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

This unit features a manual hi-lo adjustment range of 1

supporting a system static pressure up to 400 psi and fluid temperatures between 32° and 200°F

Nitrile Sealing: Optimized for hydrocarbons and neutral fluids

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