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CTB Female Pipe Style Check Valves CTB Female Pipe Style

Check Valves

Product Details
CTB Female Pipe Style - CTB Female Pipe Style Check Valves

Found under the following brands: Conrader
Model: CTB Female Pipe Style

Click 'More Info' for available sizes

Description:

The CTB has a female inlet and a male outlet. Inlets range from 1/4" to 1-1/2"(FPT). Outlets range from 1/2" to 1-1/2" (MPT). Has optional 1/8" unloader port on hex section. Check valves control the flow of air into the receiver tank. When the compressor reaches unload pressure the check valves closes, preventing the backflow of air from the receiver tank into the discharge supply line. To figure out what size you have, measure the OD of the fitting that fits into the check valve.

This is a handy chart below.
Check Valve
Inch Size
Dash Size
Nominal Thread Size
Male Thread
Outside Diameter
Female Thread
Inside Diameter
1/8 -02 1/8-27 13/32" (.41) 3/8" (.38)
1/4 -04 1/4-18 17/32" (.54) 1/2" (.49)
3/8 -06 3/8-18 11/16" (.68) 5/8" (.63)
1/2 -08 1/2-14 27/32" (.84) 25/32" (.77)
3/4 -12 3/4-14 1 1/16" (1.05) 1" (.98)
1 -16 1-11.5 1 5/16" (1.32) 1 1/4" (1.24)
1 1/4 -20 1 1/4-11.5 1 21/32" (1.66) 1 19/32" (1.58)
1 1/2 -24 1 1/2-11.5 1 29/32" (1.90) 1 13/16" (1.82)
2 -32 2-11.5 2 3/8" (2.38) 2 5/16" (2.30)


Where is my check valve located?


Extra Details

This was a new check valve installed less than a year ago. Due to the tanks not being drained, this check valve failed after less than a year.

 

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Displaying 15 products

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Reference Item Please Note! Price Product Image Select Qty Status
00000Check Valve1/2" FPT x 1/2" MPT$23.30
$16.95
CTB1212 - Check Valve-
00000Check Valve3/4" FPT X 3/4" MPT

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$29.82CTB3434 - Check Valve-
00000Check Valve 1 1/2" Fpt X 1 1/2" Mpt

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$161.00CTB112112 - Check Valve 1 1/2" Fpt X 1 1/2" Mpt-
00000Check Valve 1 1/4" Fpt X 1 1/4" Mpt

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$88.25CTB114114 - Check Valve 1 1/4" Fpt X 1 1/4" Mpt-
00000Check Valve 1" Fpt X 1 1/4" Mpt

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$88.25-
00000Check Valve 1" Fpt X 1" Mpt

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$48.88CTB11 - Check Valve 1" Fpt X 1" Mpt-
00000Check Valve 1/2" Fpt X 1" Mpt

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$20.22CTB121 - Check Valve 1/2" Fpt X 1" Mpt-
00000Check Valve 1/2" Fpt X 3/4" Mpt

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$26.66CTB1234 - Check Valve 1/2" Fpt X 3/4" Mpt-
00000Check Valve 1/4" Fpt X 1/2" Mpt

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$18.42CTB1412 - Check Valve 1/4" Fpt X 1/2" Mpt-
Reference Item Please Note!Price Product Image
00000Check Valve 3/4" Fpt X 1 1/2" Mpt

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$178.46CTB34112 - Check Valve 3/4" Fpt X 1 1/2" Mpt-
00000Check Valve 3/4" Fpt X 1" Mpt

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$41.86CTB341 - Check Valve 3/4" Fpt X 1" Mpt-
00000Check Valve 3/8" Fpt X 1/2" Mpt

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$18.42CTB3812 - Check Valve 3/8" Fpt X 1/2" Mpt-
00000Check Valve 3/8" Fpt X 1/2" Mpt with Cold Start ValveNOTE: check valve for serial numbers without the prefix (A).

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$33.77CTB3812-P1-SU3 - Check Valve 3/8" Fpt X 1/2" Mpt with Cold Start Valve-
00000Quick Release

1/8" NPT x 1/4" nylon tube. This allows 1/4" nylon tubing to push to fit into this fitting. The 1/8" MPT threads screw into the unloader area of the c

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This part is available in the following kits:

  • Pressure Switch kit - QR
  • $6.95QR - Quick Release-
    0CompConnect, Male Adapter1/8" MPT x 1/4" compression adapter for the unloader (bleeder line).

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    $3.8668-4-2 - Connect, Male Adapter-

    Displaying 15 products

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