ETC 3680 Safety Valve 3/4″ x 1″ 40 PSI – 4047

The ETC 3680 is a 3/4″ × 1″ safety valve rated for 40 PSI, identified by part number 4047. Safety valves of this type are used in compressed-gas and fluid-pressure systems to prevent over-pressurization by opening when system pressure exceeds the set threshold. This valve is typically found in medical gas delivery systems, ventilator circuits, and anesthesia equipment where pressure regulation and system protection are critical.