MCDONNELL & MILLER Head Mechanism: 51-2-HD Mfr Part #
The MCDONNELL & MILLER 51-2-HD is a replacement head mechanism for HVACR pumps, valves, and tubing. This component is compatible with manufacturer part number 51-2 and carries the manufacturer part number 51-2-HD.
SKU 3G-OTH-76605
Also listed as: 512HD · 51 2 HD
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The MCDONNELL & MILLER 51-2-HD is a replacement head mechanism for HVACR pumps, valves, and tubing. This component is compatible with manufacturer part number 51-2 and carries the manufacturer part number 51-2-HD.
Frequently Asked Questions
What is the MCDONNELL & MILLER 51-2-HD head mechanism used for?
The MCDONNELL & MILLER 51-2-HD is a replacement head mechanism used in HVACR pumps, valves, and tubing systems. It is designed to replace the 51-2 model, restoring proper flow control and safety shutoff functions in commercial heating and cooling applications.
What are the specifications of the MCDONNELL & MILLER 51-2-HD?
The MCDONNELL & MILLER 51-2-HD is a head mechanism with manufacturer part number 51-2-HD. It is compatible with manufacturer part number 51-2. This component is classified as a replacement part for HVACR pumps, valves, and tubing systems.
Where to buy the MCDONNELL & MILLER 51-2-HD worldwide?
3G Electric supplies the MCDONNELL & MILLER 51-2-HD head mechanism worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.
How to install the MCDONNELL & MILLER 51-2-HD head mechanism?
To install the MCDONNELL & MILLER 51-2-HD, first isolate power and drain the system. Remove the old head mechanism and gasket, then fit the new 51-2-HD unit, ensuring proper alignment with the valve stem. Reassemble, pressurize, and test for leaks per manufacturer guidelines.
Used in
Common applications for MCDONNELLMCDONNELL 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.
