In-tank check valves are used in air compressor systems to control airflow between the compressor pump and the air receiver tank. They help prevent backflow and maintain system pressure during operation and shutdown. These valves are designed for reliable performance and compatibility with a wide range of compressor tank and control configurations.

3/4" FNPT  X 1" MNPT IN-TANK CHECK VALVE, NO UNLOADER PORT

1/2" FNPT X 3/4" MNPT IN-TANK CHECK VALVE, NO UNLOADER PORT

1/2" FNPT X 1/2" MNPT IN-TANK CHECK VALVE, NO UNLOADER PORT

1" FNPT X 1" MNPT IN-TANK CHECK VALVE, NO UNLOADER PORT

3/4" FNPT X 3/4" MNPT IN-TANK CHECK VALVE, NO UNLOADER PORT

1/2" FNPT X 3/4" MNPT, DOUBLE TAPPED 1/8" PORTS, ONE PIECE IN-TANK CHECK VALVE

1-1/2" FNPT X 1-1/2" MNPT ONE PIECE IN-TANK CHECK VALVE

1" FNPT X 1" MNPT ONE PIECE IN-TANK CHECK VALVE

3/4" FNPT X 3/4" MNPT,  DOUBLE TAPPED 1/8" PORTS, ONE PIECE IN-TANK CHECK VALVE

3/8" FNPT X 3/8" MNPT ONE PIECE IN-TANK CHECK VALVE

1-1/4" FNPT X 1-1/4" MNPT ONE PIECE IN-TANK CHECK VALVE

3/8" FNPT X 1/2" MNPT, DOUBLE TAPPED 1/8" PORTS, ONE PIECE IN-TANK CHECK VALVE

3/4" FNPT X 1" MNPT ONE PIECE IN-TANK CHECK VALVE

1/2" FNPT X 1/2" MNPT, DOUBLE TAPPED 1/4" x  1/8" PORTS, ONE PIECE IN-TANK CHECK VALVE

1" FNPT X 1" MNPT,  DOUBLE TAPPED 1/8" PORTS, ONE PIECE IN-TANK CHECK VALVE

1/2" FNPT X 1/2" MNPT ONE PIECE IN-TANK CHECK VALVE

1/2" FNPT X 3/4" MNPT ONE PIECE IN-TANK CHECK VALVE

1/4" FNPT X 1/2" MNPT ONE PIECE IN-TANK CHECK VALVE

3/4" FNPT X 3/4" MNPT ONE PIECE IN-TANK CHECK VALVE

1" FNPT X 1" MNPT, P2 ONE PIECE IN-TANK CHECK VALVE

3/4" FNPT X 3/4" MNPT, DOUBLE TAPPED 1/4" x  1/8" PORTS, ONE PIECE IN-TANK CHECK VALVE

1/2" FNPT X 1" MNPT ONE PIECE IN-TANK CHECK VALVE

3/8" FNPT X 1/2" MNPT ONE PIECE IN-TANK CHECK VALVE

1/4" FNPT X 1/2" MNPT TWO PIECE IN-TANK CHECK VALVE

3/4" FNPT X 3/4" MNPT TWO PIECE IN-TANK CHECK VALVE

3/4" FNPT X 1-1/2" MNPT TWO PIECE IN-TANK CHECK VALVE

1/2" FNPT X 1/2" MNPT TWO PIECE IN-TANK CHECK VALVE

3/8" FNPT X 3/8" MNPT TWO PIECE IN-TANK CHECK VALVE

1-1/4" FNPT X 1-1/4" MNPT TWO PIECE IN-TANK CHECK VALVE

1/2" FNPT X 3/4" MNPT TWO PIECE IN-TANK CHECK VALVE

1" FNPT X 1" MNPT TWO PIECE IN-TANK CHECK VALVE

1-1/2" FNPT X 1-1/2" MNPT TWO PIECE IN-TANK CHECK VALVE

1" FNPT X 1-1/4" MNPT TWO PIECE IN-TANK CHECK VALVE

3/8" FNPT X 1/2" MNPT TWO PIECE IN-TANK CHECK VALVE

1/2" FNPT X 1" MNPT TWO PIECE IN-TANK CHECK VALVE

3/4" FNPT X 1" MNPT TWO PIECE IN-TANK CHECK VALVE

3/8" TUBE X 1/2" MNPT IN-TANK 90° CHECK VALVE WITH 1/8" UNLOADER PORT

3/8" TUBE X 3/4" MNPT IN-TANK 90° CHECK VALVE WITH 1/8" UNLOADER PORT

1/2" TUBE X 1/2" MNPT IN-TANK 90° CHECK VALVE

3/8" TUBE X 1/2" MNPT IN-TANK 90° CHECK VALVE WITH 1/8" UNLOADER PORT & COLD START VALVE

1/2" TUBE X 1/2" MNPT IN-TANK 90° CHECK VALVE WITH 1/8" UNLOADER PORT

1/2" TUBE X 3/4" MNPT,  DOUBLE TAPPED 1/8" PORTS, ONE PIECE IN-TANK CHECK VALVE

3/8" TUBE X 1/2" MNPT,  DOUBLE TAPPED 1/8" PORTS, ONE PIECE IN-TANK CHECK VALVE

3/4" TUBE X 3/4" MNPT ONE PIECE IN-TANK CHECK VALVE

3/8" TUBE X 3/8" MNPT ONE PIECE IN-TANK CHECK VALVE

1/2" TUBE X 1/2" MNPT ONE PIECE IN-TANK CHECK VALVE

3/8" TUBE X 1/2" MNPT ONE PIECE IN-TANK CHECK VALVE

3/4" TUBE X 3/4" MNPT,  DOUBLE TAPPED 1/8" PORTS, ONE PIECE IN-TANK CHECK VALVE

5/16" TUBE X 1/2" MNPT ONE PIECE IN-TANK CHECK VALVE

1/2" TUBE X 3/8" MNPT ONE PIECE IN-TANK CHECK VALVE

3/4" TUBE X 1" MNPT ONE PIECE IN-TANK CHECK VALVE

1/2" TUBE X 3/4" MNPT ONE PIECE IN-TANK CHECK VALVE

1/2" TUBE X 1/2" MNPT,  DOUBLE TAPPED 1/8" PORTS, ONE PIECE IN-TANK CHECK VALVE

3/8" TUBE X 1/2" MNPT TWO PIECE IN-TANK CHECK VALVE

3/4" TUBE X 3/4" MNPT TWO PIECE IN-TANK CHECK VALVE

3/4" TUBE X 1" MNPT TWO PIECE IN-TANK CHECK VALVE

1/2" TUBE X 1/2" MNPT TWO PIECE IN-TANK CHECK VALVE

3/4" TUBE X 1/2" MNPT TWO PIECE IN-TANK CHECK VALVE

5/8" TUBE X 1/2" MNPT TWO PIECE IN-TANK CHECK VALVE

1/2" TUBE X 3/4" MNPT TWO PIECE IN-TANK CHECK VALVE

5/16" TUBE X 1/2" MNPT TWO PIECE IN-TANK CHECK VALVE

CTG5834 replaces IR models 85582229 & 32499766

5/8" INV FLARE X 3/4" MNPT, DOUBLE TAPPED 1/4" FNPT X 1/4" INV FLARE IN-TANK CHECK VALVES

CTG3434 replaces IR models 855855286 & 54368154

3/4" INV FLARE X 3/4" MNPT, DOUBLE TAPPED 1/4" FNPT X 1/4" INV FLARE IN-TANK CHECK VALVES

CTG1212 replaces IR models 56269590 & 32281735

1/2" INV FLARE X 1/2" MNPT, DOUBLE TAPPED 1/8" FNPT X 1/4" INV FLARE IN-TANK CHECK VALVES

In Tank Check Valves

Conrader in-tank check valves for reliable compressor tank isolation and backflow prevention. Find the right configuration for your pneumatic system.

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