InstantForum.NET v4.1.3Forumshttp://forum.marinedepot.com/forums@marinedepot.comSat, 05 Jul 2008 12:27:49 GMT20http://forum.marinedepot.com/Topic85744-5-1.aspx<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face="Times New Roman" color=#000000 size=3>I think you can put the check valves horizontally on a swing valve if you need to, I put my swing check valve horizontally, the manufacture stated make sure the swing hinge is on top, and I know it is working because my check valve is see through plastic and I can see the flapper close when I shut off the return pump. </FONT>Fri, 09 May 2008 16:43:16 GMTDC_APEXhttp://forum.marinedepot.com/Topic85744-5-1.aspxHi Doug,</P><P>Check valves need to be vertical, ball valves can be in any position.</P><P>HTH,Fri, 09 May 2008 07:23:11 GMTargihttp://forum.marinedepot.com/Topic85744-5-1.aspxDoes the check valve and ball valve have to be vertical or can it be horizatal?Thu, 08 May 2008 19:29:16 GMTDougJP