K
kay-jay
Tip for no air locks.........do it live
Don'tbung the expansion or this may happen
View attachment 1338
This was actually from a job today where the cylinder had to be syphoned to remove it as there was no drain valve. The hose was tight in the draw off so created a vacuum which flattened the cylinder.
thanks tamz, can you explain how this happens by bunging the cwsc feed please? i would have thought that a bung simply stops the feed from flowing just like the the gatevalve would if it wern't siezed. i also thought that that a collapsed cylinder would only occur if the cylinder were to be emptied via a syphon effect, but surely unless the vent was bunged also the cylinder could 'breathe' and wouldn't collapse anyway.and if the vent and feed were bunged then the cylinder wouldn't drain?????
i'd really like to know where my thinking is flawed so i can avoid catastrophe on future jobs!!
thanks
KJ
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