McDonnell & Miller 157S-P Controller

Combination Low Water Cut-Off and Pump Controller with Snap Acting SPDT Switch and Side Ports (Part Number 175802)

157S-P is the direct replacement for 157S

McDonnell & Miller 157S-P Controller (Part #175802) – Combination Low Water Cut-Off & Pump Controller

The McDonnell & Miller 157S-P Controller by Xylem is a combination low water cut-off and pump controller engineered for boilers of any steaming capacity. Designed for durability and precision, this controller ensures safe boiler operation by preventing dry firing and maintaining proper water levels.

Key Features:

• Model: 157S-P (Part Number 175802)

• Type: Combination Low Water Cut-Off and Pump Controller

• Application: Suitable for boilers of any steaming capacity

• Switch Type:

  • 1 Single Pole, Single Throw (SPST) switch for pump control

  • 1 Single Pole, Double Throw (SPDT) switch for low water cut-off and alarm activation

• Maximum Pressure: 150 PSI

• Reset Type: Manual

• Ports: Side ports with alternate tapping options

• Construction: Monel bellows for superior corrosion resistance

• Action Type: Snap-acting switches for high-temperature applications

Benefits:

• Provides dependable protection against low-water conditions

• Ensures efficient pump control and system safety

• Built for long-lasting performance in demanding boiler environments

Applications:
Ideal for use in industrial and commercial steam boiler systems, offering both pump control and low water cut-off functionality in a single, compact unit.

Why Choose McDonnell & Miller:
As part of Xylem’s trusted boiler control solutions, McDonnell & Miller products are known for precision engineering, reliability, and safety compliance across the HVAC and steam industry.

Keywords:
McDonnell & Miller 157S-P, Xylem 175802, boiler pump controller, low water cut-off switch, McDonnell & Miller controller, steam boiler safety control, 157S-P pump control, HVAC boiler parts, Monel bellows controller, OEM boiler control.

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