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Mcdonnell & Miller Series 150S/157S Low Water Cut-Off/Pump Controller - Combination Low Water Cut Offspump Controllers
Mcdonnell & MillerCombination Low Water Cut Offspump Controllers

Mcdonnell & Miller Series 150S/157S Low Water Cut-Off/Pump Controller

McDonnell & Miller Combination Low Water Cut Offspump Controllers.

SKU 3G-OTH-02727

Brand
Mcdonnell & Miller
Item
Series 150S/157S Low Water Cut-Off/Pump Controller
Part Number
150S157S
Category
Combination Low Water Cut Offspump Controllers
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
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Technical Specifications

Mcdonnell & Miller
Manufacturer Part Number
150S157S

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Product Description

McDonnell & Miller Combination Low Water Cut Offspump Controllers.

Frequently Asked Questions

What is the McDonnell & Miller 150S/157S used for?

The McDonnell & Miller 150S/157S is a combination low water cut-off and pump controller for steam boilers and hot water systems. It uses Monel bellows for corrosion resistance and snap-action switches to protect against low-water conditions, ensuring safe boiler operation in commercial and industrial applications.

What are the specifications of the McDonnell & Miller 150S/157S?

The 150S/157S features a Monel bellows for corrosion resistance and snap-action switches. It includes one single-pole, single-throw switch for pump control and one for alarm or burner cut-off. Designed for high-temperature service, it is suitable for steam pressures up to 150 psi and water temperatures up to 250 °F.

Where to buy McDonnell & Miller 150S/157S in Singapore?

You can source the McDonnell & Miller 150S/157S combination low water cut-off and pump controller through 3G Electric in Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this industrial boiler safety component.

How to install a McDonnell & Miller 150S/157S low water cut-off?

Install the 150S/157S in the boiler's water line at the recommended height per manufacturer guidelines. Ensure the Monel bellows is not damaged during handling. Wire the snap-action switches according to your pump and burner control circuit. Test operation by lowering water level to verify cut-off and pump activation.

Used in

Common applications for Mcdonnell & Miller
Boiler systems — McDonnell & Miller FS4-3T3-1 flow switch for low-water cutoff and pump protection in 1-inch piping.
Pump control — McDonnell & Miller FS8-W flow switch for detecting flow in 1-inch lines to prevent dry running.
HVAC cooling water — McDonnell & Miller FS6-3/4 flow switch for monitoring flow in 3/4-inch chilled water circuits.
Process piping — McDonnell & Miller FS5-3/4 brass flow switch for hot water applications up to 250°F.
Industrial liquid monitoring — McDonnell & Miller FS6-W-1 flow switch for 1-inch lines with high locked-rotor rating.
Small pipe systems — McDonnell & Miller FS-1 flow switch for 1/2-inch lines in liquid circuits requiring flow detection.
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Mcdonnell & Miller Products

3G Electric supplies Mcdonnell & Miller combination low water cut offspump controllers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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