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Posted: Tue Jun 08, 2010 10:41 pm
by someguy314
This is a different question I came across.

Does the piston sit there and move along with the air pressure or does it have a rod through it and move along the rod with the air pressure? Or is it something completely different?

Posted: Tue Jun 08, 2010 11:29 pm
by Technician1002
Most piston valves are operated by air pressure. There is no rod. The one exception is my QDV which can't open by venting the pilot area to zero due to the 1:1 ratio of the seal diameter/piston OD diameter ratio. The rod is used to trigger it instead of air pressure. Once triggered, it is opened by air pressure at high speed.

Posted: Wed Jun 09, 2010 1:06 am
by Crna Legija
have you read this

Posted: Wed Jun 09, 2010 1:20 am
by Technician1002
That one is a chamber sealer. The thread need an update to explain the differences between barrel and chamber sealers and how they are different.

Posted: Wed Jun 09, 2010 8:58 am
by someguy314
-_- wrote:have you read this
Yes I have.

Posted: Wed Jun 09, 2010 9:02 am
by someguy314
Technician1002 wrote:Most piston valves are operated by air pressure. There is no rod. The one exception is my QDV which can't open by venting the pilot area to zero due to the 1:1 ratio of the seal diameter/piston OD diameter ratio. The rod is used to trigger it instead of air pressure. Once triggered, it is opened by air pressure at high speed.
Ooh I see ok cool but its kinda weird that it would work like that. But yeah that pretty much answers my question thanks!

Posted: Wed Jun 09, 2010 11:58 am
by spudtyrrant
Technician1002 wrote:That one is a chamber sealer. The thread need an update to explain the differences between barrel and chamber sealers and how they are different.
scroll down :wink:

Posted: Wed Jun 09, 2010 12:24 pm
by someguy314
spudtyrrant wrote:
Technician1002 wrote:That one is a chamber sealer. The thread need an update to explain the differences between barrel and chamber sealers and how they are different.
scroll down :wink:
what :?:

Posted: Wed Jun 09, 2010 12:45 pm
by Technician1002
Chamber seal, Barrel Seal, and Coaxial are shown.

Posted: Wed Jun 09, 2010 5:24 pm
by someguy314
Technician1002 wrote:Chamber seal, Barrel Seal, and Coaxial are shown.
oh