Quick coupling socket with valve DN7.8, with hose end, series 1625KA – belongs to the premium class with increased performance and features an impact-resistant plastic locking sleeve. Designed primarily for compressed air. The socket body is made of hardened steel through the process of carbonitriding in a salt bath QPQ, enhancing resistance to wear and corrosion (black color). Operated with one hand. Safe operation of the coupling can only be guaranteed when used with plugs made of hardened steel (series 25KA). Performance: 2020 l/min (Pe = 6 bar, Δp=0.5 bar – air), 43.3 l/min (Δp=1 bar, Kv=2.6 – water). Working pressure: 35 bar. Material: hardened steel QPQ (socket body), PA6 + TPE (sleeve), nickel-plated brass (connection part), stainless steel (spring, balls, and ring). Sealing: NBR. Operating temperature: from -20°C to +40°C.