changing valve in AT44 cylinder

[mista meener]

ordered a 450 fps valve from Canada and a new cylinder so I can whittle new valve some to get 600-640 fps so I can get many more shots before pumping. not into hunting but into shooting . has anyone changed a valve and if so are there any springs or o rings that will come flying out? I will put in a vise with as little pressure as can be done to get valve loose. should I put something on the thread of the new valve?

[redlined_b16a]

Check out this guys vids


Please make sure the tube is de pressurized.
Nothing comes flying out......unless you leave pressure in the tube.Results could be fatal if unscrewed while pressurized.

You will find more help if you post in the pcp/hpa section.

[mista meener]

Check out this guys vids


Please make sure the tube is de pressurized.
Nothing comes flying out......unless you leave pressure in the tube.Results could be fatal if unscrewed while pressurized.

You will find more help if you post in the pcp/hpa section.

thanks a lot for the link. I figured the white plastic bushing was the way to take it out. the vid was perfect. I woulda found more help if I said I was changing a valve to higher power so I could shoot thru two hippos long ways from 100 yds lol