Quick coupling socket with valve DN7.8, with external BSPT thread or internal BSP thread, series 1600KA – belongs to the premium class with increased performance, designed primarily for compressed air, especially where high efficiency is required in a small coupling size. The socket body is made of hardened steel through the process of carbonitriding in a salt bath QPQ, increasing 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 QPQ steel (socket body), nickel-plated brass (connection part and sleeve), stainless steel (spring, balls, and ring). Sealing: NBR. Operating temperature: from -20°C to +100°C.