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MCDONNELL Make-Up Feeder, 21 - Replacement HVACR Pumps, Valves & Tubing
MCDONNELLReplacement HVACR Pumps, Valves & Tubing

MCDONNELL Make-Up Feeder, 21

The MCDONNELL & MILLER Make-Up Feeder, model 21, is a replacement HVACR pump, valve, and tubing component. It is compatible with manufacturer part number MM-701F. This product is designed for use in industrial…

SKU 3G-OTH-85072

Brand
MCDONNELL
Item
Make-Up Feeder, 21
Part Number
21
Category
Replacement HVACR Pumps, Valves & Tubing
Available to Order
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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 Specifications

MCDONNELL
Manufacturer Part Number
21
Product Type
Make-Up Feeder
Compatible Manufacturer Part Number
MM-701F

Technical Documents

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MCDONNELL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MCDONNELL & MILLER Make-Up Feeder, model 21, is a replacement HVACR pump, valve, and tubing component. It is compatible with manufacturer part number MM-701F. This product is designed for use in industrial equipment systems.

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 Make-Up Feeder 21 used for?

The MCDONNELL & MILLER Make-Up Feeder 21 automatically adds water to HVAC and industrial boiler systems to maintain proper water level and pressure. It is a replacement component for systems requiring the MM-701F compatible part, ensuring reliable operation in commercial and industrial heating applications.

What are the specifications of the MCDONNELL & MILLER Make-Up Feeder 21?

The MCDONNELL & MILLER Make-Up Feeder 21 is a make-up feeder with manufacturer part number 21. It is compatible with manufacturer part number MM-701F. This replacement HVACR component is designed for use in industrial boiler and heating systems to maintain water levels.

Where to buy the MCDONNELL & MILLER Make-Up Feeder 21 worldwide?

3G Electric supplies the MCDONNELL & MILLER Make-Up Feeder 21 to customers worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this replacement HVACR component to your facility. Contact us for availability and delivery options.

How to install the MCDONNELL & MILLER Make-Up Feeder 21?

Install the MCDONNELL & MILLER Make-Up Feeder 21 by first isolating the boiler system and draining water below the feeder connection. Mount the feeder vertically on the supply line, connect piping per local codes, and test for leaks before restoring system pressure. Always follow manufacturer guidelines.

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
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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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