Any recommendation for high quality seacock?

[mariobrothers88]

Hi guys I need to make a through hull for my watermaker and install a seacock. Does anyone have any good recommendations for a high quality seacock and best place to buy in the USA? I found a few on Amazon but they only had a few reviews. Thanks so much in advance!

 

[fallguy]

Groco is the only way to go Ron. You should also build a floodbox which will not allow water to rise above the vessels waterline and flood your hull.

You need one large enough to meet the watermaker demands.

 

[fallguy]

Use an intake like this one.

GROCO Bronze Thru-Hull Intake Strainers | West Marine https://www.westmarine.com/buy/groco--bronze-thru-hull-intake-strainers--P011_332_001_507?recordNum=2

Then a bronze valve.

GROCO Full-Flow Bronze In-Line Ball Valves, IBV Series | West Marine https://www.westmarine.com/buy/groco--full-flow-bronze-in-line-ball-valves-ibv-series--P06601405?recordNum=4

Then a bronze street elbow and one of these.

GROCO Pump Strainer with 1" Plastic Basket | West Marine https://www.westmarine.com/buy/groco--pump-strainer-with-1-plastic-basket--6608509?recordNum=4

The bronze baskets are not affordable and as a builder much cheaper to build a flood box.

Then you can manifold or whatever..

The bronze thru hull needs a #8 or #10 bonding wire to the boat's bonding bus or ground system.

 

[fallguy]

Here is mine. There is a tee that serves as a manifold for the two pumps. I have a washdown and livewell fill only, so no watermaker. It was about ??400$ for all the parts in 3/4"...because the strainer is cheap plastic, I build the floodbox and made a mount so the plastic strainer is not taking all the loads

 

[mariobrothers88]

Thank you so much Dan you are the best!!!

 

[Scuff]

Fallguy, does the floodbox surround the seacock to above the waterline?

 

[fallguy]

Fallguy, does the floodbox surround the seacock to above the waterline?

yes, I think so..a little nervous I am missing by an inch; inside the floodbox is also the blackwater tank which would reduce total water intake

After we launch, there is a window and I can measure down and add a rim if I am low...a smart guy would have built up say 3" higher, versus 1".

If the floodbox were low, water will fill the stairwell space and damage the wooden ladder I need to build