US Forge 08915 Victor Style Regulator Mounted check Valve</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Prevents accidents caused by reverse gas flow</li><li>Fits regulators with CGA "B" size 9/16-Inch outlets</li><li>Meets UL standards</li><li>Includes one fuel gas and one oxygen</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/41tABUlFopL.jpg' noproxy></br>