Part # 114.179
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Check valves stop the reverse flow of gas to the tank and greatly reduces the chance of a dangerous tank explosion. These check valves should be installed between the regulator and the hose. These Check Valves have 9/16" (18 STD B Fittings) Connections.
The Gas Check Valve fits on our gas regulators Smiths-114.040 Propane, 114.038 Hydrogen, 114.039 Acetylene MC, 114.036 Acetylene B and Uniweld 114.082 Propane.
The Oxygen Check Valve fits our oxygen regulator Smiths-114.035 & Uniweld 114.081.