Valterra 400-S PVC Air Check Valve， Clear， 1-1/2" Slip， Repairable</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Schedule 40 PVC construction for strength and resistance to corrosion and mild chemicals</li><li>EPDM seal for resistance to water and oils</li><li>Maximum pressure rating of 150 psi</li><li>Spring tension of 1/4 lb. for secure closure of valve</li><li>1-1/2" slip and 2" spigot connection</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/41sIE-pSj9L.jpg' noproxy></br>