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MCDONNELL & MILLER Make-Up Water Feeder: 25-A Mfr Part # - Replacement HVACR Pumps, Valves & Tubing
MCDONNELLReplacement HVACR Pumps, Valves & Tubing

MCDONNELL & MILLER Make-Up Water Feeder: 25-A Mfr Part #

The MCDONNELL & MILLER 25-A is a make-up water feeder, categorized as a replacement HVACR pump, valve, and tubing component. This unit is compatible with manufacturer part number MM-701F.

SKU 3G-OTH-84245

Also listed as: 25A · 25 A

Brand
MCDONNELL
Item
& MILLER Make-Up Water Feeder: 25-A Mfr Part #
Category
Replacement HVACR Pumps, Valves & Tubing
Available to Order
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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
Manufacturer Part Number
25-A
Product Type
Make-Up Water Feeder
Compatible Manufacturer Part Number
MM-701F

Technical Documents

No technical documents available for this product.
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MCDONNELL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MCDONNELL & MILLER 25-A is a make-up water feeder, categorized as a replacement HVACR pump, valve, and tubing component. This unit is compatible with manufacturer part number MM-701F.

Frequently Asked Questions

What is the MCDONNELL & MILLER 25-A make-up water feeder used for?

The MCDONNELL & MILLER 25-A is a make-up water feeder used in HVAC and boiler systems to automatically add water when pressure drops. It helps maintain proper system pressure and prevents dry firing, protecting boilers and related equipment in commercial and industrial applications.

What are the specifications of the MCDONNELL & MILLER 25-A?

The MCDONNELL & MILLER 25-A is a make-up water feeder with manufacturer part number 25-A and is compatible with part number MM-701F. It is classified as a replacement HVACR pump, valve, and tubing component, designed for automatic water makeup in boiler systems.

Where to buy the MCDONNELL & MILLER 25-A worldwide?

3G Electric supplies the MCDONNELL & MILLER 25-A make-up water feeder to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this replacement HVACR component.

How to install the MCDONNELL & MILLER 25-A make-up water feeder?

Install the MCDONNELL & MILLER 25-A on the boiler return line per manufacturer guidelines. Ensure the supply line is clean and the pressure setting matches system requirements. Always isolate power and water supply before installation, and consult a qualified technician for proper setup.

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

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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