the 55440 disc is ground and lapped to exacting tolerances to ensure a positive shut-off and long-term condensate removal efficiency

the SEC99AA-24 armored capillary (identical to SEC99AA-24C) is a reliable solution for connecting pressure-actuated controls

What is the physical diameter of a #54 orifice

thermostat harnesses

and York systems

McDonnell & Miller 63 Low Water Cut Off Freon the 55440 disc is groundThe McDonnell & Miller 63 Low Water Cut Off (Part Number 142400) is a heavy duty, float operated safety control designed for residential, commercial, and industrial boiler applications. This mechanical LWCO is specifically engineered for use with both hot water and steam boilers, providing a critical layer of protection against dry fire conditions. Featuring a 1" NPT threaded connection for equalizing pipes, it is rated for a maximum boiler pressure