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Backflow-Prevention Inline Hydraulic Valves
Also known as check valves, these open to allow flow in one direction and close when flow stops or reverses.
Valves with a poppet have internal components that can handle any flow rates. The higher the flow rate of the hydraulic fluid coming into the valve, the lower the pressure the fluid is as it leaves the valve.
Brass valves have good corrosion resistance. 303 stainless steel valves are more corrosion resistant than brass valves.
NPTF (Dryseal) threads are compatible with NPT threads.
UN/UNF (SAE Straight) thread connections have straight threads and are also known as O-ring Boss fittings.
For technical drawings and 3-D models, click on a part number.
NPTF Female Inlet × NPTF Female Outlet—Ball Check Valve
NPTF — NPTF (Female)
Inlet Connection | Outlet Connection | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size  | Dash Size | Pipe Size | Dash Size | Max. Flow Rate, gpm | Flow Coefficient (Cv) | Max. Pressure, psi | Min. Opening Pressure, psi | Port-to-Port Lg. | Hex Wd. | Mounting Orientation | Temp. Range, °F | Each | |
Brass Body | |||||||||||||
| 1/8 | 02 | 1/8 | 02 | 1.5 | 0.23 | 2,000 | 2.5 | 1 1/2" | 11/16" | Any Position | -15° to 400° | 0000000 | 000000 |
| 1/4 | 04 | 1/4 | 04 | 3 | 0.54 | 2,000 | 2.5 | 2" | 7/8" | Any Position | -15° to 400° | 0000000 | 00000 |
| 1/4 | 04 | 1/4 | 04 | 6 | 1.47 | 2,000 | 2.5 | 2" | 3/4" | Any Position | -30° to 200° | 0000000 | 00000 |
| 3/8 | 06 | 3/8 | 06 | 5 | 0.83 | 2,000 | 2.5 | 2 1/4" | 1 1/16" | Any Position | -15° to 400° | 0000000 | 00000 |
| 3/8 | 06 | 3/8 | 06 | 10 | 3.3 | 2,000 | 2.5 | 2 1/2" | 1" | Any Position | -30° to 200° | 0000000 | 00000 |
| 1/2 | 08 | 1/2 | 08 | 8 | 1.47 | 2,000 | 2.5 | 2 3/4" | 1 5/16" | Any Position | -15° to 400° | 0000000 | 00000 |
| 1/2 | 08 | 1/2 | 08 | 12 | 3.6 | 2,000 | 2.5 | 2 7/8" | 1 1/8" | Any Position | -30° to 200° | 0000000 | 00000 |
| 3/4 | 12 | 3/4 | 12 | 12 | 1.9 | 2,000 | 2.5 | 3" | 1 5/8" | Any Position | -15° to 400° | 0000000 | 00000 |
| 3/4 | 12 | 3/4 | 12 | 20 | 5.41 | 2,000 | 2.5 | 3 1/4" | 1 3/8" | Any Position | -30° to 200° | 0000000 | 00000 |
Steel Body | |||||||||||||
| 1/8 | 02 | 1/8 | 02 | 1.5 | 0.23 | 5,000 | 2.5 | 1 1/2" | 11/16" | Any Position | -15° to 400° | 0000000 | 00000 |
| 1/4 | 04 | 1/4 | 04 | 3 | 0.54 | 5,000 | 2.5 | 2" | 7/8" | Any Position | -15° to 400° | 0000000 | 00000 |
| 1/4 | 04 | 1/4 | 04 | 6 | 1.47 | 5,000 | 2.5 | 2" | 3/4" | Any Position | -30° to 200° | 0000000 | 00000 |
| 3/8 | 06 | 3/8 | 06 | 5 | 0.83 | 5,000 | 2.5 | 2 1/4" | 1 1/16" | Any Position | -15° to 400° | 0000000 | 00000 |
| 3/8 | 06 | 3/8 | 06 | 10 | 3.3 | 5,000 | 2.5 | 2 1/2" | 1" | Any Position | -30° to 200° | 0000000 | 00000 |
| 1/2 | 08 | 1/2 | 08 | 8 | 1.47 | 5,000 | 2.5 | 2 3/4" | 1 5/16" | Any Position | -15° to 400° | 0000000 | 00000 |
| 1/2 | 08 | 1/2 | 08 | 12 | 3.6 | 5,000 | 2.5 | 2 7/8" | 1 1/8" | Any Position | -30° to 200° | 0000000 | 00000 |
| 3/4 | 12 | 3/4 | 12 | 12 | 1.9 | 5,000 | 2.5 | 3" | 1 5/8" | Any Position | -15° to 400° | 0000000 | 00000 |
| 3/4 | 12 | 3/4 | 12 | 20 | 5.41 | 5,000 | 2.5 | 3 1/4" | 1 3/8" | Any Position | -30° to 200° | 0000000 | 00000 |
303 Stainless Steel Body | |||||||||||||
| 1/8 | 02 | 1/8 | 02 | 1.5 | 0.23 | 5,000 | 2.5 | 1 1/2" | 11/16" | Any Position | -15° to 400° | 0000000 | 00000 |
| 1/4 | 04 | 1/4 | 04 | 3 | 0.54 | 5,000 | 2.5 | 2" | 7/8" | Any Position | -15° to 400° | 0000000 | 00000 |
| 1/4 | 04 | 1/4 | 04 | 6 | 1.47 | 5,000 | 2.5 | 2" | 3/4" | Any Position | -30° to 200° | 0000000 | 000000 |
| 3/8 | 06 | 3/8 | 06 | 5 | 0.83 | 5,000 | 2.5 | 2 1/4" | 1 1/16" | Any Position | -15° to 400° | 0000000 | 000000 |
| 3/8 | 06 | 3/8 | 06 | 10 | 3.3 | 5,000 | 2.5 | 2 1/2" | 1" | Any Position | -30° to 200° | 0000000 | 000000 |
| 1/2 | 08 | 1/2 | 08 | 8 | 1.47 | 5,000 | 2.5 | 2 3/4" | 1 5/16" | Any Position | -15° to 400° | 0000000 | 000000 |
| 1/2 | 08 | 1/2 | 08 | 12 | 3.6 | 5,000 | 2.5 | 2 7/8" | 1 1/8" | Any Position | -30° to 200° | 0000000 | 000000 |
| 3/4 | 12 | 3/4 | 12 | 20 | 5.41 | 5,000 | 2.5 | 3 1/4" | 1 3/8" | Any Position | -30° to 200° | 0000000 | 000000 |
NPTF Male Inlet × NPTF Male Outlet—Ball Check Valve
NPTF — NPTF (Male)
Inlet Connection | Outlet Connection | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Dash Size | Pipe Size | Dash Size | Max. Flow Rate, gpm | Flow Coefficient (Cv) | Max. Pressure, psi | Min. Opening Pressure, psi | Seal Material | Port-to-Port Lg. | Hex Wd. | Mounting Orientation | Temp. Range, °F | Each | |
Brass Body | ||||||||||||||
| 1/8 | 02 | 1/8 | 02 | 1 | 0.17 | 2,000 | 2.5 | __ | 1" | 7/16" | Any Position | -30° to 190° | 00000000 | 000000 |
| 1/8 | 02 | 1/8 | 02 | 1 | 0.17 | 2,000 | 2.5 | Buna-N Rubber | 1" | 7/16" | Any Position | -30° to 190° | 00000000 | 00000 |
| 1/4 | 04 | 1/4 | 04 | 2.5 | 0.56 | 2,000 | 2.5 | __ | 1 3/8" | 5/8" | Any Position | -30° to 190° | 00000000 | 00000 |
| 1/4 | 04 | 1/4 | 04 | 2.5 | 0.56 | 2,000 | 2.5 | Buna-N Rubber | 1 3/8" | 5/8" | Any Position | -30° to 190° | 00000000 | 00000 |
| 3/8 | 06 | 3/8 | 06 | 6 | 1.31 | 2,000 | 2.5 | __ | 1 5/8" | 3/4" | Any Position | -30° to 190° | 00000000 | 00000 |
| 3/8 | 06 | 3/8 | 06 | 6 | 1.31 | 2,000 | 2.5 | Buna-N Rubber | 1 5/8" | 3/4" | Any Position | -30° to 190° | 00000000 | 00000 |
| 1/2 | 08 | 1/2 | 08 | 10 | 2.71 | 2,000 | 2.5 | __ | 2 1/8" | 7/8" | Any Position | -30° to 190° | 00000000 | 00000 |
| 1/2 | 08 | 1/2 | 08 | 10 | 2.71 | 2,000 | 2.5 | Buna-N Rubber | 2 1/8" | 7/8" | Any Position | -30° to 190° | 00000000 | 00000 |
| 3/4 | 12 | 3/4 | 12 | 15 | 3.4 | 2,000 | 2.5 | Buna-N Rubber | 2 1/4" | 1 1/8" | Any Position | -30° to 190° | 00000000 | 000000 |
Steel Body | ||||||||||||||
| 1/4 | 04 | 1/4 | 04 | 2.5 | 0.56 | 3,000 | 2.5 | __ | 1 3/8" | 5/8" | Any Position | -30° to 190° | 00000000 | 00000 |
| 1/4 | 04 | 1/4 | 04 | 2.5 | 0.56 | 3,000 | 2.5 | Buna-N Rubber | 1 3/8" | 5/8" | Any Position | -30° to 190° | 00000000 | 00000 |
| 3/8 | 06 | 3/8 | 06 | 6 | 1.31 | 3,000 | 2.5 | __ | 1 5/8" | 3/4" | Any Position | -30° to 190° | 00000000 | 00000 |
| 3/8 | 06 | 3/8 | 06 | 6 | 1.31 | 3,000 | 2.5 | Buna-N Rubber | 1 5/8" | 3/4" | Any Position | -30° to 190° | 00000000 | 00000 |
| 1/2 | 08 | 1/2 | 08 | 10 | 2.71 | 3,000 | 2.5 | __ | 2 1/8" | 7/8" | Any Position | -30° to 190° | 00000000 | 00000 |
| 1/2 | 08 | 1/2 | 08 | 10 | 2.71 | 3,000 | 2.5 | Buna-N Rubber | 2 1/8" | 7/8" | Any Position | -30° to 190° | 00000000 | 00000 |
303 Stainless Steel Body | ||||||||||||||
| 1/4 | 04 | 1/4 | 04 | 2.5 | 0.56 | 3,000 | 2.5 | __ | 1 3/8" | 5/8" | Any Position | -30° to 190° | 00000000 | 00000 |
| 1/4 | 04 | 1/4 | 04 | 2.5 | 0.56 | 3,000 | 2.5 | Buna-N Rubber | 1 3/8" | 5/8" | Any Position | -30° to 190° | 00000000 | 00000 |
| 3/8 | 06 | 3/8 | 06 | 6 | 1.31 | 3,000 | 2.5 | Buna-N Rubber | 1 5/8" | 3/4" | Any Position | -30° to 190° | 00000000 | 000000 |
BSPT Female Inlet × BSPT Female Outlet—Ball Check Valve
BSPT — BSPT and BSPP — BSPP
Inlet Connection | Outlet Connection | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Dash Size | Pipe Size | Dash Size | Max. Flow Rate, gpm | Flow Coefficient (Cv) | Max. Pressure, psi | Min. Opening Pressure, psi | Port-to-Port Lg. | Hex Wd. | Mounting Orientation | Temp. Range, °F | Each | |
Steel Body | |||||||||||||
| 1/4 | 04 | 1/4 | 04 | 6 | 1.47 | 5,000 | 2.5 | 2" | 3/4" | Any Position | -30° to 200° | 000000 | 000000 |
| 3/8 | 06 | 3/8 | 06 | 10 | 3.3 | 5,000 | 2.5 | 2 1/2" | 1" | Any Position | -30° to 200° | 000000 | 00000 |
| 1/2 | 08 | 1/2 | 08 | 12 | 3.6 | 5,000 | 2.5 | 2 7/8" | 1 1/8" | Any Position | -30° to 200° | 000000 | 00000 |
| 3/4 | 12 | 3/4 | 12 | 20 | 5.41 | 5,000 | 2.5 | 3 1/4" | 1 3/8" | Any Position | -30° to 200° | 000000 | 00000 |
BSPP Female Inlet × BSPP Female Outlet—Ball Check Valve
BSPT — BSPT and BSPP — BSPP
Inlet Connection | Outlet Connection | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Dash Size | Pipe Size | Dash Size | Max. Flow Rate, gpm | Flow Coefficient (Cv) | Max. Pressure, psi | Min. Opening Pressure, psi | Port-to-Port Lg. | Hex Wd. | Mounting Orientation | Temp. Range, °F | Each | |
Steel Body | |||||||||||||
| 1/4 | 04 | 1/4 | 04 | 6 | 1.47 | 5,000 | 2.5 | 2" | 3/4" | Any Position | -30° to 200° | 000000 | 000000 |
| 3/8 | 06 | 3/8 | 06 | 10 | 3.3 | 5,000 | 2.5 | 2 1/2" | 1" | Any Position | -30° to 200° | 000000 | 00000 |
| 1/2 | 08 | 1/2 | 08 | 12 | 3.6 | 5,000 | 2.5 | 2 7/8" | 1 1/8" | Any Position | -30° to 200° | 000000 | 00000 |
| 3/4 | 12 | 3/4 | 12 | 20 | 5.41 | 5,000 | 2.5 | 3 1/4" | 1 3/8" | Any Position | -30° to 200° | 000000 | 00000 |
UN/UNF (SAE Straight) Male Inlet × UN/UNF (JIC) Male Outlet—Poppet Check Valve
UN/UNF (SAE Straight) — UN/UNF (JIC)
Inlet Connection | Outlet Connection | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Dash Size | Thread Size | Dash Size | Flared Angle | Max. Flow Rate | Flow Coefficient (Cv) | Max. Pressure, psi | Min. Opening Pressure, psi | Seal Material | Port-to-Port Lg. | Hex Wd. | Mounting Orientation | Temp. Range, °F | Each | |
Steel Body | |||||||||||||||
| 7/16"-20 | 04 | 7/16"-20 | 04 | 37° | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 1/4" | 9/16" | Any Position | -40° to 250° | 0000000 | 000000 |
| 9/16"-18 | 06 | 9/16"-18 | 06 | 37° | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 1/4" | 3/4" | Any Position | -40° to 250° | 0000000 | 00000 |
| 3/4"-16 | 08 | 3/4"-16 | 08 | 37° | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 5/8" | 7/8" | Any Position | -40° to 250° | 0000000 | 00000 |
| 7/8"-14 | 10 | 7/8"-14 | 10 | 37° | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 7/8" | 1" | Any Position | -40° to 250° | 0000000 | 000000 |
| 1 1/16"-12 | 12 | 1 1/16"-12 | 12 | 37° | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 2 1/8" | 1 1/4" | Any Position | -40° to 250° | 0000000 | 000000 |
| 1 5/16"-12 | 16 | 1 5/16"-12 | 16 | 37° | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 2 1/2" | 1 1/2" | Any Position | -40° to 250° | 0000000 | 000000 |
UN/UNF (JIC) Male Inlet × UN/UNF (SAE Straight) Male Outlet—Poppet Check Valve
UN/UNF (JIC) — UN/UNF (SAE Straight)
Inlet Connection | Outlet Connection | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Dash Size | Flared Angle | Thread Size | Dash Size | Max. Flow Rate | Flow Coefficient (Cv) | Max. Pressure, psi | Min. Opening Pressure, psi | Seal Material | Port-to-Port Lg. | Hex Wd. | Mounting Orientation | Temp. Range, °F | Each | |
Steel Body | |||||||||||||||
| 7/16"-20 | 04 | 37° | 7/16"-20 | 04 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 1/4" | 9/16" | Any Position | -40° to 250° | 0000000 | 000000 |
| 9/16"-18 | 06 | 37° | 9/16"-18 | 06 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 1/4" | 3/4" | Any Position | -40° to 250° | 0000000 | 00000 |
| 3/4"-16 | 08 | 37° | 3/4"-16 | 08 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 5/8" | 7/8" | Any Position | -40° to 250° | 0000000 | 00000 |
| 7/8"-14 | 10 | 37° | 7/8"-14 | 10 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 7/8" | 1" | Any Position | -40° to 250° | 0000000 | 000000 |
| 1 1/16"-12 | 12 | 37° | 1 1/16"-12 | 12 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 2 1/8" | 1 1/4" | Any Position | -40° to 250° | 0000000 | 000000 |
| 1 5/16"-12 | 16 | 37° | 1 5/16"-12 | 16 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 2 1/2" | 1 1/2" | Any Position | -40° to 250° | 0000000 | 000000 |
UN/UNF (JIC) Male Inlet × UN/UNF (JIC) Male Outlet—Poppet Check Valve
UN/UNF (JIC) — UN/UNF (JIC)
Inlet Connection | Outlet Connection | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Dash Size | Flared Angle | Thread Size | Dash Size | Flared Angle | Max. Flow Rate | Flow Coefficient (Cv) | Max. Pressure, psi | Min. Opening Pressure, psi | Seal Material | Port-to-Port Lg. | Hex Wd. | Mounting Orientation | Temp. Range, °F | Each | |
Steel Body | ||||||||||||||||
| 7/16"-20 | 04 | 37° | 7/16"-20 | 04 | 37° | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 1/2" | 9/16" | Any Position | -40° to 250° | 0000000 | 000000 |
| 9/16"-18 | 06 | 37° | 9/16"-18 | 06 | 37° | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 1/2" | 3/4" | Any Position | -40° to 250° | 0000000 | 00000 |
| 3/4"-16 | 08 | 37° | 3/4"-16 | 08 | 37° | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 7/8" | 7/8" | Any Position | -40° to 250° | 0000000 | 00000 |
| 7/8"-14 | 10 | 37° | 7/8"-14 | 10 | 37° | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 2" | 1" | Any Position | -40° to 250° | 0000000 | 000000 |
| 1 1/16"-12 | 12 | 37° | 1 1/16"-12 | 12 | 37° | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 2 1/2" | 1 1/4" | Any Position | -40° to 250° | 0000000 | 000000 |
| 1 5/16"-12 | 16 | 37° | 1 5/16"-12 | 16 | 37° | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 2 5/8" | 1 1/2" | Any Position | -40° to 250° | 0000000 | 000000 |
Backflow-Prevention Screw-In Hydraulic Valves
These valves open to allow flow in one direction and close when flow stops or reverses. Also known as check valves and cartridge valves, they screw into your mounting block.
For technical drawings and 3-D models, click on a part number.
Body—UN/UNF (SAE Straight) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deltrol Equivalent Model No. | Hydraforce Equivalent Model No. | Parker Equivalent Model No. | Thread Size | Dash Size | Max. Flow Rate, gpm | Flow Coefficient (Cv) | Max. Pressure, psi | Min. Opening Pressure, psi | O'all Ht. | Mounting Orientation | Each | |
Ball Check Valve | ||||||||||||
Black Anodized Aluminum Body | ||||||||||||
| DCV-080-B-N-2 | __ | __ | 3/4"-16 | 08 | 5 | Not Rated | 3,000 | 2 | 1 1/4" | Any Position | 0000000 | 000000 |
| DCV-080-B-N-5 | __ | __ | 3/4"-16 | 08 | 5 | Not Rated | 3,000 | 5 | 1 1/4" | Any Position | 0000000 | 00000 |
| DCV-080-B-N-10 | CV08-20-0-N-10 | __ | 3/4"-16 | 08 | 5 | Not Rated | 3,000 | 10 | 1 1/4" | Any Position | 0000000 | 00000 |
| DCV-080-B-N-25 | CV08-20-0-N-25 | __ | 3/4"-16 | 08 | 5 | Not Rated | 3,000 | 25 | 1 1/4" | Any Position | 0000000 | 00000 |
| DCV-100-B-N-5 | CV10-20-0-N-05 | __ | 7/8"-14 | 10 | 20 | Not Rated | 3,000 | 5 | 1 5/8" | Any Position | 0000000 | 00000 |
| DCV-100-B-N-15 | CV10-20-0-N-15 | D04B2-1.0-N | 7/8"-14 | 10 | 20 | Not Rated | 3,000 | 15 | 1 5/8" | Any Position | 0000000 | 00000 |
| DCV-100-B-N-30 | CV10-20-0-N-30 | __ | 7/8"-14 | 10 | 20 | Not Rated | 3,000 | 30 | 1 5/8" | Any Position | 0000000 | 00000 |
| DCV-100-B-N-60 | __ | D04B2-2.1-N | 7/8"-14 | 10 | 20 | Not Rated | 3,000 | 60 | 1 5/8" | Any Position | 0000000 | 00000 |