While the double diaphragm provides an extra layer of protection

replacement is the only way to restore full system performance

Its refractory chamber construction is vacuum-formed to precise tolerances

covering the standard operating range for medium to high-pressure commercial ductwork

ASCO 222184-011-D Coil 321894-709 While the double diaphragm providesThe ASCO 222184 011 D Coil is a premium, high power solenoid coil engineered for precise fluid and gas control in demanding industrial and commercial environments. This 24VDC replacement coil is built to deliver a robust output of 33 36. 2 Watts, making it an essential component for high pressure solenoid valves used in HVAC systems, air handling units, and process automation. As an authentic ASCO solenoid part, it functions as an electromechanical