Pressure testing
This stuff was posted in the old forum and therefore lost so here it is again. The leak test jig is simply a tubeless tire valve and pressure gauge mounted to a piece of PVC pipe and then coupled to the system, wherever you can, using a straight section of auto radiator hose and clamps of the appropriate size. You can use a cheapo pool pressure gauge, metal threads, instead of the 100 PSI gauge I used. I drilled a slightly undersized hole in the pipe and just threaded the gauge into the pipe using the threads on the gauge to cut the pipe. Or, the proper way, use the right tap. Tire stem can be found at any auto store. Drill the right size hole and push the stem through from the inside, as you would replacing a tubeless tire stem. For both the gauge and stem I smeared silicone seal on the inside and let it cure. To pressure test just plug the return lines and pressurize the pipes and wait to see if the pressure bleeds down. I do this ever Fall and Spring just to make sure nothing has happened. Hope this helps.
Al
PS...when pressurizing the system make sure the jig is really securely tightened to the pipe. If it blows off it can do some serious damage as a projectile. Also don't stand where it can hit you if it does fly off. 25 PSI should be more than adequate for testing the pipes. (ajs-1)
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