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3G Electric
MUELLER Magnetic Check Valve - Magnetic Check Valves
MUELLERMagnetic Check Valves

MUELLER Magnetic Check Valve

The MUELLER Refrigerant Check Valve is a magnetic check valve designed for refrigerant systems. This model, part number A 17939, features 7/8-inch connections and a 3/4-inch cut out, constructed from copper.

SKU 3G-OTH-71975

Also listed as: A17939 · A-17939

Brand
MUELLER
Item
Magnetic Check Valve
Part Number
A 17939
Category
Magnetic Check Valves
Available to Order
Also known as:A 17939MUELLER
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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

MUELLER
Manufacturer Part Number
A 17939
Material
Copper
Cut Out
3/4 in
Connections
7/8 in

Technical Documents

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

Product Description

The MUELLER Refrigerant Check Valve is a magnetic check valve designed for refrigerant systems. This model, part number A 17939, features 7/8-inch connections and a 3/4-inch cut out, constructed from copper.

Frequently Asked Questions

What is a MUELLER refrigerant check valve used for?

A MUELLER refrigerant check valve prevents backflow in refrigeration and air conditioning systems. This magnetic check valve, model A 17939, ensures proper flow direction, protecting compressors and system components from reverse refrigerant migration.

What are the specifications of the MUELLER A 17939 check valve?

The MUELLER A 17939 is a magnetic check valve with 7/8-inch connections and a 3/4-inch cut out. It is constructed from copper, making it suitable for refrigerant lines. This valve is designed for reliable one-way flow control in HVACR systems.

Where to buy MUELLER refrigerant check valves worldwide?

3G Electric supplies MUELLER refrigerant check valves, including model A 17939, to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this copper magnetic check valve.

How to install a MUELLER magnetic check valve?

Install the MUELLER magnetic check valve in the refrigerant line with flow direction matching the arrow on the body. Use proper brazing techniques for copper connections, and ensure the valve is positioned vertically or as recommended by the manufacturer to allow the magnetic mechanism to operate correctly.

Used in

Common applications for MUELLER
Commercial refrigeration — Mueller diaphragm valves (e.g., MPN A 14841) for refrigerant flow control in supermarket racks and cold storage.
HVAC systems — Mueller sight glasses (e.g., MPN A 18101) for monitoring refrigerant charge and detecting moisture in air conditioning lines.
Industrial process cooling — Mueller ball valves (e.g., MPN A 17934) for isolating flow in chiller and process piping.
Refrigeration compressor protection — Mueller magnetic check valves (e.g., MPN A 17939) to prevent backflow and compressor damage.
A2L refrigerant systems — Mueller A2L-compatible valves and components for use with low-flammability refrigerants in new equipment.
Refrigerant piping maintenance — Mueller check valves and sight glasses for system diagnostics and repair in HVAC and refrigeration.
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MUELLER Products

3G Electric supplies MUELLER magnetic check valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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