Master Craft Industrial Equipment
Mueller Streamline Co. Headquarters
150 Schilling Blvd
Suite 201
Collierville, Tennessee 38017
United States
Phone: 901 753 3200
Mueller Streamline Co. International
525 Okeechobee Blvd
Suite 860
West Palm Beach, FL 33401
United States
Phone: 561 273 8300
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Features:
  • Continuous operating temperature (COT): -40°F/300°F, -40°C/149°C
  • Contact factory or visit website for compatibility with CFC, HCFC, HFC and HFO refrigerants and oils
  • UL/cUL Recognized, Conforms to Pressure Equipment Directive 2014/68/EU
  • Enhanced internal design for maximum flow and minimum pressure drop
  • Design Pressure (DP) / Maximum abnormal pressure (MAP): Charted below
  • 1/4" - 1/2" sized valves are designed for use with R744 (CO2)
  • 5/8" - 7/8" sized valves are designed for use with R744 in cascading systems or secondary loops where design pressures are below the R744 critical pressure of 1058 psi
    • CHECKMASTER® Check Valves - Piston
    CHECKMASTER® Check Valves - Piston - Dimensionss
    Unit of Measure
    Items CHECKMASTER® Check Valves - Piston
    A 18720
    CHECKMASTER® Check Valves - Piston     		CHECKMASTER® Check Valves - Piston
    A 18721
    CHECKMASTER® Check Valves - Piston     		CHECKMASTER® Check Valves - Piston
    A 18722
    CHECKMASTER® Check Valves - Piston     		CHECKMASTER® Check Valves - Piston
    A 18723
    CHECKMASTER® Check Valves - Piston     		CHECKMASTER® Check Valves - Piston
    A 18838
    CHECKMASTER® Check Valves - Piston
    Connection Size N/A 1/4 in N/A 3/8 in N/A 1/2 in N/A 5/8 in N/A 3/4 in
    End Type N/A ODS
    Cv N/A 0.70 N/A 1.40 N/A 2.71 N/A 4.10 N/A 8.76
    Kv N/A 0.61 N/A 1.21 N/A 2.34 N/A 3.55 N/A 7.58
    ΔP N/A 1 psi N/A 1 psi N/A 0.75 psi N/A 0.75 psi N/A 0.75 psi
    MAP N/A 1305 psi N/A 1305 psi N/A 1305 psi N/A 1000 psi N/A 1000 psi
    Weight N/A 0.05 kg0.11 lb N/A 0.05 kg0.12 lb N/A 0.07 kg0.16 lb N/A 0.10 kg0.22 lb N/A 0.19 kg0.43 lb
    Operating Temperature [Min] N/A -40 ºC-40 ºF
    Operating Temperature [Max] N/A 149 ºC300 ºF
    A N/A 3.62 in92 mm N/A 4.29 in109 mm N/A 5.15 in131 mm N/A 5.43 in138 mm N/A 7.01 in178 mm
    B N/A 3 in76 mm N/A 3.6 in91 mm N/A 4.28 in109 mm N/A 4.43 in113 mm N/A 5.86 in149 mm
    C N/A 0.71 in18 mm N/A 0.71 in18 mm N/A 0.85 in22 mm N/A 1 in25 mm N/A 1.34 in34 mm