Question about a classic with rt on off.

[chefomar]

I'm going to install a rt on off in my classic valve and i just want to know what's recommended. Should I install a quad o ring or should i go with the urethane one?

[flyingpootang]

I'm going to install a rt on off in my classic valve and i just want to know what's recommended. Should I install a quad o ring or should i go with the urethane one?

Use the quad with a .712 pin or a urethane o-ring with a .750 pin

[chefomar]

I compared it with the pin of the classic on off and it seems just a bit shorter. Are those measurements in inches or what?

Use the quad with a .712 pin or a urethane o-ring with a .750 pin

[secretweaponevan]

I compared it with the pin of the classic on off and it seems just a bit shorter. Are those measurements in inches or what?

Yes, in inches.

[Spider-TW]

If your sear happens to be worn, the .712 is on the edge. I had to go back to a .723 with a quad oring and worn sear.

Just don't use the quad with the standard .750 length pin (or longer). The valve can't recharge very well with the pin sitting that close to the oring.

[pump]

i use a .75 pin(or whatever was normal length) and i just use the Teflon or X ring to tune the gun