X valve mistery

[maverick13]

Hello guys

There's something my friend Seven7 and I don't understand.

I've a Xvalve with ult on my rpg mag.

When I use it with a HP tank, it leaks by the barrel, when I use it with a SHP tank, it works perfectly.

The on/off orings are lubed and in good shape.
We checked and cleaned every part of the on/off.
I even tried to change the on/off

Have you ideas ?

Thanks

[athomas]

When it leaks down the barrel, is it doing it because of bolt stick or is it just leaking all the time?

Have you tried removing a shim from your ULT?

[maverick13]

It leaks all the time.
It leaks as soon as I put air.

Yes I tried to remove a shim, without effect.

[Tropical Life]

Since it works with the SHP tank, its a small issue which to me sounds like velocity adjustment maybe increase some when using the hp tank. Check the velocity..

[Ando]

When your mean by high pressure is it 800+?

I was tweaking one of my markers last night and mistakenly screwed in a 400psi output tank which did the same thing you mentioned, installed a 850 and was butter. I would ck the pressure on that "HP" tank.

[GEE TEE]

Yeah some HP bottles sold recently are actually medium pressure output @ 650psi

This has caught a few out when trying to run Mags on them... especially X-valves

I would double check the bottle output