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MCDONNELL & MILLER Head Mechanism: 25A-HD Mfr Part # - Replacement HVACR Pumps, Valves & Tubing
MCDONNELLReplacement HVACR Pumps, Valves & Tubing

MCDONNELL & MILLER Head Mechanism: 25A-HD Mfr Part #

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
& MILLER Head Mechanism: 25A-HD Mfr Part #
Category
Replacement HVACR Pumps, Valves & Tubing
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Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

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.

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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