Check Valves:

check valve, check valve Australia

Check valves are used to prevent surge and water hammer due to flow reversal. The specially designed springs close the discs before flow reversal can occur. There are several types of check valves available, such as silent wafer type, silent globe type and double disc type. These check valves are available with Cast Iron, Bronze, Carbon Steel and Stainless Steel Bodies.
The F91 Series, which is designed to fit inside the bolt circle of 125#/150# or 250#/300# flanges is available from 1 1/2" through 12" pipe size. The F105 and F107 Series, which are designed to bolt up to mating flanges, are available from 2" through 30" pipe size. The 71 Series, which is inside the bolt circle of the same ANSI class flanges, is available from 2" through 54" pipe sizes.

This is the list of our check valves:

  • F71 - Class 125 Cast Iron Body Double Disc Check Valve
  • F91 - 125 LB. Cast Iron Silent Wafer Check Valve
  • F105 & F107 - Class 125 & Class 250 Cast Iron Body, Globe Type Check Valve
  • Pressure Drops for Check Valves

  • F71 - Class 125 Cast Iron Body Double Disc Check Valve

    These check valves are designed for liquid or gas service in accordance with ANSI rated working pressures. The 71 series will prevent surge and water hammer due to flow reversal. The specially designed springs close the discs before flow reversal can occur.

    F71 - Class 125 Cast Iron Body Double Disc Check Valve Double disc Check Valve, Check Valve double disc Check Valve, Check Valve
    PRESSURE - TEMPERATURE RATINGS
    WOG: 2" to 12" 200 psi @ 150° F
    WOG: 14" to 54" 150 psi @ 150° F
    Size In. 2" 2 1/2" 3" 4" 5" 6" 8" 10" 12" 14" 16" 18" 20" 24" 30"
      mm. 50 65 80 100 125 150 200 250 300 350 400 450 500 600 750
    A In. 4 1/8 4 7/8 5 3/8 6 7/8 7 3/4 8 3/4 11 13 3/8 16 1/8 17 3/4 20 1/4 21 5/8 23 7/8 28 1/4 34 3/4
    B 2 1/8 2 1/8 2 1/4 2 1/2 2 3/4 3 3 3/4 4 1/4 5 5/8 7 1/4 7 1/2 8 8 3/8 8 3/4 12
    C N/A 1 1/8 2 1/2 3 7/16 4 1/2 5 3/8 7 1/2 9 1/2 11 3/4 12 14 1/2   16 5/16   18 1/4 22 5/8 28 11/16
    D N/A 5/32 5/8 15/16 1 11/32 1 3/4 2 1/2 3 3/8 4 1/8 4 1/8 4 3/8 5 1/8 6 8 1/2 11
    WT. (lbs) 4 5 1/2 7 1/2 13 1/2 17 1/2 26 1/2 50 70 108 170 225 280 390 590 1050
    ALSO AVAILABLE IN SIZES 36", 42", 48" & 54".
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    F91 - 125 LB. Cast Iron Silent Wafer Check Valve

    The F91-AP is recommended for use in liquid or gas service, where temperatures & pressures are relatively low. These valves are not recommended for use in sewage ejector piping nor are they suggested to be installed with reciprocating compressors or pumps.

    F91 - 125 LB. Cast Iron Silent Wafer Check Valve
    Silent Wafer Check Valve, Check Valve, Check valve au silent Check Valve, Check Valve
    PRESSURE-TEMPERATURE RATINGS
    WOG: 150 psi @ 100° F
    Size in. 1 1/2" 2" 2 1/2" 3" 4" 5" 6" 8" 10" 12"
    mm 38 50 65 80 100 125 150 200 250 300
    Face to Face 2 3/8 2 5/8 2 7/8 3 1/8 4 4 5/8 5 9/16 6 1/2 8 1/4 11 1/4
    Bolting 4 3/8 X 4 5/8 X 4 5/8 X 4 5/8 X 8 5/8 X 8 3/4 X 8 3/4 X 8 3/4 X 12 7/8 X 24 7/8 X
    5 1/4 5 3/4 6 6 1/2 7 3/4 8 1/2 9 1/2 10 3/4 13 14
    WT (lb) 4 5 1/4 8 10 17 27 39 86 159 337
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    F105 & F107 - Class 125 & Class 250 Cast Iron Body, Globe Type Check Valve

    Both models are effective either installed horizontally or vertically. However, if intended installation is vertical downward flow, please advise factory. In this case, a spring strong enough to support the weight of the disc and hold it to the seat must be provided.

    F105 & F107 - Class 125 & Class 250 Cast Iron Body, Globe Type Check Valve Globe Check Valve, Check Valve Globe style Check Valve, Check Valve
    PRESSURE - TEMPERATURE RATINGS
    F105-MAP WOG: 2" to 12" 200 psi @ 150° F
    WOG: 14" to 24" 150 psi @ 150° F
    F107-MAP WOG: 2" to 12" 500 psi @ 150° F
    WOG: 14" to 24" 300 psi @ 150° F
    Size in. 2" 2 1/2" 3" 4" 5" 6" 8" 10" 12" 14" 16" 18" 20" 24" 30"
      mm. 50 65 80 100 125 150 200 250 300 350 400 450 500 600 750
    A F105MAP 6 1/4 7 7 1/2 8 1/2 9  1/2 10 1/2 13.5 16 1/4 20 1/4 22 3/4 24 3/4 22 1/2 24 24 30
    F107MAP 6 3/4 7  5/8 8 1/4 9 1/8 10 3/8 11 3/8 14 17 20 7/8 23 3/8 25 1/2 28 30 1/2 36 -
    B F105MAP 6 7 7 1/2 9 10 11 13 1/2 16 19 21 23 1/2 25 27 1/2 32 38 3/4
    F107MAP 6 1/2 7  1/2 8 1/4 10 11 12 1/2 15 17 1/2 20 1/2 23 25 1/2 28 30 1/2 36 -
    C F105MAP 4 5/8 5  1/2 6 1/4 8 5/8 10 11 1/8 15 17 3/8 21 3/4 24 26 3/8 29 5/8 32 3/4 37 42 1/2
    F107MAP 4 7/8 5  3/4 6 5/8 8 7/8 10 3/8 11 1/2 15 17 7/8 22 1/8 24 1/4 26 7/8 30 33 1/4 37 -
    WT F105MAP 20 24 32 56 74 95 178 265 454 598 840 892 1140 1540 1980
    F107MAP 24 28 446 76 134 144 242 367 672 725 1000 1238 1775 2500 -

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    Pressure Drops for Check Valves

    Pressure Drop Curves for Check Valves


    Notes:

  • These charts are based on the flow of clean water at ambient temperature.
  • Consult our Engineering Department for pressure drop information for steam, gases or viscous fluids.