Monday, Feb 04, 2019 at 11:49
I am not a fan of bladders because they usually have to hang and the stress of 70 L of water is significant. Bladders are far thinner than a poly tank and while resilient they can be holed more readily and gradually thin at stress points. A poly tank can be repaired with a soldring iron if need be.
I can attest to Dolium tanks in a different way. Bought one for water in the front of tub and it leaked around the boss where the drain fitting is moulded in. Absolutely poor production and never checked in manufacture either. Zero QA. Yes, replaced, but the replacement has poor moulding of
the neck of the fiiler and while ok is very thin in spots.
I also use a red poly tankfor diesel from same maker. It was purchased as a damaged tank. Upon inspection the tank neck had received a hit and driven
the neck down into the tank on one side. Hardly any thickness of neck wall and tank top where it joined. Maybe 1mm. Again very poor construction integrity. When repaired with additional poly welded into
the neck and top fillet all is ok.
Best to check where fittings are moulded in or formed in, I have learnt. They may be perfect, some are not.
If in tub or behind a
seat the hose can simply drain water out for use through an open doorway.
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