Check Valves - Female Pipe Style CTB style

Check Valves - Female Pipe Style

Check Valves - Female Pipe Style

Model/Part Number: CTB style

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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?

 

Requirements:

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

Reference Item Important Info! Old Part # Part or Model Price Image Select Qty Status
00000Check Valve 1 1/2" Fpt X 1 1/2" MptCTB112112$161.00Check Valve 1 1/2" Fpt X 1 1/2" Mpt-
00000Check Valve 1 1/4" Fpt X 1 1/4" MptCTB114114$88.25Check Valve 1 1/4" Fpt X 1 1/4" Mpt-
00000Check Valve 1" Fpt X 1 1/4" MptCTB1114$88.25-
00000Check Valve 1" Fpt X 1" MptCTB11$48.88Check Valve 1" Fpt X 1" Mpt-
00000Check Valve 1/2" Fpt X 1" MptCTB121$20.22Check Valve 1/2" Fpt X 1" Mpt-
00000Check Valve 1/2" Fpt X 1/2" MptCTB1212$23.30Check Valve 1/2" Fpt X 1/2" Mpt-
00000Check Valve 1/2" Fpt X 3/4" MptCTB1234$26.66Check Valve 1/2" Fpt X 3/4" Mpt-
00000Check Valve 1/4" Fpt X 1/2" MptCTB1412$18.42Check Valve 1/4" Fpt X 1/2" Mpt-
00000Check Valve 3/4" Fpt X 1 1/2" MptCTB34112$178.46Check Valve 3/4" Fpt X 1 1/2" Mpt-
Reference Item Important Info! Old Part # Part or Model Price Image
00000Check Valve 3/4" Fpt X 1" MptCTB341$41.86-
00000Check Valve 3/4" Fpt X 3/4" MptCTB3434$29.82Check Valve 3/4" Fpt X 3/4" Mpt-
00000Check Valve 3/8" Fpt X 1/2" MptCTB3812$18.42Check 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).CTB3812-P1-SU3$33.77Check Valve 3/8" Fpt X 1/2" Mpt with Cold Start Valve-
00000Tube FttgQR$6.95Tube Fttg-
0CompConnect, Male Adapter (068-0002)68-4-2$3.86Connect, Male Adapter (068-0002)-

Displaying 15 products

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