45 Gallon Freshwater tank

[KATYBELLE]

My 71 Globetrotter has a flat freshwater tank. I have three connections (actually the 4th one is the fill connection. 1 on the top left, 1 on the top right and one on the bottom. I assume the bottom one is for the drain and the two top connections are vents. My question is where do I hook the water pump to? Thanks to all!

Katybelle

[Al Boondy]

The bottom one. There should be a drain in between tank and pump to allow you to empty the tank without having to use pump.

[KATYBELLE]

So the pump should connected to the line leading to the drain? thanks

[KATYBELLE]

Also, where does the other vent connection go? I know now goes to the fill up connection. Thanks.

[Al Boondy]

Leading FROM the drain. From tank to a tee for drain then to pump.
You can plug one vent or put a tee so both vents enter tee then have one line to filler connection.

[HiJoeSilver]

I would plug one of the vents, use the one that's most convenient.. Tie the pump suction into the bottom drain connection. Depending on where the bottom connection is you can use a T fitting to feed drain and suction or put suction in drain line. Just be sure drain slopes level or down.