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MCDONNELL 25A-HD Head Mechanism - Replacement HVACR Pumps, Valves & Tubing
MCDONNELLReplacement HVACR Pumps, Valves & Tubing

MCDONNELL 25A-HD Head Mechanism

The MCDONNELL & MILLER 25A-HD Head Mechanism is a replacement component for HVACR pumps, valves, and tubing. It is compatible with manufacturer part number 25-A and is identified by manufacturer part number 25A-HD.

SKU 3G-OTH-76527

Also listed as: 25AHD · 25A HD

Brand
MCDONNELL
Item
25A-HD Head Mechanism
Category
Replacement HVACR Pumps, Valves & Tubing
Available to Order
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Worldwide Shipping
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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
25A-HD
Product Type
Head Mechanism
Compatible Manufacturer Part Number
25-A

Technical Documents

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

Product Description

The MCDONNELL & MILLER 25A-HD Head Mechanism is a replacement component for HVACR pumps, valves, and tubing. It is compatible with manufacturer part number 25-A and is identified by manufacturer part number 25A-HD.

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 25A-HD Head Mechanism used for?

The 25A-HD Head Mechanism is a replacement component for HVACR pumps, valves, and tubing. It is designed to restore proper operation in heating and cooling systems that use MCDONNELL & MILLER controls, ensuring reliable flow regulation and system safety.

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

The 25A-HD is a Head Mechanism with manufacturer part number 25A-HD. It is compatible with MCDONNELL & MILLER part number 25-A. This replacement component is used in HVACR pumps, valves, and tubing applications to maintain system integrity.

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

3G Electric supplies the MCDONNELL & MILLER 25A-HD Head Mechanism to customers worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us for a quote and lead time on this replacement component.

How to install the MCDONNELL & MILLER 25A-HD Head Mechanism?

Installation should follow the manufacturer’s instructions for the 25A-HD Head Mechanism. Typically, this involves isolating the system, removing the old head, and securing the new mechanism with proper alignment. Always consult a qualified technician and refer to MCDONNELL & MILLER guidelines for safe replacement.

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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