This kit provides all internal moving parts

proportional premixers

Industrial Durability: Engineered for long-term reliability in specialized HVACR environments using high-grade internal components

High Efficiency: Features a redesigned valve plate and bearing surfaces that improve oil flow and reduce mechanical wear for a lower total cost of ownership

Common Questions: Is the FCP-NA-701-B compatible with 4-pipe systems

McDonnell & Miller 150S-MD-HD Controller THPU32HP7Y This kit provides all internalThe McDonnell & Miller 150S MD HD (Part Number 173103) is a high performance combination low water cut off and pump controller head mechanism designed for demanding commercial and industrial steam boiler applications. This specific model features maximum differential operation, a critical function that prevents nuisance burner shutdowns in systems with fluctuating water levels or low pressure environments. By providing a wider 7 8 inch differential