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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.
UN/UNF (SAE) 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.
UN/UNF (SAE) Male Inlet × UN/UNF (JIC) Male Outlet—Poppet Check Valve
UN/UNF (SAE) — 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 | 00000 |
| 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 | 00000 |
| 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 |
| 1 5/8"-12 | 20 | 1 5/8"-12 | 20 | 37° | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 2 5/8" | 1 7/8" | Any Position | -40° to 250° | 0000000 | 000000 |
UN/UNF (JIC) Male Inlet × UN/UNF (SAE) Male Outlet—Poppet Check Valve
UN/UNF (JIC) — UN/UNF (SAE)
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 | 00000 |
| 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 | 00000 |
| 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 |
| 1 5/8"-12 | 20 | 37° | 1 5/8"-12 | 20 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 2 5/8" | 1 7/8" | 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 | 00000 |
| 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 | 00000 |
| 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 |
| 1 5/8"-12 | 20 | 37° | 1 5/8"-12 | 20 | 37° | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 2 3/4" | 1 7/8" | Any Position | -40° to 250° | 0000000 | 000000 |
The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)