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MCDONNELL 64-HD Head Mechanism - Replacement HVACR Pumps, Valves & Tubing
MCDONNELLReplacement HVACR Pumps, Valves & Tubing

MCDONNELL 64-HD Head Mechanism

The MCDONNELL & MILLER 64-HD Head Mechanism is a replacement component for HVACR pumps, valves, and tubing. It is compatible with manufacturer part number 144400. This head mechanism is designed for use in industrial…

SKU 3G-OTH-85684

Also listed as: 64HD · 64 HD

Brand
MCDONNELL
Item
64-HD Head Mechanism
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
64-HD
Product Type
Head Mechanism
Compatible Manufacturer Part Number
144400

Technical Documents

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

Product Description

The MCDONNELL & MILLER 64-HD Head Mechanism is a replacement component for HVACR pumps, valves, and tubing. It is compatible with manufacturer part number 144400. This head mechanism is designed for use in industrial fluid handling systems.

Frequently Asked Questions

What is the MCDONNELL & MILLER 64-HD Head Mechanism used for?

The MCDONNELL & MILLER 64-HD Head Mechanism is a replacement component for HVACR pumps, valves, and tubing in industrial fluid handling systems. It is designed to maintain proper flow control and system reliability in heating, ventilation, air conditioning, and refrigeration applications.

What are the specifications of the MCDONNELL & MILLER 64-HD Head Mechanism?

The MCDONNELL & MILLER 64-HD Head Mechanism has manufacturer part number 64-HD and is compatible with part number 144400. It is classified as a head mechanism for replacement in HVACR pumps, valves, and tubing. This component is used in industrial fluid handling systems.

Where to buy the MCDONNELL & MILLER 64-HD Head Mechanism worldwide?

3G Electric supplies the MCDONNELL & MILLER 64-HD Head Mechanism worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the MCDONNELL & MILLER 64-HD Head Mechanism?

Install the MCDONNELL & MILLER 64-HD Head Mechanism by first isolating the system and relieving pressure. Remove the old head mechanism, clean the mounting surface, and install the new unit with proper gaskets. Torque fasteners to manufacturer specifications and test for leaks before returning to service.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
MCDONNELL & MILLER Head Mechanism: 94-HD Mfr Part #
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MCDONNELL & MILLER Head Mechanism: 94-HD Mfr Part #
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
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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 & MILLER Head Mechanism: 94-HDLS Mfr Part #
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MCDONNELL & MILLER Head Mechanism: 94-HDLS Mfr Part #
Replacement head mechanism for HVACR pumps, valves, and tubing. Compatible with manufacturer part number 166400. Used in industrial heating, cooling, and process systems to maintain flow control and safety functions
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Replacement head mechanism for HVACR pumps, valves, and tubing. Compatible with manufacturer part number 166400. Used in industrial heating, cooling, and process systems to maintain flow control and safety functions
Replacement head mechanism for HVACR pumps, valves, and tubing. Compatible with manufacturer part number 134900. Used to restore function in fluid-handling systems for commercial and industrial heating, ventilation, air conditioning, and refrigeration applications
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Replacement head mechanism for HVACR pumps, valves, and tubing. Compatible with manufacturer part number 134900. Used to restore function in fluid-handling systems for commercial and industrial heating, ventilation, air conditioning, and refrigeration applications
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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

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