5 Essential Elements For hvac system parts
WG means Drinking water Gauge. WG is an element from the measurement device for that strain of admirer and pump. IN.WG which means inch h2o gauge is the Imperial device for pressure. For example, ducts are normally designed with 0.one in.wg of tension loss per one hundred ft of duct size.BDD means Backdraft Damper. BDD is used to be sure air flows