Jon Danniken wrote:
"jtaylor" wrote:
the jet pump housing has a BIG crack in it. New pump/motor combos
are in the neighbourhood of $400 up here in the GWN.

It could have been worse:
http://kalyke.affordablehost.com/~jo...rozenPipes.jpg

Jon
My water pump at home (a piston pump, but the principal remains the same)
discharges into the bottom of an old but servicable hot water tank. The
house takes its water from a side fitting on the tank about a foot off the
bottom. The tank acts as a pressure reservoir. The pump (by the simple
inclusion of a tiny leak to atmosphere on the intake side) always pumps a
small amount of air into the tank on each cycle. Some pumps have this as a
design feature.
This arrangements means there is always a large amount of compressed air in
the tank. Any threat of freezing is simply taken care of by first turning
off the pump and then running the various lines until air comes out. Final
trick (if using a centrifical pump) bypass the check valve in the intake
line and allow air to blow the pump clear.
With a little thought this system could be used clear a part of any water
system at risk.
And if you have an air compressor handy...............

Hope this helps 'someone'.
Regards.
Ken.


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