EWC Controls PRD 10" Pressure Regulating Damper Els PW 17895 providing much higher discharge rates

providing much higher discharge rates required for larger boiler outputs

erratic pressure fluctuations

Its full range extends from a cold-off setting of -7°F to a warm-on setting of 40°F

and the PCBBF112 series

This motor is fixed CCW (counter-clockwise) rotation from the lead end

EWC Controls PRD 10" Pressure Regulating Damper Els PW 17895 providing much higher discharge ratesEWC Controls PRD 10" 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.