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Go Back   SailNet Community > On Board > Gear & Maintenance > What sort of valve is this?
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Thread: What sort of valve is this? Reply to Thread
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Topic Review (Newest First)
07-26-2013 11:36 AM
PaulinVictoria
Re: What sort of valve is this?

I can't imagine the surveyor tried to open a drain/service nut while the boat was in the water. Anyway, I emailed the insurance broker to advise that the valve is not seized and is functioning normally so I guess I will see what they say.
07-26-2013 08:49 AM
rugosa
Re: What sort of valve is this?

Quote:
Originally Posted by PaulinVictoria View Post
. . .because of course a surveyor couldn't be wrong about anything could they?
Maybe surveyor never saw one before & tried to 'turn' the valve, get him back for a live demonstration so he can advise insurer he made a mistake. Like you did, he could have asked someone.
07-26-2013 04:29 AM
FinallySailing
Re: What sort of valve is this?

Not sure of the right technical term here, but does the drainage/service nut open easily ? Or is that what your surveyor meant seized ?
07-26-2013 01:59 AM
chef2sail
Re: What sort of valve is this?

Quote:
Originally Posted by PaulinVictoria View Post
My galley sink has this:

Ignoring the general ugliness of it, what kind of valve is it? The handle only moves fore/aft through about 80 degrees, but when I had her out on the hard, the valve seemed to function just fine. Surveyor notes mentioned that it was a gate valve and it was seized, I don't think it's a gate and it's definitely not seized.
Gate. We had a couple of them on our C&C also . We replaced with flanged ball valves eventually.

Dave
07-26-2013 01:28 AM
overbored
Re: What sort of valve is this?

Products - W&O - Marine Supplier of Pipes, Valves, and Fittings there is a picture of the same valve near the bottom of the page. they are still used today
07-26-2013 01:18 AM
hopcar
Re: What sort of valve is this?

I would rather see a flanged seacock but it sounds like your valve is working. Just tell the insurance people it isn't frozen now.
07-26-2013 01:07 AM
Dog Ship
Re: What sort of valve is this?

Nice to see the double hose clamps on there Paul.
Surveyor's like that sh@t. Haha
07-26-2013 12:35 AM
PaulinVictoria
Re: What sort of valve is this?

The handle operates smoothly, and comes to a "stop" at each end as opposed to just getting stiffer, which would suggest it is operating as designed. When it's closed, water doesn't pass through it. When it's open, water passes through it (I tested it when she was hauled out). Again that would suggest to me it is operating as designed.

I just wonder why the surveyor stated "the gate valve on the sink is seized and should be replaced", and thus of course the insurance company are now all "have you replaced the seized gate valve on the galley sink" because of course a surveyor couldn't be wrong about anything could they?
07-26-2013 12:32 AM
hopcar
Re: What sort of valve is this?

Here is a drawing that shows how it works.
http://www.matco-norca.com/images/pr...Spec_Sheet.pdf
07-26-2013 12:26 AM
fryewe
Re: What sort of valve is this?

If it is your galley sink drain hull valve and the sink drains and it is seized...it is seized open and that gives a bit more urgency to fixing it.

Also if there is a chance it is seized obviously you don't want to pull the hose (or pull the side plug on the valve) to look at its inner workings.

If you aren't going to be on the hard for a while and it is convenient to plug the hull connection from outboard in order to remove the hose or side plug to have a look you might want to do that.

The side plug is probably there to allow cleaning and servicing.

If it is a gate valve and is designed to be operated by a quarter turn throw of the handle then either it doesn't open very far or there may be a gear inside the valve body to amplify the throw. And if it's not designed for a quarter turn throw it is likely broken and seized.

I'd be interested in knowing what you find out.

Good luck.
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