<div style="FONT-FAMILY: Times New Roman; COLOR: rgb(0,0,0); FONT-SIZE: 16px"><DIV>Which Dometic (year of vehicle at least) are you talking about?&nbsp; There&nbsp;is an upgrade to the earlier ones that&nbsp;may&nbsp;take care of that, on the&nbsp;assumption that you are talking about the air pump/spark generator.</DIV><DIV>&nbsp;</DIV><DIV>Dave B.</DIV><DIV>&nbsp;</DIV><DIV>&nbsp;</DIV><DIV>&nbsp;</DIV><DIV style="BORDER-TOP: #bcbcbc 1px solid; MARGIN: 5px 0px"></DIV><SPAN style="FONT-SIZE: 12px; FONT-FAMILY: arial; COLOR: #000000">On 09/14/13, <SPAN>Finn Runyon&lt;finnrunyon@GMAIL.COM&gt;</SPAN> wrote:</SPAN><DIV>&nbsp;</DIV><DIV style="FONT-SIZE: 12px; FONT-FAMILY: arial; COLOR: #000000">I have been cleaning and servicing the Dometic. The check valve after the pump is sticking. I went to the local auto parts store to buy a check valve, but the only one they had looks too constricting. I know that Go Westy has one, but does anyone have a part number for a check valve that works?<BR>Thanks<BR>Finn in Taos<BR></DIV></div>