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Maximum Pressure Maximum Pressure |
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Valve Function Valve Function |
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Maximum Temperature Maximum Temperature |
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More
With a shorter end-to-end length than other check valves, these fit in tight spaces. They open to allow flow in one direction and close when flow stops or reverses.
303 stainless steel valves are more corrosion resistant than brass valves.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
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.
UN/UNF (ORFS) threads are also known as O-ring face seal threads.
For technical drawings and 3-D models, click on a part number.
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 |
Inlet Connection | Outlet Connection | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size | Dash Size | 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 | 9/16"-18 | 04 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 1/8" | 5/8" | Any Position | -40° to 250° | 0000000 | 000000 |
9/16"-18 | 06 | 11/16"-16 | 06 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 1/8" | 3/4" | Any Position | -40° to 250° | 0000000 | 00000 |
3/4"-16 | 08 | 13/16"-16 | 08 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 3/8" | 7/8" | Any Position | -40° to 250° | 0000000 | 000000 |
7/8"-14 | 10 | 1"-14 | 10 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 5/8" | 1 1/8" | Any Position | -40° to 250° | 0000000 | 000000 |
1 1/16"-12 | 12 | 1 3/16"-12 | 12 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 7/8" | 1 1/4" | Any Position | -40° to 250° | 0000000 | 000000 |
1 5/16"-12 | 16 | 1 7/16"-12 | 16 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 2" | 1 1/2" | Any Position | -40° to 250° | 0000000 | 000000 |
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 |
Inlet Connection | Outlet Connection | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size | Dash Size | 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 | ||||||||||||||
9/16"-18 | 04 | 7/16"-20 | 04 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 1/8" | 5/8" | Any Position | -40° to 250° | 0000000 | 000000 |
11/16"-16 | 06 | 9/16"-18 | 06 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 1/8" | 3/4" | Any Position | -40° to 250° | 0000000 | 00000 |
13/16"-16 | 08 | 3/4"-16 | 08 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 3/8" | 7/8" | Any Position | -40° to 250° | 0000000 | 000000 |
1"-14 | 10 | 7/8"-14 | 10 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 5/8" | 1 1/8" | Any Position | -40° to 250° | 0000000 | 000000 |
1 3/16"-12 | 12 | 1 1/16"-12 | 12 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 1 7/8" | 1 1/4" | Any Position | -40° to 250° | 0000000 | 000000 |
1 7/16"-12 | 16 | 1 5/16"-12 | 16 | Not Rated | Not Rated | 5,000 | 5 | Buna-N Rubber | 2" | 1 1/2" | Any Position | -40° to 250° | 0000000 | 000000 |
Stop the reverse flow of gas in your regulator. Check valves do not stop flashbacks.
Stop the reverse flow of gas in your torch. Check valves do not stop flashbacks.
Max. Pressure, psi | Male Hose Connection | Female Hose Connection | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Oxygen | Acetylene | Hydrogen | Propane | Thread Direction | Thread Size | Thread Type | Thread Direction | Thread Size | Thread Type | Material | Each | |
125 | __ | __ | __ | Right Hand | 3/8"-24 | UNF | Right Hand | 3/8"-24 | UNF | Brass | 000000 | 000000 |
125 | __ | __ | __ | Right Hand | 9/16"-18 | UNF | Right Hand | 9/16"-18 | UNF | Brass | 000000 | 0000 |
__ | 50 | 50 | 50 | Left Hand | 3/8"-24 | UNF | Left Hand | 3/8"-24 | UNF | Brass | 000000 | 00000 |
__ | 50 | 50 | 50 | Left Hand | 9/16"-18 | UNF | Left Hand | 9/16"-18 | UNF | Brass | 000000 | 0000 |
These arresters attach directly to torches that cut steel up to 8" thick. They extinguish flames and have a check valve to stop reverse gas flow. They are reusable; resetting is not required after flashback.
Arresters with right-hand threads are for use with oxygen; arresters with left-hand threads are for use with acetylene, hydrogen, and propane.
Male Hose Connection | Female Hose Connection | |||||||
---|---|---|---|---|---|---|---|---|
Max. Pressure for Oxygen, psi | Thread Size | Thread Type | Thread Size | Thread Type | Material | Specifications Met | Each | |
143 | 9/16"-18 | UNF | 9/16"-18 | UNF | Brass | European Safety Specification EN730, ISO 5175 Class 1 | 00000000 | 000000 |
Max. Pressure, psi | Male Hose Connection | Female Hose Connection | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Acetylene | Hydrogen | Propane | Thread Size | Thread Type | Thread Size | Thread Type | Material | Specifications Met | Each | |
15 | 50 | 50 | 9/16"-18 | UNF | 9/16"-18 | UNF | Brass | European Safety Specification EN730, ISO 5175 Class 1 | 00000000 | 000000 |
Max. Pressure, psi | Male Hose Connection | Female Hose Connection | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Oxygen | Acetylene | Hydrogen | Propane | Thread Size | Thread Type | Thread Size | Thread Type | Material | Specifications Met | Pair | |
143 | 15 | 50 | 50 | 9/16"-18 | UNF | 9/16"-18 | UNF | Brass | European Safety Specification EN730, ISO 5175 Class 1 | 00000000 | 000000 |
Attach these arresters to the outlet connection of a regulator on a torch that cuts steel up to 11" thick. Arresters extinguish flames and have a check valve to stop reverse gas flow. They are reusable; resetting is not required after flashback.
Arresters with right-hand threads are for use with oxygen; arresters with left-hand threads are for use with acetylene, hydrogen, and propane.
Male Hose Connection | Female Hose Connection | |||||||
---|---|---|---|---|---|---|---|---|
Max. Pressure for Oxygen, psi | Thread Size | Thread Type | Thread Size | Thread Type | Material | Specifications Met | Each | |
143 | 9/16"-18 | UNF | 9/16"-18 | UNF | Brass | European Safety Specification EN730, ISO 5175 Class 1 | 00000000 | 000000 |
Max. Pressure, psi | Male Hose Connection | Female Hose Connection | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Acetylene | Hydrogen | Propane | Thread Size | Thread Type | Thread Size | Thread Type | Material | Specifications Met | Each | |
15 | 50 | 50 | 9/16"-18 | UNF | 9/16"-18 | UNF | Brass | European Safety Specification EN730, ISO 5175 Class 1 | 00000000 | 000000 |
Max. Pressure, psi | Male Hose Connection | Female Hose Connection | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Oxygen | Acetylene | Hydrogen | Propane | Thread Size | Thread Type | Thread Size | Thread Type | Material | Specifications Met | Pair | |
143 | 15 | 50 | 50 | 9/16"-18 | UNF | 9/16"-18 | UNF | Brass | European Safety Specification EN730, ISO 5175 Class 1 | 00000000 | 000000 |