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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

Also listed as: 150S157S · 150S 157S · 150S-157S

Brand
Mcdonnell & Miller
Item
Series 150S/157S Low Water Cut-Off/Pump Controller
Category
Combination Low Water Cut Offspump Controllers
Available to Order
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Documents

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Mcdonnell & Miller Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

McDonnell & Miller Combination Low Water Cut Offspump Controllers.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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
Steam boiler low-water cutoff — McDonnell & Miller inline flow switches (e.g., FS-1) for automatic burner shutdown
Cooling water flow monitoring — McDonnell & Miller insertion-style switches (e.g., FS4-3D) in large-diameter pipes
Hazardous-area process lines — McDonnell & Miller FS7-4E with NEMA 7/9 enclosure for Class I, Div 1 locations
HVAC chilled water systems — McDonnell & Miller FS6-1 inline switch for pump flow verification
Industrial wastewater treatment — McDonnell & Miller FS4-3S stainless steel switch for corrosive fluid flow detection
Boiler feedwater control — McDonnell & Miller FS8-WJ with BSP connections for international installations

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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