Bag fill/drain hose

[MGX]

Do you have your fill/drain hose towards the front or rear on your bags? Updated the pumps to reversible and plumbed the hoses to the front, thinking the rear would be better.

[mmandley]

I have the Fill / drain to the back, the pump has no problem pushing water in, having the inlet in the rear allows the bag to drain better as it gets lower. If the pumps loose prime during draining the bag wont drain all the way.

I have the Vent on the top opposite the fill side because as the bags fill that corner is highest in relation to how the boat sits.

[chwags69]

Having a hard time getting the back ballast bags to drain all the way. It isn't a timing issue. I thought I read on a previous post (can't find), that people added something to the pump or line to help drain the bags. Suggestions?

[Shoebox]

Having a hard time getting the back ballast bags to drain all the way. It isn't a timing issue. I thought I read on a previous post (can't find), that people added something to the pump or line to help drain the bags. Suggestions?

I put ball valves in the vent line, open when filling til they spill out the port, then close them. Keeps them from continuing to siphon out the vent, and when draining they drain completely with no air at all in the bag.

[chwags69]

Thanks Shoebox! Do you recall where you got them?

[MLA]

A quality marine check valve in the vent line will aid on a more complete drain. Totally passive, no opening locker to do anything for fill or drain.

[Shoebox]

Thanks Shoebox! Do you recall where you got them?

Home Depot

https://www.homedepot.com/p/LEGEND-V...-601/203581023

https://www.homedepot.com/p/1-in-Blu...TMA1/300823617

[Shoebox]

They won't stop passive drain, regardless of which check valve it is, because the flow direction is from the bag out the vent. However, they don't do much when emptying the bag to keep air from flowing back into it from the vent. I still got a lot of air back into the bag - until I installed the ball valves.

And you still didn't say which valves you use that work so well.

[dakota4ce]

Perhaps you’re mounting them backward? I don’t understand your comment. I am not sure why you want zero air back into the bag on draining...

I think he is saying that they will stop passive drain.....or there would be no reason to use them.

I believe Mike has a valve that is working for him. Mike has a crapload of experience more than any one of us yokels in this department, therefore I am inclined to believe what he says. He would have no incentive to make a false claim in this arena, since he installs ballast and sound for a living....

What valve it is? Not sure. Mike can answer that.

As far as the WM valves, I know some folks have good luck. I found them a little inconsistent on their release, so I just removed them to be safe. Certainly not a complete indictment of them, just what I decided to do.


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[Shoebox]

Perhaps you’re mounting them backward? I don’t understand your comment. I am not sure why you want zero air back into the bag on draining...

I think he is saying that they will stop passive drain.....or there would be no reason to use them.

If you are mounting them such that they stop passive draining, you are also not allowing them to vent, and may as well just cap the vent port on the bag and not use it. They should be mounted to allow flow overboard, or they are useless. The only reason to use one at all is to stop the air from backfilling the bag and allow a more complete drain.

I believe Mike has a valve that is working for him. Mike has a crapload of experience more than any one of us yokels in this department, therefore I am inclined to believe what he says. He would have no incentive to make a false claim in this arena, since he installs ballast and sound for a living....

What valve it is? Not sure. Mike can answer that.

I didn't accuse him of lying. He implied he used a superior valve, and I asked what valve that was. He didn't answer the first time, so I asked again.