We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

3G Electric
MUELLER Four-Bolt Check Valve - Four-Bolt Check Valves
MUELLERFour-Bolt Check Valves

MUELLER Four-Bolt Check Valve

The MUELLER Refrigerant Check Valve is a four-bolt check valve constructed from brass. It features 1 3/8 in connections and a 1 1/16 in cut out, identified by manufacturer part number B 34237.

SKU 3G-OTH-72073

Also listed as: B34237 · B-34237

Brand
MUELLER
Item
Four-Bolt Check Valve
Part Number
B 34237
Category
Four-Bolt Check Valves
Available to Order
Also known as:B 34237MUELLER
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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.

Technical Specifications

MUELLER
Manufacturer Part Number
B 34237
Material
Brass
Cut Out
1 1/16 in
Connections
1 3/8 in

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The MUELLER Refrigerant Check Valve is a four-bolt check valve constructed from brass. It features 1 3/8 in connections and a 1 1/16 in cut out, identified by manufacturer part number B 34237.

Frequently Asked Questions

What is the MUELLER Refrigerant Check Valve used for?

The MUELLER Refrigerant Check Valve is used in HVAC and refrigeration systems to prevent reverse flow of refrigerant. It ensures one-directional flow, protecting compressors and system components. This brass four-bolt check valve is suitable for commercial and industrial refrigeration applications where reliable backflow prevention is required.

What are the specifications of the MUELLER Refrigerant Check Valve B 34237?

The MUELLER Refrigerant Check Valve B 34237 is a four-bolt check valve made of brass. It has 1 3/8 in connections and a 1 1/16 in cut out. The manufacturer part number is B 34237. This valve is designed for use in refrigeration systems to prevent refrigerant backflow.

Where to buy the MUELLER Refrigerant Check Valve worldwide?

You can source the MUELLER Refrigerant Check Valve B 34237 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time. We supply this brass four-bolt check valve for refrigeration applications.

How to install a MUELLER four-bolt check valve?

Install the MUELLER four-bolt check valve in the refrigerant line with the flow arrow pointing in the correct direction. Ensure the gaskets are properly seated and tighten the four bolts evenly to the manufacturer's torque specification. Always follow standard refrigeration system installation practices and check for leaks after installation.

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.
Not sure this is the right part? Photo-identify it→

MUELLER Products

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

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Compatible alternatives & equivalents

Cross-referenced by specification & description
ZURN
ZURN
The ZURN 8-350 is an 8-inch double check backflow preventer with flange x flange connections and NRS gate valve shut-off valves. It has an overall length of 60.88 inches. This device is used in commercial and industrial water systems to prevent backflow in non-health-hazard cross-connections, such as irrigation, fire sprinkler, and boiler feed lines
ZURN
ZURN
Double check backflow preventer for water lines, with 2 1/2 in pipe size and groove x groove connections. Features NRS gate valve shut-off and operates in temperatures from 33°F to 140°F. Overall length is 35.13 in
ZURN
ZURN
Double check backflow preventer for non-health-hazard cross-connections in water systems. 8-inch pipe size with Groove x Groove connections and NRS gate valve shut-offs. EPDM seals, temperature range 33°F to 140°F. Overall length 62 inches

More from MUELLER

View all MUELLER parts →

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first