Send a part number, a photo, or a whole BOM — we supply it and stand behind it. EXW Singapore — collect from our office.

3G Electric
Mcdonnell & Miller Make-Up Water Feeder Series 851 and 851-S - Water Feeders
Mcdonnell & MillerWater Feeders

Mcdonnell & Miller Make-Up Water Feeder Series 851 and 851-S

Note: listed by manufacturer as obsolete/discontinued.

SKU 3G-OTH-02714

Also listed as: 851 S · 851-S

Brand
Mcdonnell & Miller
Item
Make-Up Water Feeder Series 851 and 851-S
Part Number
851S
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.
EXW Singapore
Collect or forward from our office
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
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.

Technical Specifications

Mcdonnell & Miller
Manufacturer Part Number
851S

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

Note: listed by manufacturer as obsolete/discontinued.

Frequently Asked Questions

What is the McDonnell & Miller 851 water feeder used for?

The McDonnell & Miller 851 water feeder is designed for commercial or industrial receiver tanks. It mounts directly on the receiver, eliminating the need for equalizing connections, and provides automatic water makeup to maintain proper boiler water levels.

What are the specifications of the McDonnell & Miller 851?

The McDonnell & Miller 851 is a water feeder for receiver tanks in commercial or industrial applications. It features a quick-change replaceable design and mounts directly on the receiver. Note: the manufacturer lists this model as obsolete or discontinued.

Where to buy the McDonnell & Miller 851 in Singapore?

3G Electric supplies the McDonnell & Miller 851 water feeder to Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact us for current availability and lead time on this discontinued model.

How to install the McDonnell & Miller 851 water feeder?

Install the McDonnell & Miller 851 directly onto the receiver tank flange. Ensure the tank is depressurized and drained before mounting. Use appropriate gaskets and tighten bolts evenly. Follow standard boiler safety practices and consult a qualified technician.

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.
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