Does the Quick coupling socket with GZ BSPT valve, NITTO KOHKI HI CUPLA, carbon steel require flow to go from socket to plug only?

Quick coupling socket with GZ BSPT valve, NITTO KOHKI HI CUPLA, carbon steel . Yes. The product description explicitly states "the medium must flow from the socket to the plug," so the coupling is designed for flow in that direction only. Operating parameters (working pressure 15 bar, specified flow rates at 5 bar, temperature range â20Â°C to +80Â°C) assume socket-to-plug flow; reverse flow is not recommended.

Can the Quick coupling socket with GZ BSPT valve, NITTO KOHKI HI CUPLA, carbon steel be installed in systems where airflow direction reverses?

Quick coupling socket with GZ BSPT valve, NITTO KOHKI HI CUPLA, carbon steel cannot be used in systems where airflow direction reverses. Product description explicitly states the medium must flow from the socket to the plug; reverse flow would violate design intent, risk leakage or malfunction of the internal valve, and may compromise sealing and safety despite the socketâs durability and vibration resistance. Use a coupler rated for bidirectional flow or redesign the system to ensure consistent flow direction.

Is the Quick coupling socket with GZ BSPT valve, NITTO KOHKI HI CUPLA, carbon steel compatible with reverse airflow?

Quick coupling socket with GZ BSPT valve, NITTO KOHKI HI CUPLA, carbon steel is not compatible with reverse airflow. The product description explicitly states: "the medium must flow from the socket to the plug," which means flow is designed and rated in that direction only. Using reverse airflow can compromise sealing, durability and flow performance and may lead to leakage or failure. Use only in the specified flow direction to ensure safe operation within rated pressure (15 bar) and temperature (-20Â°C to +80Â°C).

Socket quick coupling with male thread BSPT with valve, NITTO KOHKI HI CUPLA, steel carbon

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

Additional information

Material	CS – steel (cast iron)

Socket with valve Nitto Kohki series HI CUPLA with a BSPT male thread of excellent durability and resistance to vibration. Intended for connecting pneumatic tools to an air installation. Material: steel carbon. Working pressure: 15 bar. Operating temperature: from -20°C 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-S	Quick coupling socket HI CUPLA, 1/4" BSPT male, chrome-plated steel	-	15	In stock	Enquiry
NK-30SM-S	Quick coupling socket HI CUPLA, 3/8" BSPT male, chrome-plated steel	-	15	In stock	Enquiry
NK-400SM-S	Quick coupling socket HI CUPLA, 1/2" BSPT male, chrome-plated steel	-	15	In stock	Enquiry
NK-40SM-S	Quick coupling socket HI CUPLA, 1/2" BSPT male, chrome-plated steel	-	15	In stock	Enquiry
NK-600SM-S	Quick coupling socket HI CUPLA, 3/4" BSPT male, chrome-plated steel	-	15	In stock	Enquiry
NK-800SM-S	Quick coupling socket HI CUPLA, 1" BSPT male, chrome-plated steel	-	15	In stock	Enquiry

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Socket with valve Nitto Kohki series HI CUPLA with a BSPT male thread of excellent durability and resistance to vibration. Intended for connecting pneumatic tools to an air installation. Material: steel carbon. Working pressure: 15 bar. Operating temperature: from -20°C 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.