"I am Tosk" wrote in message
...

In article cee50221-872b-450d-a446-9c59166b96d2@
29g2000yqq.googlegroups.com, says...

On Jan 16, 1:26 pm, Harryk wrote:
The manual is silent on how much you open the gas valve on the tank. I
opened it all the way and then shut it off when the "test" was finished.

You should always open the valve all the way on an LP tank. They are
designed with a "back-seat", which seals the valve stem when openend.
If you partially open it, gas can leak from the stem.

Wow, I did not know that.. I never seat anything unless I need to.

--
Rowdy Mouse Racing - Pain is temporary, Glory is forever!


Reply:
TOTALLY WRONG!!!! Crack the valve about 1/4 turn. Same with all flammable
gas cylinders. O2, Argon etc. that are high pressure and inert have back
seals. You want to be able to turn the tank off quickly if there is a leak
or fire. Take any welding class and you will learn about gas safety.
Propane is a lot safer than a lot of the flammable gas as it is a liquid
under pressure and therefore is at a lot lower pressure in the tank.
Acetylene is a higher pressure in the tank but is in solution in acetone (I
think that is the liquid) as acetylene will self ignite explosively at a
fairly low pressure.