EK Ballast Install

[eks]

You will only need 2 check valves per pump. One between the manifold and the pump and one on the vent line before the T with the drain line. Or if you fill and drain from the top of the bag you could get away with one check valve on the vent line and fill and drain through the thru hull. By filling and draining from top of bag you might lose a little water in the bag but not much. I am taking off my check valves on my fill lines since tehy are higher than the bag

Actually you would need 3 check valves.

Here is second option the diagram

[da.bell]

Just double checked G's ballast thread, both have a scoop installed backwards.

Okay, I thought something else apparently.. What are we talking about???

[chpthril]

I thought he had the mushroom thru-hall hardware. That is what G used......

Just double checked G's ballast thread, both have a scoop installed backwards.

[da.bell]

Agreed, lesser of 2 evils. I wonder if a mushroom thru-hull would salve it, and leave the system as is?

I thought he had the mushroom thru-hall hardware. That is what G used......

[xpjim1]

I do not think the thru hull is the cause. Even the mush room systems need tweaking

[chpthril]

Not sure but it's better than a forward one and forcing the water into the bag. Check value will solve this IMO.

Agreed, lesser of 2 evils. I wonder if a mushroom thru-hull would salve it, and leave the system as is?

[chpthril]

I'm wondering if the vacuum from the backwards scoop is the cause of the unwanted back-flow??????

Just curious, what's the purpose of the backflow if you have a vent or are you saying it's in lieu of the vent?

Asking me? the backflow is the unwanted draining of the sac through the pump while cruising. These pumps aren't supposed to do this.

[da.bell]

I'm wondering if the vacuum from the backwards scoop is the cause of the unwanted back-flow??????

Not sure but it's better than a forward one and forcing the water into the bag. Check value will solve this IMO.

[xpjim1]

You will only need 2 check valves per pump. One between the manifold and the pump and one on the vent line before the T with the drain line. Or if you fill and drain from the top of the bag you could get away with one check valve on the vent line and fill and drain through the thru hull. By filling and draining from top of bag you might lose a little water in the bag but not much. I am taking off my check valves on my fill lines since tehy are higher than the bag

[dogbert]

Just curious, what's the purpose of the backflow if you have a vent or are you saying it's in lieu of the vent?

[chpthril]

I'm wondering if the vacuum from the backwards scoop is the cause of the unwanted back-flow??????

[da.bell]

Yes and you definitely will have the ballast puppy working with minimal effort also.

[eks]

But the check valve will stop that now

true! I am still trying to solve a problem that has being address with a check valve.

[dogbert]

This is a crude drawing of how a guy on WW did his DIY Ballast Puppy install.

I'd lower the pump, but raise the hose between the bag and the pump. This should take some of the pressure off to prevent the trickle. It would make it work a bit harder when emptying, but it shouldn't be too bad.

[eks]

His diagram I would have to use 3 check valves.