Socket with shut-off valve quick coupling EWO series EW-411 SAFETY, DN7.4, with external thread or hose end. Air quick coupling disconnectable without pressure, equipped with a push-button locking mechanism. Compliance with ISO 4414 and EN983 standards. Disconnection occurs in two stages: the first press of the button vents the quick coupling with the plug secured. The second press releases the plug, which can be safely removed. Recommended plugs made of steel (not brass), with a profile compliant with the popular EURO DN7.2 standard. Material: – socket body: outlet – galvanized steel, middle part – anodized aluminum, inlet part – nickel-plated brass; – springs and balls made of stainless steel. Flow rate: 1800 l/min (Pe = 6 bar, Δp = 1 bar, air). Working pressure: 12 bar. Operating temperature: from -10°C to +90°C. Sealing: NBR.