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
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. Size CFM 8" 400 10" 750 12" 1200 14" 1800 16" 2400 CFM calculated @.3" W.C. FOR MORE INFORMATION GO TO: http://www.ewccontrols.com/acrobat/090375a0229.pdf

****This style damper is discontinued, some sizes still available. Please call for availability. This is replaced by the CLBD (Constant Load By Pass Damper). In stock and available on this website.