I must disagree with the statement that the "worst is the filling of the
holding tank"
I have personal experience with the fact that a siphon can fill the tank and
back up through the head.
I put in an above water line loop and feel much better.
Phil & Sally
The Sally Ann 42 Hershine SDMY
Ballena Isle, Ca.
Your holding tank, on the other hand, has an outlet that is below the>
waterline (I surely hope so, anyhow). The inlet to that hose is not>
free-flowing, but is in fact connected to the holding tank (in the case of>
the poster, through a pump which contains two one-way valves). The tank>
itself has air vents, so it can't be part of a siphon. And finally, even if a>
siphon were to form, at the very worst you could do is to fill the holding>
tank with seawater.> > Scott Welch> FirstClass Product Manager>
www.firstclass.com> > Those who make no mistakes rarely make anything.>
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"w.k. perkins" wkperkins@hotmail.com writes:
I must disagree with the statement that the "worst is the filling of the
holdsing tank"
I have personal experience with the fact that a siphon can fill the tank and
Iback up through the head.
That will only happen if you have a non-positive-displacement pump for your
holding tank (and also only if your vents are blocked). In the spacific case
under discussion, the poster was planning on using a Sealand diaphram pump.
Scott Welch
FirstClass Product Manager
www.firstclass.com
Those who make no mistakes rarely make anything.