small header tank

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small header tank

Post by snoozy on Sat Apr 13, 2013 8:22 pm

I have just had a thought about the priming of the water system in my legend, has any body put a small header tank above the water pump with a isolation tap in small tank feed to stop water coming back up after priming. any thoughts on this will be much needed scratch head
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Re: small header tank

Post by deckie on Sat Apr 13, 2013 9:23 pm

Hi Snoozy,

Have never heard of anyone fitting (or needing) a header tank scratch head

Providing the Pump and Taps are working properly and the Pipe-work is sound, you shouldn't have any problem with priming or maintaining a 'head' of water.

Even a very small air leak can play havoc with these systems.

Good luck up!

Brian

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small header tank

Post by snoozy on Sat Apr 13, 2013 9:44 pm

many thanks Brian
On the first fill of the season the pump would not draw water from the tank after letting it run for 50-60 seconds and I have not filled it again yet as I live in wales and we have had a little snow and any advice would be good as we are going to Scotland in may. thanks again Paul
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Re: small header tank

Post by -mojo- on Sat Apr 13, 2013 9:55 pm

My solution to the regular problem of the main pump not priming was to fit the smallest of the Whale in-line pumps on a short stub off the water tank outlet, with the cold feed to the main pump from the other end.

The supply lead passed up into the van and could be turned on for a short time when filling up to feed enough water to the main pump for it to prime itself. The in-line pumps offer little resistance to flow when turned off, so once the system had primed it is turned off and just sits there doing nothing.
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small header tank

Post by snoozy on Sun Apr 14, 2013 3:42 pm

many thanks needed new pump allthumbz now water heater leaking (love the frost) I will carry on quick_run to next bit.
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