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

3G Electric
MCDONNELL 25-A Make-Up Water Feeder - Replacement HVACR Pumps, Valves & Tubing
MCDONNELLReplacement HVACR Pumps, Valves & Tubing

MCDONNELL 25-A Make-Up Water Feeder

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
25-A Make-Up Water Feeder
Part Number
25-A
Category
Replacement HVACR Pumps, Valves & Tubing
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 — 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 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.
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 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.

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

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.

You might also need

Pump Accessories Valves & Regulation Motors & Drives All Products

Compatible alternatives & equivalents

More from MCDONNELL

View all MCDONNELL parts
Replacement head mechanism for HVACR pumps, valves, and tubing systems. Compatible with manufacturer part number 165302. Used to restore flow control and safety interlock functions in commercial and industrial heating, ventilation, and refrigeration applications
MCDONNELL
Replacement head mechanism for HVACR pumps, valves, and tubing systems. Compatible with manufacturer part number 165302. Used to restore flow control and safety interlock functions in commercial and industrial heating, ventilation, and refrigeration applications
This low water cut-off is a safety device for steam and hot water boilers. It automatically shuts off the burner when water level drops below a safe point, preventing dry-fire damage. Used in commercial and industrial heating systems
MCDONNELL
This low water cut-off is a safety device for steam and hot water boilers. It automatically shuts off the burner when water level drops below a safe point, preventing dry-fire damage. Used in commercial and industrial heating systems
MCDONNELL
MCDONNELL
This valve assembly is a replacement component for HVACR systems, designed to control fluid flow. It is compatible with manufacturer part number MM-701F. Typical applications include commercial and industrial boiler and pump installations
Replacement head mechanism for HVACR pumps, valves, and tubing. Compatible with manufacturer part number 63-B-M. Used as a direct replacement component in compatible systems
MCDONNELL
Replacement head mechanism for HVACR pumps, valves, and tubing. Compatible with manufacturer part number 63-B-M. Used as a direct replacement component in compatible systems
MCDONNELL
MCDONNELL
Replacement head mechanism for HVACR pumps, valves, and tubing. Compatible with manufacturer part number 51-2. Used to restore proper flow control and safety shutoff functions in commercial heating and cooling systems
Replacement head mechanism for HVACR pumps, valves, and tubing. Compatible with manufacturer part number MM-701F. Used as a direct replacement component in compatible systems
MCDONNELL
Replacement head mechanism for HVACR pumps, valves, and tubing. Compatible with manufacturer part number MM-701F. Used as a direct replacement component in compatible systems

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first