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Check Valve


Centek’s line of exhaust systems check valves are made of the same fiberglass and fire retardant resins used to produce Vernatube, the UL listed tubing line. These fittings are lightweight, strong, non-corroding, and durable. Fittings are installed easily and their outside dimensions are compatible with tubing and approved marine rubber exhaust hoses.

  A B C D
  NOM. O.D. I/O LENGTH LENGTH DIAMETER
Part # INCHES MM INCHES MM INCHES MM INCHES MM
1200403 1.5 38 2 51 11.79 299 4.34 110
1200263 1.63 41 1.5 38 11.79 299 4.34 110
1200398 1.88 48 1.88 48 9 229 4.34 110
1200328 2 51 1.5 38 8.37 213 4.34 110
1200426 2.25 57 3.19 81 16.13 410 5.58 142
1200449 2.38 60 3.31 84 18.69 475 7.06 179
1200307 2.5 64 3 76 16.13 410 5.58 142
1200274 3 76 3.5 89 18.66 474 7.06 179
1200411 3.5 89 3.5 89 20.3 516 8.09 205
1200369 4 102 3.5 89 21 533 9.06 230
1200479 4.5 114 5 127 24.63 626 11.15 283
1200377 5 127 4.38 111 24.25 616 11.15 283
1200386 6 152 5 127 26.2 665 12.2 310
Displaying products 1 - 44 of 44 results
unavailable
1200263 Check Valve 1.63
List Price: $133.97
Your Price: $112.73
You Save: $21.24 (16 %)
1200263 Check Valve 1.63
Check Valve
unavailable
1200265 Exhaust Reducer Coupling 4 to 6
List Price: $103.10
Your Price: $86.73
You Save: $16.37 (16 %)
1200265 Exhaust Reducer Coupling  4 to 6
Exhaust Reducer Coupling
unavailable
1200266 Exhaust Reducer Coupling 1.63 to 2
Your Price: $30.23
1200266 Exhaust Reducer Coupling 1.63 to 2
Exhaust Reducer Coupling
1200274 Check Valve - 3"
List Price: $273.98
Your Price: $230.49
You Save: $43.49 (16 %)
1200274 Check Valve - 3"
Centek Check Valve
unavailable
1200307 Check Valve 2.5
List Price: $180.11
Your Price: $151.52
You Save: $28.59 (16 %)
1200307 Check Valve 2.5
Check Valve
unavailable
1200309 Exhaust Reducer Coupling 1.88 to 2
List Price: $98.77
Your Price: $83.10
You Save: $15.67 (16 %)
1200309 Exhaust Reducer Coupling 1.88 to 2
Exhaust Reducer Coupling
unavailable
1200318 Exhaust Reducer Coupling 2.38 to 2.88
Your Price: $42.00
1200318 Exhaust Reducer Coupling 2.38 to 2.88
Exhaust Reducer Coupling
unavailable
1200336 Exhaust Reducer Coupling 2 to 3.5
Your Price: $42.96
1200336 Exhaust Reducer Coupling 2 to 3.5
Exhaust Reducer Coupling
1200369 Check Valve - 4"
List Price: $323.36
Your Price: $272.03
You Save: $51.33 (16 %)
1200369 Check Valve - 4"
Centek Check Valve
unavailable
1200371 Exhaust Reducer Coupling 2 to 2.88
Your Price: $38.43
1200371 Exhaust Reducer Coupling 2 to 2.88
Exhaust Reducer Coupling
1200377 Check Valve - 5"
List Price: $523.48
Your Price: $440.40
You Save: $83.08 (16 %)
1200377 Check Valve - 5"
Centek Check Valve
1200386 Check Valve 6"
List Price: $721.10
Your Price: $606.66
You Save: $114.44 (16 %)
1200386 Check Valve 6"
Centek Inline Check Valve 6"
unavailable
1200390 Exhaust Reducer Coupling 1.5 to 1.63
List Price: $96.54
Your Price: $81.21
You Save: $15.33 (16 %)
1200390 Exhaust Reducer Coupling 1.5 to 1.63
Exhaust Reducer Coupling
unavailable
1200392 Exhaust Reducer Coupling 6.69 to 8
List Price: $231.35
Your Price: $194.63
You Save: $36.72 (16 %)
1200392 Exhaust Reducer Coupling 6.69 to 8
Exhaust Reducer Coupling
unavailable
1200394 Exhaust Reducer Coupling 1.75 to 2
Your Price: $33.41
1200394 Exhaust Reducer Coupling 1.75 to 2
Exhaust Reducer Coupling
unavailable
1200396 Exhaust Reducer Coupling 2 to 2.38
Your Price: $35.00
1200396 Exhaust Reducer Coupling 2 to 2.38
Exhaust Reducer Coupling
unavailable
1200398 Check Valve 1.88
List Price: $148.29
Your Price: $124.74
You Save: $23.55 (16 %)
1200398 Check Valve 1.88
Check Valve
unavailable
1200400 Exhaust Reducer Coupling 2 to 4
Your Price: $50.60
1200400 Exhaust Reducer Coupling 2 to 4
Exhaust Reducer Coupling
unavailable
1200403 Check Valve 1.5
List Price: $123.78
Your Price: $104.13
You Save: $19.65 (16 %)
1200403 Check Valve 1.5
Check Valve
unavailable
1200410 Exhaust Reducer Coupling 1.5 to 2
Your Price: $35.64
1200410 Exhaust Reducer Coupling 1.5 to 2
Exhaust Reducer Coupling
unavailable
1200411 Check Valve 3.5
List Price: $323.36
Your Price: $272.03
You Save: $51.33 (16 %)
1200411 Check Valve 3.5
Check Valve
unavailable
1200425 Exhaust Reducer Coupling 10 to 12
List Price: $391.40
Your Price: $329.28
You Save: $62.12 (16 %)
1200425 Exhaust Reducer Coupling 10 to 12
Exhaust Reducer Coupling
unavailable
1200426 Check Valve 2.25
List Price: $257.12
Your Price: $216.30
You Save: $40.82 (16 %)
1200426 Check Valve 2.25
Check Valve
unavailable
1200430 Exhaust Reducer Coupling 2 to 2.25
Your Price: $34.68
1200430 Exhaust Reducer Coupling 2 to 2.25
Exhaust Reducer Coupling
unavailable
1200431 Exhaust Reducer Coupling 2.25 to 2.38
Your Price: $35.32
1200431 Exhaust Reducer Coupling 2.25 to 2.38
Exhaust Reducer Coupling
unavailable
1200435 Exhaust Reducer Coupling 1.5 to 1.75
Your Price: $32.78
1200435 Exhaust Reducer Coupling 1.5 to 1.75
Exhaust Reducer Coupling
unavailable
1200447 Exhaust Reducer Coupling 1.63 to 2.38
Your Price: $55.79
1200447 Exhaust Reducer Coupling 1.63 to 2.38
Exhaust Reducer Coupling
unavailable
1200449 Check Valve 2.38
List Price: $249.48
Your Price: $209.88
You Save: $39.60 (16 %)
1200449 Check Valve 2.38
Check Valve
unavailable
1200451 Exhaust Reducer Coupling 2.38 to 3
Your Price: $41.05
1200451 Exhaust Reducer Coupling 2.38 to 3
Exhaust Reducer Coupling
unavailable
1200479 Check Valve 4.5
List Price: $487.18
Your Price: $409.86
You Save: $77.32 (16 %)
1200479 Check Valve 4.5
Check Valve
unavailable
1200491 Exhaust Reducer Coupling 5 to 8
List Price: $222.38
Your Price: $187.08
You Save: $35.30 (16 %)
1200491 Exhaust Reducer Coupling 5 to 8
Exhaust Reducer Coupling
unavailable
1200503 Exhaust Reducer Coupling 1.5 to 1.88
Your Price: $34.37
1200503 Exhaust Reducer Coupling 1.5 to 1.88
Exhaust Reducer Coupling
unavailable
1200505 Exhaust Reducer Coupling 1.75 to 2.38
Your Price: $34.37
1200505 Exhaust Reducer Coupling 1.75 to 2.38
Exhaust Reducer Coupling
unavailable
1200506 Exhaust Reducer Coupling 1.63 to 2.5
Your Price: $56.01
1200506 Exhaust Reducer Coupling 1.63 to 2.5
Exhaust Reducer Coupling
unavailable
1200529 Exhaust Reducer Coupling 2.38 to 2.5
Your Price: $38.82
1200529 Exhaust Reducer Coupling 2.38 to 2.5
Exhaust Reducer Coupling
unavailable
1200532 Exhaust Reducer Coupling 1.25 to 1.63
Your Price: $28.96
1200532 Exhaust Reducer Coupling 1.25 to 1.63
Exhaust Reducer Coupling
unavailable
1200533 Exhaust Reducer Coupling 1.63 to 1.75
Your Price: $34.68
1200533 Exhaust Reducer Coupling 1.63 to 1.75
Exhaust Reducer Coupling
unavailable
1200534 Exhaust Reducer Coupling 8 to 8.63
List Price: $295.62
Your Price: $248.70
You Save: $46.92 (16 %)
1200534 Exhaust Reducer Coupling 8 to 8.63
Exhaust Reducer Coupling
unavailable
1200569 Exhaust Reducer Coupling 2.25 to 3
Your Price: $40.73
1200569 Exhaust Reducer Coupling 2.25 to 3
Exhaust Reducer Coupling
unavailable
1200603 Exhaust Reducer Coupling 6 to 8.63
List Price: $292.75
Your Price: $246.29
You Save: $46.46 (16 %)
1200603 Exhaust Reducer Coupling 6 to 8.63
Exhaust Reducer Coupling
unavailable
1200639 Exhaust Reducer Coupling 3 to 5
List Price: $81.78
Your Price: $68.79
You Save: $12.99 (16 %)
1200639 Exhaust Reducer Coupling 3 to 5
Exhaust Reducer Coupling
1200695 Check Valve 8" Inlet/Outlet NLA
List Price: $678.75
Your Price: No Longer Available.
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1200695 Check Valve 8" Inlet/Outlet NLA
Centek Check Valve
COR 11100 Marine Wet Exhaust Flapper Retro Fit Kit 4"
List Price: $212.00
Your Price: $142.80
You Save: $69.20 (33 %)
COR 11100 Marine Wet Exhaust Flapper Retro Fit Kit 4"
Marine Wet Exhaust Flapper Retro Fit Kit 4"
MUF 1200328 Check Valve 2"
List Price: $134.92
Your Price: $113.51
You Save: $21.41 (16 %)
MUF 1200328 Check Valve 2"
Centek Marine Wet Exhaust Check Valve 2" Inlet/Outlet
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