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: Four-Bolt

CHECKMASTER® Four Bolt check valves feature forged brass bodies that exceed the most stringent quality standards in the industry and have been designed for easy removal and reassembly of internal components.

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Quality & Technical Information

  • Design Pressure (DP) / Maximum abnormal pressure (MAP): 700 psig, 48 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
  • 100% tested
  • Horizontal or vertical installation (not to be installed with bonnet facing down)
  • "Y" type design provides minimal pressure drop and increased flow capacity
  • Design features easy removal and reassembly of internal components
  • Forged brass body exceeds the most stringent quality standards in the industry

Uses

  • Refrigeration
  • Air Conditioning
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Specifications & Technical Drawings

  • Four-Bolt Style - Dimensions - English / Metric

    PDF

  • Four-Bolt Style - Dimensions - Chinese

    PDF

  • Four-Bolt Style - Dimensions - Spanish

    PDF

  • Installation Instructions

    PDF