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Contaminant Control: Effectively removes solder particles
Changing the blade count or pitch will alter the static pressure and motor load
By restoring reliable 24V communication between the thermostat and the high-voltage components
Durable Disc Construction: Built to withstand the constant thermal cycling found in high-efficiency electric heating stages
use a multimeter to check for electrical continuity across the terminals
EWC Controls PRD Regulating Damper Els PW 17895 Contaminant Control: Effectively removes solderEWC 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.
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