Water tank deck fill missing

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gj1973

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Hello all. I'm the new happy owner of a sea ray 250 sundancer which I'm giving some tlc to over winter. I've so many jobs and questions but this is about the fresh water system.

Basically I can't find the deck fill for the water tank. The tank looks newer than the boat and is polypropylene. It's vented to the side of the hull and has an outlet that goes to the water pump. Beyond the pump it feeds the galley and I guess the head (which is another job to do). It also feeds the sundeck shower and there's a mains water regulator pressure value too. So how on earth do I get water into this? There's no obvious opening on the tank.

I assume I need to drill a hole into the tank. Are these tanks usually accessible to the inside to thread a supply into? I then run the appropriate pipe to a new deck fill? Any considerations to be aware of. I'm wary of cutting holes into the deck needlessly!

Thanks for looking.
GJ
 
Strange that it wouldn't have a filler hole in it somewhere, you wouldn't fill it through the vent? Is there a makers name on it? You could try asking again on the motorboat forum, someone there may be familiar with the boat.
 
thanks for your replies guys. I've got the 250 DA, not the 280 which the link is for. For clarity the link is this one:

http://www.searay.com/boat_graphics/electronic_brochure/Company1729/1C1_23_74DEJAJNK1C.pdf

Looking at diagram 5.4, I have pretty everything here except the deck fill to the tank. The tank doesnt have a hole for it, and the deck doesnt have a hole where one had previously been. Trust me I spent a fair amount of time on Sunday crawling in the bilge following pipes!. I can only guess that somehow its filled from the dockside pressure regulated inlet only, or someone has done a half job of replacing the water tank!

I think I'll run a new pipe from the deck straight down into the tank. The tank doesn't have access to the inside, so will the hose connectors be self sealing or will I need to put a collar on the inside?

Thanks again.
 
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duncan99210 said:
You mention a mains pressure valve. This usually indicates a means of connecting a hose from the mains tap to the boat water system. This fills the tank and you then leave it connected whilst hooked up to shore utilities so that it keeps your tanks topped off. Is there a hose connection somewhere in the boat?
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I don't think it would work like that ad the connection to the internal pipework would be after the pressure pump and the pump NRV's would stop water filling the tank.

That's how mine works anyway.
 
duncan99210 said:
You mention a mains pressure valve. This usually indicates a means of connecting a hose from the mains tap to the boat water system. This fills the tank and you then leave it connected whilst hooked up to shore utilities so that it keeps your tanks topped off. Is there a hose connection somewhere in the boat?
Click to expand...


I have seen this on a few (mostly Italian MB's) Not much fun when the pressure is over the top, and no one else is using the water on the pontoon.................Messy.
 
Carmel2 said:
I have seen this on a few (mostly Italian MB's) Not much fun when the pressure is over the top, and no one else is using the water on the pontoon.................Messy.
Click to expand...


Thats why there is a pressure regulator built in. Before I fitted a pressure regulator my hot water tank PRV would open p-ss-ng water all over the dock.
 
gj1973 said:
I think I'll run a new pipe from the deck straight down into the tank. The tank doesn't have access to the inside, so will the hose connectors be self sealing or will I need to put a collar on the inside?
Click to expand...

Contact Leesan, they do a Uniseal . You cut a hole in the tank, push in the seal and then the pipework pushes into the seal

http://www.leesan.com/index.asp?m=3&cat1=3&cat2=154&t=Uniseals

Have a word with them to see if it would suit you application.
 
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