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The McDonnell & Miller 173702 Model 157S-A is a versatile and durable low water cut-off and pump controller designed for steam boilers with pressures up to 150 psi. This innovative model offers reliable monitoring and control of your boiler's water levels, ensuring safety and efficiency.
Designed to manage various steam boiler capacities, the McDonnell & Miller 157S-A enhances system reliability through its snap-action switches for pump control and alarm actuation. It effectively maintains the proper water level in your boiler, preventing dry firing and potential damage.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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