Engineered to exceed
the most stringent quality standards.

Mueller Refrigeration offers a complete line of Inline, Four Bolt, and Magnetic check valves. Inline check valves are designed for maximum flow and minimum pressure drop; Four Bolt check valves that can overheat and damage internal components.

Check Valves Masthead
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Style: Magnetic

CHECKMASTER® Magnetic check valve series offers the latest technology in valve design with DuraForm processing, a manufacturing method eliminating the use of braze materials for internal component installation. The result is a valve that can be installed with hard or soft solder and exhibits a near zero leak rate with exceptional performance characteristics.

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Quality & Technical Information

  • Design Pressure (DP) / Maximum abnormal pressure (MAP): Up to 800 psig, 55 bar
  • Continuous operating temperature (COT): -40°F/300°F, -40°C/149°C
  • UL/cUL Recognized, Conforms to EU Pressure Equipment Directive and UK Pressure Equipment Regulation
  • Built-in 30 mesh stainless steel screen
  • Internal components installed with DuraForm Technology
  • Mechanically formed solder cup stops for easy installation
  • Flexible for installation in vertical or horizontal position
  • Hermetically formed solid copper body assures zero leak potential


  • Refrigeration
  • Air Conditioning
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Specifications & Technical Drawings

  • Magnetic Style - Dimensions - English / Metric


  • Magnetic Style - Dimensions - Chinese


  • Magnetic Style - Dimensions - Spanish


  • Magnetic Check Valve Specification


  • Installation Instructions