUPLA Carbon Steel Quick Coupling Socket with Hose End and Valve is rated for continuous use at a working pressure up to 15 bar and temperatures up to +80°C (with NBR seals). Its carbon steel construction and vibration-resistant design support durable performance in intensive industrial applications. Ensure correct installation and that airflow is always directed from the socket to the plug to maintain optimal functionality and sealing; long-term reliability also depends on operating conditions (contaminants, cyclic thermal/mechanical stress) and appropriate maintenance.

Is the NITTO KOHKI HI CUPLA Carbon Steel Quick Coupling Socket with Hose End and Valve compatible with other standard pneumatic plugs and fittings?

The NITTO KOHKI HI CUPLA Carbon Steel Quick Coupling Socket with Hose End and Valve is designed to mate with the HI CUPLA series plugs and standard pneumatic plugs that follow compatible HI CUPLA dimensions and connection principles. Because it is a series-specific socket, full compatibility requires the mating plug to match the HI CUPLA coupling size and flow direction (air must flow from socket to plug). In practice this means: - Compatible: other HI CUPLA plugs of the same nominal size (1″, 3/4″, 1/2″, 3/8″, 1/4″) and any plug made to HI CUPLA specifications. - Potentially incompatible: generic or proprietary quick‑connect plugs that do not follow HI CUPLA geometry, sealing profile, or valve arrangement, even if they share nominal thread or bore size. - Important limits: ensure matching size, pressure rating (up to 15 bar), and correct flow direction; check sealing material (NBR) and operating temperature range (-20°C to +80°C) for application compatibility. If you need guaranteed interchangeability, verify part numbers/specs or use plugs explicitly specified as HI CUPLA‑compatible.

NITTO KOHKI HI CUPLA Carbon Steel Quick Coupling Socket with Hose End and Valve

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

Additional information

Material	CS – steel (cast iron)

The Nitto Kohki HI CUPLA series socket with hose end is a robust and reliable solution for demanding pneumatic applications, engineered to deliver outstanding durability and resistance to vibrations. Manufactured from high-quality carbon steel, it ensures long-lasting performance even in intensive industrial environments. Designed specifically for connecting pneumatic tools to air supply systems, it operates safely at a working pressure of up to 15 bar and within a wide temperature range from -20°C to +80°C (NBR). Its impressive flow capacity guarantees efficient air distribution: 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. For optimal functionality, the airflow must always be directed from the socket to the plug. This coupling solution combines precision engineering with ease of use, making it an excellent choice for professionals seeking reliability, safety, and maximum efficiency in their pneumatic systems.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
NK-20SH-S	HI CUPLA quick coupling socket, for 1/4" hose, chrome-plated steel	-	15	In stock	Enquiry
NK-30SH-S	HI CUPLA quick coupling socket, for 3/8" hose, chrome-plated steel	-	15	In stock	Enquiry
NK-400SH-S	HI CUPLA quick coupling socket, for 1/2" hose, chrome-plated steel	-	15	In stock	Enquiry
NK-40SH-S	HI CUPLA quick coupling socket, for 1/2" hose, chrome-plated steel	-	15	In stock	Enquiry
NK-600SH-S	HI CUPLA quick coupling socket, for 3/4" hose, chrome-plated steel	-	15	In stock	Enquiry
NK-800SH-S	HI CUPLA quick coupling socket, for 1" hose, chrome-plated steel	-	15	In stock	Enquiry

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The Nitto Kohki HI CUPLA series socket with hose end is a robust and reliable solution for demanding pneumatic applications, engineered to deliver outstanding durability and resistance to vibrations. Manufactured from high-quality carbon steel, it ensures long-lasting performance even in intensive industrial environments. Designed specifically for connecting pneumatic tools to air supply systems, it operates safely at a working pressure of up to 15 bar and within a wide temperature range from -20°C to +80°C (NBR). Its impressive flow capacity guarantees efficient air distribution: 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. For optimal functionality, the airflow must always be directed from the socket to the plug. This coupling solution combines precision engineering with ease of use, making it an excellent choice for professionals seeking reliability, safety, and maximum efficiency in their pneumatic systems.