this Y-shaped duct fitting stands up to the thermal stresses common in industrial HVAC applications without the risk of corrosion or significant air bypass

and 12KW systems

70" WC SPST (Single Pole Single Throw) switch ensures the inducer motor is generating sufficient negative pressure to safely vent combustion gases

Experienced contractors rely on this aftermarket faucet shank for its metal construction and chrome finish

dry air is non-negotiable

Weil McLain 511-624-401 Pressure Switch Els PW 17895 this Y-shaped duct fitting standsThe Weil McLain 511 624 401 Pressure Switch is a critical safety component designed specifically for high efficiency gas boilers, including the Weil McLain CGi 25 and CGi 3 series. As an OEM air pressure switch, it is factory calibrated to a precise 1. 79" WC (water column) set point to monitor the pressure differential created by the inducer blower. This SPST (Single Pole Single Throw) switch remains normally open and closes only when the system