McDonnell & Miller 157S Controller

McDonnell & Miller 157S Low Water Cut-Off and Pump Controller – Snap Acting SPDT Switch – OEM Part #173502

Ensure reliable boiler operation and system protection with the McDonnell & Miller 157S Controller, a trusted solution for maintaining safe water levels in steam and hot water boilers. This OEM 157S model combines a Low Water Cut-Off and Pump Controller in one durable unit, featuring a snap-acting SPDT switch for precise performance.

Ideal for both commercial and industrial boiler systems, the McDonnell & Miller 157S provides accurate water level control and helps prevent damage caused by low water conditions. This version includes the Head Mechanism Only (Part Number 173003) and is a genuine factory replacement part.

Product Highlights:

• Model: 157S Series

• Part Numbers: 173502 (complete), 173003 (head mechanism only)

• Function: Combination Low Water Cut-Off & Pump Controller

• Switch Type: Snap Acting SPDT (Single Pole, Double Throw)

• Manufacturer: McDonnell & Miller (by Xylem)

• Application: Steam and Hot Water Boiler Systems

• Genuine OEM Part: Factory new and backed by manufacturer warranty

Benefits:

• Ensures safe boiler operation

• Accurate and reliable water level control

• Prevents costly damage due to low water conditions

• Easy integration with existing boiler systems

Trust McDonnell & Miller, a leader in boiler controls, for dependable performance and long-lasting durability. Get the 157S Controller today for enhanced safety and efficiency in your boiler system.