Plumbing Help Please

[R Socey]

I want to install a Jabsco 7gpm 12v washdown that tees at the console so there are two spray heads. I do alot of chumming, and bait fishing at night. I want the port side to deal with their mess, and the starboard to do the same. What size intake thru hole should I make? Where should I make it -bottom or transom? What size sea **** should I use? Also, I want to run a disperate continuos baitwell system that utilizes a shurflo pro baitmaster pump. What size hole? Where? What size sea ****? How big do I need the overflow holes on the baitwell to be? I want two of them - one on either side to compensate for list - to join inside the console, and dump out the side of the boat? 24'8" cc Thanks guys!

 

[Silvertip]

Re: Plumming Help Please

Re: Plumming Help Please

Pick the pump sizes you want. Then size the through-hull fitting to match. If you don't do that you end up dealing with adapters to match either the through-hull fitting to the hose or the pump inlet fitting to the hose. Same on the outlet side of the pump. Whatever the outlet hose feeds should have the same outlet and inlet fitting sizes to avoid adapters. Through-hull intakes are typically installed as low as possible toward the center of stern. However, these intakes will be out of the water when on-plane so the pumps will suck air. If that's an issue for you, then look at a system that intakes through the bottom of the boat.

 

[Pez Vela]

Re: Plumming Help Please

Re: Plumming Help Please

Install one or two of the thru-hull water pickups in the bottom of your hull (various sizes available) and match the size to the shut-off valve. Position the pumps according to the lift capabilities of each. Further plumbing will depend on your boat.

 

[R Socey]

Re: Plumming Help Please

Re: Plumming Help Please

Lets say every thing is 3/4". Since I want the inlet to the baitwell
to be on the bottom, and the overflows to be on the top, will two
3/4" overflows suffice; will they be able to keep up with the incoming flow? Thanks - this forum is great!

 

[Pez Vela]

Re: Plumming Help Please

Re: Plumming Help Please

How big do I need the overflow holes on the baitwell to be? I want two of them - one on either side to compensate for list - to join inside the console, and dump out the side of the boat?

I don't get what you mean, "compensate for list." The weight of a single baitwell drain hose (filled with water) is insignificant. The position of the baitwell on the boat's centerline is the critical factor. Joining two 3/4" drain hoses into a single 3/4" line overboard is not going to gain you much of anything. A single 1 1/8" drain line should do the trick.

 

[R Socey]

Re: Plumming Help Please

Re: Plumming Help Please

What I mean is when the boat is rocking back and forth the water will only be draining out of one side at a time. I was thinking of placing one on either side to compensate for that
so the water would always be draining, maybe have two 3/4"
joining a 1 1/2". I have an offshore hull, which is great for slicing
the waves but whin anchored in a heavy shop it does alot of
side to side ( list ).

 

[Pez Vela]

Re: Plumming Help Please

Re: Plumming Help Please

I have never seen a boat that doesn't roll back and forth, and believe me, you're over thinking this. The water will find its way out. One properly sized (and positioned) overflow drain line will suffice. If you want to feel better about it, position the drain either fore or aft on the tank, (rather than port or starboard). If that's not possible, fish from the same side of the boat where the drain is located.

 

[Silvertip]

Re: Plumming Help Please

Re: Plumming Help Please

Fit the live/baitwell with a standpipe in the drain hole. Water can only flow into the tank to the top of the standpipe and down the drain it goes,. If you don't understand this, lift the lid on your toilet tank. The big pipe (overflow) is called a standpipe. Obviously the drain should be bigger than 3/4 inch if the inlet is 3/4 inch. The drain also runs to the stern. Simple system and not subject to listing. If you also put timers on the pumps they have a MANUAL and AUTO setting. Set the switch to MANUAL to fill the tank(s). Set to AUTO when full. The pump will then cycle (runs for 30 seconds and is off for 3 minutes or so and then repeats). Some timers are adjustable for cycle times.

 

[R Socey]

Re: Plumming Help Please

Re: Plumming Help Please

Thanks Silvertip, but the intake is at the bottom of the tank, and
the overflows are usually at the top. Sometimes I'll need to run
the baitwell pump continuously to keep a bunch of herring alive
( fragile) The problem I had with my other boat was that the
outflow couldn't keep up with the inflow. I noticed that when the
boat rocked, the water would splash back and forth, and the single overflow hole in the middle seemed in efficiant. I just thought that if I had overflow holes on either side it would be alot better.

 

[Silvertip]

Re: Plumming Help Please

Re: Plumming Help Please

Since you are concerned about listing, isn't this the same effect as pouring water out of a bucket. How can even a one inch outlet handle that much water when the boat suddenly lists one way or the other. Don't know how big the tanks are but if there is 30 gallons of water sloshing around, that would likely amount to about 10 gallons trying to get out that one inch hole instantly. It doesn't work in the 1-3/4 inch bathtub in your home and it probably won't work in this application either. It also seems to me if you have the pump(s) running continually you are adding to the problem. Two overflows would likely keep the level down on calm water but the listing issue would still not be solved since the water rushes to one side, not both. Just being the devils advocate here.

 

[R Socey]

Re: Plumming Help Please

Re: Plumming Help Please

I don't know, I'm going to put a 3/4" drain hole on either side,
and run them into a 1.5" hose, and out the side - see if it works.
I can always drill the holes out bigger if I need to. The baitwell
looks to be around 30gal. At least when it sloshes to port it will have an egress - same to the starboard. Your analogy makes since, and it is certain that a big enough hole in the middle would
work, but I remember watching the water roll out of each side
of my old baitwell while the level in the middle had little change.
I know I'll be fishing in some rough conditions, and I just want
the optimum setup. I don't see any drawback to having two
exits. When it is calm, they will drain simultaneously. I appreci-
ate your input.