Check Valve and PNP

[teamerickson]

Wondering if there would be any benefit in adding a check valve on my vent line? My PnP bags are tied into the hard tank vent line. Would a check valve help with drain times or help drain more water?

[robbennett]

In my system where the bags are plumbed seperate from the hard tank I have a check valve as close to the bag as possible. it keeps the bag from getting air in it while draining which allows the pump to stay primed for a more complete drain. Not sure how that would work with a hard tank because air needs to be able to get into the hard tanks when they drain.

[minnmarker]

In my system where the bags are plumbed seperate from the hard tank I have a check valve as close to the bag as possible. it keeps the bag from getting air in it while draining which allows the pump to stay primed for a more complete drain. Not sure how that would work with a hard tank because air needs to be able to get into the hard tanks when they drain.

Why put the valve close to the bag? I'm installing a system in the next week or so. Was going to tuck them up under the gunnel.

[robbennett]

if they are closer to the bag the water on top of the check valve will help seal it better.

Why put the valve close to the bag? I'm installing a system in the next week or so. Was going to tuck them up under the gunnel.