Reverse Flow Check Valves

For torch and regulator applications, Western Check Valves guard against danger caused by plugged tips, over pressurizing or incorrect startup procedures. Proper Check Valve installation helps prevent accidents caused by gases mixing in hoses, regulators or cylinders.
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Torch and Regulator Check Valves (Flow Specifications Charts)

Oxygen Gas Right Hand A-Size Male to A-Size Female Nut Torch Style Check Valve
Torch and Regulator Check Valves (Flow Specifications Charts)

Fuel Gas Left Hand A-Size Male to A-Size Female Nut Torch Style Check Valve
Torch and Regulator Check Valves (Flow Specifications Charts)

Torch Style Check Valve Set
Oxygen Gas Right Hand B-Size Male to B-Size Female Nut Torch Style Check Valve

Oxygen Gas Right Hand B-Size Male to B-Size Female Nut Torch Style Check Valve
Fuel Gas Left Hand B-Size Male to B-Size Female Nut Torch Style Check Valve

Fuel Gas Left Hand B-Size Male to B-Size Female Nut Torch Style Check Valve
Description N/A Torch Model, A-Size (3/8"-24)

A one-piece, compact unit designed for A-Size applications. Mounts to torch to prevent reverse flow at point of origin.

Oxygen RH, A-Size Male to A-Size Female Nut, to 125 PSIG (800 kPa). 		N/A Torch Model, A-Size (3/8"-24)

A one-piece, compact unit designed for A-Size applications. Mounts to torch to prevent reverse flow at point of origin.

Fuel Gas LH, A-Size Male to A-Size Female Nut, to 50 PSIG (345 kPa). 		N/A Torch Model, A-Size (3/8"-24)

A one-piece, compact unit designed for A-Size applications. Mounts to torch to prevent reverse flow at point of origin.

Torch Style - Set CV-A9 & CV-A10. 		N/A Torch Model, B-Size (9/16"-18)

Mounts easily on torch, is readily seen and can be removed for periodic testing. Flows cut up to 12" steel plate or handle heating tips (1200 SCFH at 50 PSIG). Stops reverse flow at point of origin.

Oxygen RH, B-Size Male to B-Size Female Nut, to 125 PSIG (800kPa). 		N/A Torch Model, B-Size (9/16"-18)

Mounts easily on torch, is readily seen and can be removed for periodic testing. Flows cut up to 12" steel plate or handle heating tips (1200 SCFH at 50 PSIG). Stops reverse flow at point of origin.

Fuel Gas LH, B-Size Male to B-Size Female Nut, to 50 PSIG (345 kPa).
Field N/A Industrial
Model N/A Torch
Thread Size N/A 3/8 in N/A 3/8 in N/A 3/8 in N/A 9/16 in N/A 9/16 in
Number of Threads per Inch N/A 24 N/A 24 N/A 24 N/A 18 N/A 18
Maximum Working Pressure N/A 125 psig N/A 50 psig N/A N/A 125 psig N/A 50 psig
Gas Service N/A CGA-020 N/A CGA-021 N/A N/A CGA-022 N/A CGA-023
Gas N/A Oxygen N/A Fuel Gases N/A N/A Oxygen N/A Fuel Gases
Material N/A
Valve Seat Material N/A Fluoroelastomer N/A Fluoroelastomer N/A N/A Buna-N™ N/A Buna-N™
Check Valve Flow Specifications Charts N/A Flow curves presented here are based on air at 70 ºF. To convert flows of other gases, multiply by the appropriate conversion factor listed on instruction sheets included with all check valves.
Additional Information N/A Western's reverse flow Check Valves meet or exceed CGA and OSHA requirements (Pamphlet CGA-E2) and feature:
  • Flows for cutting up to 12" of steel
  • Machined high quality brass with stainless steel operating spring and valve disc
  • Low open/close pressures: 1 - 1-1/2 PSIG open valve and 10 oz. reverse pressure to positively close valve
  • 100% tested
  • Made in U.S.A.
Warning N/A This product can expose you to lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm.
Note N/A Check valves do not stop flashbacks. N/A Check valves do not stop flashbacks. N/A Check valves do not stop flashbacks. N/A Check Valves Do Not Stop Flashbacks.

UL Listed 		N/A Check Valves Do Not Stop Flashbacks.

UL Listed