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MCDONNELL 157S-M Low Water Cut-Off, Manual Reset - Replacement HVACR Pumps, Valves & Tubing
MCDONNELLReplacement HVACR Pumps, Valves & Tubing

MCDONNELL 157S-M Low Water Cut-Off, Manual Reset

MCDONNELL Replacement HVACR Pumps, Valves & Tubing. Specifications: Product Type: Low Water Cut-Off.

SKU 3G-OTH-77646

Also listed as: 157SM · 157S M

Brand
MCDONNELL
Item
157S-M Low Water Cut-Off, Manual Reset
Part Number
157S-M
Category
Replacement HVACR Pumps, Valves & Tubing
Available to Order
Also known as:157S-MMCDONNELL
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Technical Specifications

MCDONNELL
Manufacturer Part Number
157S-M
Product Type
Low Water Cut-Off

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MCDONNELL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

MCDONNELL Replacement HVACR Pumps, Valves & Tubing. Specifications: Product Type: Low Water Cut-Off.

Frequently Asked Questions

What is the MCDONNELL & MILLER 157S-M low water cut-off used for?

The MCDONNELL & MILLER 157S-M is a low water cut-off used in steam and hot water boilers to protect against low-water conditions. It automatically shuts down the burner when water level drops, preventing boiler damage. Common in commercial and industrial HVAC systems.

What are the specifications of the MCDONNELL & MILLER 157S-M?

The MCDONNELL & MILLER 157S-M is a low water cut-off with manufacturer part number 157S-M. It is a snap-action, manual-reset type level control designed for boiler safety. For detailed pressure and temperature ratings, consult the manufacturer's datasheet.

Where to buy the MCDONNELL & MILLER 157S-M worldwide?

You can source the MCDONNELL & MILLER 157S-M low water cut-off through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to install the MCDONNELL & MILLER 157S-M low water cut-off?

Install the MCDONNELL & MILLER 157S-M in the boiler water line per manufacturer guidelines. Ensure proper electrical connections and manual-reset functionality. Always follow local codes and use a qualified technician. 3G Electric supplies the unit; consult the manual for specific wiring and mounting.

Used in

Common applications for MCDONNELL
Steam boiler low-water cutoff — McDonnell & Miller 61 level control
Condensate receiver level monitoring — McDonnell & Miller RS-4-BR-1 4-level sensor
HVACR pump suction filtration — McDonnell & Miller 340700 strainer basket assembly
Flow switch head replacement — McDonnell & Miller 63-HD head mechanism
Boiler control circuit safety — McDonnell & Miller 7-BM electrical switch with manual reset
Field servicing of flow switches — McDonnell & Miller 310452 cartridge kit
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MCDONNELL Products

3G Electric supplies MCDONNELL replacement hvacr pumps, valves & tubing. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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