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Posted: Sun Dec 16, 2007 6:29 pm
by VH_man
Origin unknown, i beleive the reason your QEV failed is because it is a diaphram type.

the one you bought its a "poppet" type, wich uses a polycarbonate disk, aka why it can take so much pressure.

the ones from MCmaster should be able to hold 300 right?

Posted: Sun Dec 23, 2007 2:37 pm
by origin unknown
This Is why it doesn't work now...
I took apart the QEV to sand down the sealing face so it would seal a little better at low pressures. I put it back together, but in the process I tightened the screws a little too tight and stripped the threads where the screws go in. Usually I overtighten alot of things for I am slightly compulsive. Now the air leaks out around the screws and the qev is totally useless unless I pour molten aluminum to fill the screw holes and then re-drill them. I don't have the equipment to this though...

Posted: Sun Dec 23, 2007 3:25 pm
by dewey-1
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Posted: Sun Dec 23, 2007 7:42 pm
by unisonmind
Why don't you just drill and tap the holes one size bigger then the current bolt?

Posted: Sun Dec 23, 2007 10:01 pm
by daberno123
or if you don't think you'll ever want to take it apart again you could just fill it with epoxy

Posted: Wed Dec 26, 2007 6:00 pm
by origin unknown
Unison: I would do that, but I cant use my Dad's drill press. I dont want to mess anything up either by using a normal drill.

Posted: Sat Aug 02, 2008 3:18 pm
by stevenarroyo
why did you put a valve after the plowgun? :?:

Posted: Sat Aug 02, 2008 3:27 pm
by Gippeto
The ball valve is acting as a "safety" .

This information was in the first paragraph.