that is not a bad idea. If you left the seacock to the manual
pump's discharge
line open by accident and didn't have this ball valve your mechanic is suggesting, you could easily damage the
pump's check valves when you
pump out the tank. If the vent to the tank was restricted or clogged, this becomes almost guaranteed.
This is the same reason I recommend putting in a diverter valve rather than just a "Y" when setting up a manual
pump to dump the
holding tank overboard.
Quote:
Originally Posted by good5buck
One more question, but first some background .....
My tank is configured with two separate dip top-mounted tubes and discharges that lead to (a) a manual Whale diaphragm pump and (b) a deck pumpout fitting.
In this case, my mechanic is pushing me to put a ball valve between the tank and the diaphragm pump to improve suction and protect the manual pump. I haven't seen this approach recommended anywhere else under the sun, although it doesn't strike me as a terrible idea. Thoughts?
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Sailingdog
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Telstar 28
New England
You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
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