Review on 🌮 Taco 400-4 1/8 Inch NPT Float Air Hy-Vent - Enhanced for SEO by Joshua Cameron

Same model number as my heating contractor used in my system before, but they're $160 required to replace this and a Caleffi machine. Ventilation. This automatic taco air vent was very easy to replace. Shut off the water supply, close the existing ball valves to isolate the boiler or zone, drain the boiler until the pressure gauge drops to zero. Unscrew the old valve, put teflon tape on the new one and screw on the new valve. Reverse the process and you'll be done in 10 minutes. Be sure to leave the metal cap loosely in place to allow air to escape. Note that for tight gap issues, the Caleffi auto vent has a 1/8" narrower profile, so the pros used two different brands on my system (the riser fits very close to the vent at the top). my boiler and taco would not fit) Unless there are clearance issues, my heating engineer prefers the taco.