EWC Controls PRD Regulating Damper Els PW 17895 The nickel plated forged brass

The nickel plated forged brass body and chrome plated brass ball provide superior durability for both chilled and hot water applications

this 24V heat sequencer relay utilizes a temperature-responsive bi-metallic mechanism to manage power flow to heating elements

normally closed circuit that breaks cleanly upon activation

and N series

EWC Controls PRD Regulating Damper Els PW 17895 The nickel plated forged brassEWC 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.