Description
McDonnell & Miller 176220 157S-R High Pressure Combo Low Water Cut-Off & Pump Controller (Steam)
Ensure safe and reliable water level management for your boiler with the 157S-R — a rugged float-type combo low water cut-off and pump controller designed for residential, commercial, and industrial steam boilers up to 150 PSI.
Key Benefits:
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Built-in water column with alternate tappings for flexible installation
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Monel bellows resist corrosion for long-lasting performance
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Snap-action switches designed for high-temperature steam service
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Automatic reset ensures continuous, worry-free operation
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Controls both pump activation and low water alarm functions
Technical Specifications
| Feature | Specification |
|---|---|
| Max Pressure | 150 psi (10.5 kg/cm²) |
| Application | Steam Boilers |
| Switch Types | SPDT (Pump Control), SPST (LWCO & Alarm) |
| Reset Type | Automatic |
| Connection Type | Threaded (1" NPT) |
| Pilot Duty Rating | 345 VA |
| Dimensions (L×W×D) | 17" × 6.25" × 13.38" |
| Special Features | Water Column, Alternate Tappings |
Upgrade your boiler safety system with the dependable McDonnell & Miller 157S-R controller — engineered for precision, durability, and ease of installation.
