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Propane meter

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Propane meter

Unread postAuthor: Spud Bud » Tue Feb 09, 2010 9:46 pm

I was gathering the parts for a propane meter but my local lowes does not have any 1/4in nipples in stock which i need to connect the meter to the combustion chamber. Can i use a 1/2 in. street elbow with a 1/2 in. nipple instead? the 1/2 in elbow will be screwed onto the chamber
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Unread postAuthor: psycix » Wed Feb 10, 2010 5:59 am

Why not?


Note:
If the 1/2" pipe is part of the metering volume, realize that the pipe will need to be 4 times as short as a 1/4" pipe.
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Unread postAuthor: Hubb » Wed Feb 10, 2010 11:57 am

The problem I've run into with using a threaded street elbow is that these threads can very easily be screwed into the PVC too far. With a nipple and elbow, the threads have a resting spot, which is up against the elbow, and tends to seal better. I would stay away from placing the street elbow into the chamber and just go with a regular elbow and nipple.

Just remember the volume differences as psycix suggested.
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