Mueller A14837 Straight Valve

Install the Mueller A14837 Straight Valve to ensure high-performance flow control in your next refrigeration system. This LINEMASTER packless diaphragm valve features a 5/8" SAE flare connection (MFL x MFL), providing a reliable metal-to-metal seal that eliminates the need for stem packing. Designed with a forged brass body, it offers maximum flow with minimal pressure drop, even under a 700 psig maximum working pressure. The internal assembly utilizes a three-diaphragm design—two stainless steel and one phosphor bronze—for positive isolation and operational durability in demanding HVACR environments. This shutoff valve remains thermally stable across a wide temperature range of -40°F to 300°F, making it UL/cUL recognized and compatible with all major CFC, HCFC, and HFC refrigerants. For contractors managing liquid or suction lines, the A14837 Mueller valve delivers the precision required for long-term system integrity.

• Packless Diaphragm Design: Eliminates stem leaks and the need for frequent packing maintenance.
• Broad Compatibility: Fully functional with standard refrigerants including R22, R134a, R404A, and R410A.
• Forged Brass Construction: High-strength body withstands high-pressure spikes and harsh field conditions.
• Precision Flow Control: Large internal ports maximize CV values to reduce system energy consumption.
• Industry Compliance: Meets UL/cUL standards and is CE certified for commercial and industrial use.

• What is the maximum pressure rating for this valve? The A14837 is rated for a maximum abnormal pressure (MAP) of 700 psig.
• Can this be used for suction line applications? Yes, its straight-through design and high-temperature rating make it suitable for both liquid and suction lines.
• Does this valve require disassembly before brazing? No, since this is a flare-to-flare connection, no brazing is required, protecting the internal diaphragms from heat damage during installation.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.