Description
The Mueller Industries B34237 is a 1-3/8 in. Four-Bolt Check Valve engineered to deliver dependable, one-directional flow control in HVAC, refrigeration, and plumbing applications. Its four-bolt design ensures a secure, leak-resistant connection that holds up under demanding system pressures and temperatures, making it a trusted choice for professional contractors and mechanical systems installers.
Key Features
- 1-3/8 in. valve size for compatibility with standard HVAC and refrigeration line sets
- Four-bolt flange design for a robust, secure, and leak-resistant installation
- Prevents backflow and reverse flow to protect system components and maintain efficiency
- Constructed to Mueller Industries’ exacting quality standards for long-lasting performance
- Suitable for use in HVAC, refrigeration, and related mechanical piping systems
Product Specifications
- Brand: Mueller Industries
- SKU: B34237
- Connection Size: 1-3/8 in.
- Valve Type: Four-Bolt Check Valve
Why Choose Mueller Industries?
Mueller Industries is a globally recognized manufacturer of copper, brass, and other metal products trusted by HVAC and refrigeration professionals worldwide. Their check valves are designed to meet the rigorous demands of commercial and residential mechanical systems, ensuring reliable performance installation after installation.







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