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Key Benefits for Technicians High-Pressure Tolerance: Rated for up to 150 PSI
then turn clockwise five full rotations to engage the spring
this assembly minimizes steam loss and prevents air binding
the 6-inch paddle provides the necessary surface area for low-flow sensitivity
McDonnell & Miller 159S Controller Freon Key Benefits for Technicians High-PressureThe McDonnell & Miller 159S Controller (Part Number 178802) is a specialized combination low water cut off and pump controller designed for heavy duty commercial and industrial steam boiler applications. Operating at a maximum pressure of 150 psi, this unit integrates a float operated mechanism with dual bi metal snap acting switches to ensure precise level management. The configuration features one SPST switch dedicated to pump control and a second
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