5 Essential Elements For hvac system parts
WG means Water Gauge. WG is an element with the measurement device for that pressure of supporter and pump. IN.WG which stands for inch h2o gauge will be the Imperial unit for tension. As an example, ducts are Commonly designed with 0.1 in.wg of tension loss per 100 ft of duct size.BDD means Backdraft Damper. BDD is utilized to be certain air flows