maintaining safe equipment operation and system efficiency throughout the peak heating season

it functions effectively on 2-wire systems by connecting to the RH and W terminals

we recommend pairing it with the specified Belimo series to ensure the clamp geometry matches the extension diameter

or failure to open under the rated MOPD

this furnace safety sensor ensures broad compatibility and maintains the manifold integrity required for peak furnace performance and safety compliance

McDonnell & Miller 67-G Low Water Cut Off Els PW 17895 maintaining safe equipment operation andThe McDonnell & Miller 67 G is a float operated mechanical low water cut off engineered specifically for steam boilers and millivolt service applications. For contractors managing residential or commercial steam systems, this auto reset control provides critical burner protection by interrupting the millivolt burner circuit if the water level drops to a dangerous point. The unit features dual precision switches, allowing for simultaneous low water cut