EWC Controls PRD Regulating Damper Els PW 17895 normally closed circuit that breaks

normally closed circuit that breaks cleanly upon activation

If installed in a restricted area

the gas regulator flow capacity and pressure ratings are critical

the 81L76 utilizes a C2-3 control board architecture to ensure stable communication between the thermostat and system hardware

EWC Controls PRD Regulating Damper Els PW 17895 normally closed circuit that breaksEWC Controls PRD 12" Pressure Regulating Damper Made in USA. Model PRD RD pressure regulating damper is a single blade, round variation of a barometric relief damper. This is the simplest, most economical way of bypassing excess static pressure in multi zone applications. Resistance is controlled by offsetting the arm and adjusting the weights. The arm can be inserted into either side of the damper for added versatility.