I want to re-design my fishbox drain. I want to fiberglass a PVC tube (1.5") right at the bottom of the box and pass it thru a bulkhead then glue a hose nipple on to it and run it to a heavy duty masserator pump.
It has to be watertight and strong.


I suppose I could use a fiberglass tube but I don't have one and cant find one out here. I could order one from McMasterCarr I suppose. But I was wondering if I could get it to stick to PVC plumbing tubes.

Has anyone tried to use PVC with fiberglass?

I suppose I could also 5200 the hell out if it but I would rather just epoxy it with something like 6-10

Ronnie did his deck drains that way. It will stick to roughed up plastic. Probly better off wit epoxy resin and slow cure hardner.
You can get recessed thru hull drains at most marine places. They sell them as shower drains
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Ronnie did his deck drains that way. It will stick to roughed up plastic. Probly better off wit epoxy resin and slow cure hardner.
You can get recessed thru hull drains at most marine places. They sell them as shower drains
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Mike
I used 6-10 epoxy to make them.
Just fibergalssed the deck after they were installed.
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I have a flush fishbox drain almost like an offset thru hull and it would work great except to get it in on the angle I want to would require a big cut out and repair. I think a plumbing pipe with a hose barb would would great then I could use a hole saw and rill out the hole, insert the pvc on the angle I want, epoxy it in and cut it flush against the bulkhead with a multi-tool.
I am going to resolve clogged drains and pumps right here and now...I just hope my watch does not fall off in the fishbox because this thing will chew it up and spit it out.

I have a flush fishbox drain almost like an offset thru hull and it would work great except to get it in on the angle I want to would require a big cut out and repair. I think a plumbing pipe with a hose barb would would great then I could use a hole saw and rill out the hole, insert the pvc on the angle I want, epoxy it in and cut it flush against the bulkhead with a multi-tool.
I am going to resolve clogged drains and pumps right here and now...I just hope my watch does not fall off in the fishbox because this thing will chew it up and spit it out.



Rough up the fitting (sand) then wash with acetone and use this stuff, won't have a problem.
Six10 Thickened Epoxy Adhesive (http://www.westsystem.com/ss/six10-thickened-epoxy-adhesive/)

Just out of curiosity, why do you want to run hard pvc lines?

That's not the issue. I only need the PVC to pass thru the bulkhead to get to the low point in the tank...from the PVC I plan to attach a 1.5" sanitation hose that will run down towards the keel (so the tank will natually drain and fill the sanitaion hose) . make a slow bend and mate up with a pump. I was trying to use a fishwell drain to pass thru the bulkhead but because of the slope of the bottom of the tank (the bottom of the boat is the bottom of the tank (this is a deep fishbox) so I have to drain it out the side into the engine compartment. I can not get it near the low point, there would always be water at the bottom of the tank. But I can drill a 2" hole and push a 1.5" PVC pipe thru the bulkhead (along the bottom of the hull) from the outside and epoxy that in place, attach the plumbing fittings and put on the hose. I think it will work. I plan to put that in tomorrow. I got all the fittings today.

How about bulkhead fittings with NPT threads they make them pretty big. Just a thought...

Hayward® BFA Series Industrial Bulkhead Fittings | U.S. Plastic Corp. (http://www.usplastic.com/catalog/item.aspx?itemid=25354)

I used them on my tank inlet.

Here is a cross section of the tank

Kind of in a pickle there. Poor design for user friendly tank wrt draining all the stuff. What is that 3" bulkhead, a foam/wood filled stringer? You really need a collared fitting that the collar/flange is at the same angle as the hull so it slides thru the hole aling the line of the hull. Think about making your own custom fitting. Fiberglass tube with angled fiberglass collar all glass together.

Just a thought, you could use two drains, one hooked up to a small bilge pump installed inside the tank.. Then only run the bilge pump at the end of the day when you want to completely drain the tank.

There is a 3/4" "plug" at the rear of the tank which if I pull it when I am running, will gravity drain the tank. If I pull it when I am at the dock it fills about 6" with water It is a pain to get to the plug when there is a lot of fish/ice in there, and even harder to put it back in.

A friend who has a similar boat had J&J put one in a few years ago. They tried a couple things before they settled on a fiberglass tube at an angle that is at the base and goes to a pump. So I was thinking along similar lines.

The other thing I was thinking was putting in a small flat bottom right near the "apex" of the current bottom that is raised at one or (either) end so I could put in a proper flanged fitting at 90 deg and the water would gravity feed into it. This however would probably be best but would have to wait till next winter before I tackle that.

Still head scratching....

Is there room below the tank so that you could plumb in a small tank with a pump inside?