georgeo
New member
I am in the unfortunate position of having the heads inlet valve corroded and seized. It will be a pig to replace because of its situation. Any ideas? WD40 regularly and often ?Duck oil ditto ?prayer (ditto)?
seized gate valves
- Thread starter georgeo
- Start date
sailorman
Well-known member
what type of valve is it /forums/images/graemlins/confused.gif
Pete7
Well-known member
Just been through all that, took an angle grinder to the outside and cut the flange off then fitted a new gate valve. Also did the 1/4 turn valves on the Sealine waste pipe during the winter, no way was that valve ever going to work again due to the concrete like stuff inside so just replaced it. Oil would have had little effect.
Pete
Pete
Norman_E
Well-known member
Most gate valves are made of brass, so if it is old and stuck it may be best to grasp the nettle and replace it. I have recently had the experience of a brass ball valve falling apart as I tried to close it. The boat had to be lifted to change it, and that was the most expensive part of the job.
Topcat47
Well-known member
Replace it with a new hull fitting (you'll probably not manage to get it off the old one) and a ball valve.
Alfie168
Well-known member
Speaking as a working plumber/gas engineer..having a gate valve collapse/disintegrate on you in a shore based environment is quite exciting enough thankyou very much. In a marine environment...well need I say any more.
I think a replacement is in order. If its stuck its most probably well and truly knackered (technical term).
Tim
I think a replacement is in order. If its stuck its most probably well and truly knackered (technical term).
Tim
VicS
Well-known member
[ QUOTE ]
knackered (technical term).
[/ QUOTE ] Not a technical term at all. According to the Oxford English Dictionary it is an <u>informal</u> term meaning exhausted, worn out or severely damaged.
knackered (technical term).
[/ QUOTE ] Not a technical term at all. According to the Oxford English Dictionary it is an <u>informal</u> term meaning exhausted, worn out or severely damaged.
Clyde_Wanderer
New member
I can only advice you not to attempt to open it or put pressure on it in any way whatsoever while the boat is afloat, as I watched one disentegrate in a boat owned by someone I know while she was just in the water but held on the launching hoist slings, and it was scarey, 10 min later and the boat would have been getting dragged from the bottom.
Alfie168
Well-known member
"Not a technical term at all. According to the Oxford English Dictionary it is an informal term meaning exhausted, worn out or severely damaged. "
Aw Golly Gee.....I never knew that (Still with his tongue firmly in his own cheek) /forums/images/graemlins/grin.gif
Tim
Aw Golly Gee.....I never knew that (Still with his tongue firmly in his own cheek) /forums/images/graemlins/grin.gif
Tim
tazzle
New member
Bite the bullet and replace. I've recently replaced toilet inlet and outlet valves; outlet was a brass gate valve jammed in the fully closed position, and still pretty solid, but inlet was the nightmare waiting to happen. Looked solid enough but one twist with the wrench and it just sheared - barely half a mm of metal wall left held together by 5mm thick scale.
Previous owner wasn't a believer in bonding - so the galvanic corrosion happened just where you couldn't see it, in the inside bottom of the valve always in contact with sea water. Looked fine from the outside when anti-fouling last year.
And yes, I went with Blakes. Marine Megastore have about the best price, and if you haven't ordered with them before you get 10% off your first order. No connection.
Previous owner wasn't a believer in bonding - so the galvanic corrosion happened just where you couldn't see it, in the inside bottom of the valve always in contact with sea water. Looked fine from the outside when anti-fouling last year.
And yes, I went with Blakes. Marine Megastore have about the best price, and if you haven't ordered with them before you get 10% off your first order. No connection.
georgeo
New member
Thanks. will bear all this advice in mind. looks like nasty job coming up
Clyde_Wanderer
New member
[ QUOTE ]
"Not a technical term at all. According to the Oxford English Dictionary it is an informal term meaning exhausted, worn out or severely damaged. "
Aw Golly Gee.....I never knew that (Still with his tongue firmly in his own cheek) /forums/images/graemlins/grin.gif
Tim
[/ QUOTE ]
Knackers were the folk that took in dead horses, they extracted various parts ie, the hooves for the manufacture of certain types of glue.
Hence the term Knackers yard, and knackered.
"Not a technical term at all. According to the Oxford English Dictionary it is an informal term meaning exhausted, worn out or severely damaged. "
Aw Golly Gee.....I never knew that (Still with his tongue firmly in his own cheek) /forums/images/graemlins/grin.gif
Tim
[/ QUOTE ]
Knackers were the folk that took in dead horses, they extracted various parts ie, the hooves for the manufacture of certain types of glue.
Hence the term Knackers yard, and knackered.
scarlett
New member
You have to replace them as soon as possible but as a quick free up repeated boiling water poured over and down it could do the trick. Be careful.
duncanmack
Well-known member
[ QUOTE ]
Speaking as a working plumber/gas engineer..having a gate valve collapse/disintegrate on you in a shore based environment is quite exciting enough thankyou very much. In a marine environment...well need I say any more.
I think a replacement is in order. If its stuck its most probably well and truly knackered (technical term).
Tim
[/ QUOTE ]
"Knackered" is a polite way of saying "It's F@cked" which is the correct technical term.
Speaking as a working plumber/gas engineer..having a gate valve collapse/disintegrate on you in a shore based environment is quite exciting enough thankyou very much. In a marine environment...well need I say any more.
I think a replacement is in order. If its stuck its most probably well and truly knackered (technical term).
Tim
[/ QUOTE ]
"Knackered" is a polite way of saying "It's F@cked" which is the correct technical term.
Bodach na mara
Well-known member
In my opinion, gate valves have no place anywhere on a boat. And few other places either. They are cheap and nasty things that can fail in a number of different way and will then not do what they are supposed to; stop the flow of water. Replace with a proper cone type seacock or a ball valve if you must
georgeo
New member
Agree with kenjohnson. A very experienced friend of mine spotted them when we were working on another job and said 'what are valves like that doing in a marine environment'. the boat in question is not mine, i lease it, so i have to say a quick fix is what i am after and it will be for the owner to eventually sort. Another word for the technical term knackered is 'Futu', Guernsey french for the vernacular!
Norman_E
Well-known member
The whole thing, including hull fitting was replaced.
Krusty
New member
[ QUOTE ]
In my opinion, gate valves have no place anywhere on a boat....They are cheap and nasty things that can fail in a number of different ways...
[/ QUOTE ]
Interesting!
My boat has bronze gate-valves, massively glassed-in, at the cockpit drains and galley outlets. They are fully operational, and were checked without comment during survey for re-insurance this year.
She was built to the highest Lloyds standard of the time by Southern Ocean Shipyard at Poole in 1973.
But maybe you are right, and they won't last!
In my opinion, gate valves have no place anywhere on a boat....They are cheap and nasty things that can fail in a number of different ways...
[/ QUOTE ]
Interesting!
My boat has bronze gate-valves, massively glassed-in, at the cockpit drains and galley outlets. They are fully operational, and were checked without comment during survey for re-insurance this year.
She was built to the highest Lloyds standard of the time by Southern Ocean Shipyard at Poole in 1973.
But maybe you are right, and they won't last!