Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
Mcdonnell & Miller Series 551-S Make-Up Water Feeder - Water Feeders
Mcdonnell & MillerWater Feeders

Mcdonnell & Miller Series 551-S Make-Up Water Feeder

McDonnell & Miller Water Feeders.

SKU 3G-OTH-02737

Also listed as: 551S · 551 S

Brand
Mcdonnell & Miller
Item
Series 551-S Make-Up Water Feeder
Part Number
551-S
Category
Water Feeders
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Mcdonnell & Miller
Manufacturer Part Number
551S

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

McDonnell & Miller Water Feeders.

Frequently Asked Questions

What is the McDonnell & Miller 3G-OTH-02737 water feeder used for?

The McDonnell & Miller 3G-OTH-02737 is a proportional water feeder designed to automatically add water to steam separators, receivers, tanks, or other vessels. It maintains proper water levels in low-pressure steam heating systems, preventing dry-firing and ensuring efficient operation.

What are the specifications of the McDonnell & Miller 3G-OTH-02737 water feeder?

The 3G-OTH-02737 features a proportional feed action and a quick-change replaceable cartridge valve. It is designed for low-pressure steam applications. For exact pressure ratings and connection sizes, refer to the manufacturer's datasheet. 3G Electric supplies this model for Singapore buyers.

Where to buy the McDonnell & Miller 3G-OTH-02737 in Singapore?

3G Electric supplies the McDonnell & Miller 3G-OTH-02737 water feeder to Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact our team for a quotation and lead time on this proportional feed water feeder.

How to install a McDonnell & Miller 3G-OTH-02737 water feeder?

Install the 3G-OTH-02737 in the supply line to the vessel, ensuring proper orientation per the manual. Use a quick-change cartridge valve for easy maintenance. Always follow local plumbing codes and the manufacturer's instructions. 3G Electric can provide sourcing support for this McDonnell & Miller model.

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
Not sure this is the right part? Photo-identify it

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from McDonnell & Miller

View all McDonnell & Miller parts

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first