We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

Mcdonnell & Miller Series 51-S/51-S-2 Mechanical Water Feeders/LWCO
Mcdonnell & MillerWater Feeders

Mcdonnell & Miller Series 51-S/51-S-2 Mechanical Water Feeders/LWCO

McDonnell & Miller Water Feeders.

SKU 3G-OTH-02734

Also listed as: 51S51S2 · 51 S 51 S 2 · 51-S-51-S-2

Brand
Mcdonnell & Miller
Item
Series 51-S/51-S-2 Mechanical Water Feeders/LWCO
Category
Water Feeders
Available to Order
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Worldwide Shipping
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Technical specs
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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 Water Feeders.

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 51-S water feeder used for?

The McDonnell & Miller 51-S water feeder is designed for high-capacity low pressure steam and hot water boilers with cold water feed, supporting up to 35,000 sq. ft. (3250 m²). It automatically maintains boiler water levels to prevent low-water conditions.

What are the specifications of the McDonnell & Miller 51-S water feeder?

The McDonnell & Miller 51-S water feeder handles high-capacity boilers up to 35,000 sq. ft. (3250 m²) for low pressure steam and hot water systems with cold water feed. It is a mechanical feeder that ensures reliable water level control.

Where to buy the McDonnell & Miller 51-S water feeder in Singapore?

You can source the McDonnell & Miller 51-S water feeder through 3G Electric in Singapore. We handle logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this industrial water feeder.

How to install the McDonnell & Miller 51-S water feeder?

Install the McDonnell & Miller 51-S water feeder per the manufacturer's manual, ensuring proper piping to the boiler cold water feed line. Mount it at the recommended water level and verify electrical connections if applicable. Always follow local boiler codes and safety guidelines.

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 water feeders. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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For boiler receiver tanks Direct mounting eliminates need for equalizing connections Proportional feed action Mounting Flange six 7 16
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Field-adjustable dwell-feed cycles Multi-color LED status indicator Manual feed button Hard-stop limit to minimize chances of flooding the boiler Compatible with
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Heavy duty Includes No. 2 switch Optional manual reset available Maximum boiler pressure 50 psi (3.5 kg/cm 2 ) Use with TC-4 on hot water systems
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Heavy duty Includes No. 2 switch Optional manual reset available Maximum boiler pressure 50 psi (3.5 kg/cm 2 ) Use with TC-4 on hot water systems
Maintains consistent water level regardless of pressure Water column with integral tappings for gauge glass and tri-cock installations For boilers of any
McDonnell & Miller
Maintains consistent water level regardless of pressure Water column with integral tappings for gauge glass and tri-cock installations For boilers of any

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For low pressure steam boilers with cold water feed Eliminates necessity to manually add water to the boiler Can be used with mechanical or electronic low water
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For low pressure steam boilers with cold water feed Eliminates necessity to manually add water to the boiler Can be used with mechanical or electronic low water
For low pressure steam and hot water boilers larger than 5,000 sq. ft. (465m2) with hot or cold water feed
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For low pressure steam and hot water boilers larger than 5,000 sq. ft. (465m2) with hot or cold water feed
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For steam and hot water boilers with cold water feed Continuous maintenance of minimum safe water level, independent of electrical service Proportional feed
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For receiver tanks in commercial or industrial applications Mounts directly on the receiver, eliminating need for equalizing connections Quick-change replaceable
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For low pressure steam and hot water boilers larger than 5,000 sq. ft. (465m 2 ) capacity with cold water feed Quick-change replaceable cartridge valve and
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