Rotary quick coupling socket with shut-off valve, EWO series EW-411, SAFETY, DN 7.4 with hose end. One-sided shut-off quick coupling for air, disconnectable without pressure, equipped with a push-button locking mechanism. Venting the quick coupling before disconnection prevents the recoil effect when the plug is disconnected. This ensures operator safety in accordance with ISO 4414 and EN983. The operation of the quick coupling is simple: 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. The ability to rotate the socket allows for easy positioning of the button in a convenient location after being screwed to the installation, even under pressure. Plugs with a profile compliant with the popular EURO DN7.2 standard made of steel (not brass) are recommended for the socket. Upon request, sockets can be made in other colors: black, red, gray, yellow, green, or entirely made of stainless steel. Material: – socket body: outlet – galvanized steel, middle part – anodized aluminum, inlet part – nickel-plated brass; – springs and balls made of stainless steel. Performance: 1960 l/min (Pe = 6 bar, Δp = 1 bar, air). Working pressure: 16 bar (minimum 1 bar). Operating temperature: from -20°C to +100°C. Sealing: NBR.