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How vacuum tight are ‘Y" valves?
I want to put in a Jabsco (Model 2675387) self priming Macerator pump
to empty the holding tank when I’m more than three miles out. Will typical "Y" valves be tight enough under suction for the pump to draw from the tank instead of pulling so much air into the line around the "Y" valve seals that it just cavitates? Some seals work fine under pressure but leak under suction. The pump will only have to lift about 15 inches. It says it’s self priming to 5’ when "wet" but my experience with getting pumps to prime is that it doesn’t take much air leakage to result in major frustration. Any particular "Y" valve I should be looking for to avoid this as well as minimize the possibility of its being an odor source? -- Roger Long |
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