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Post by cliveshelton on Jan 24, 2012 12:18:13 GMT
I need to replace the 1.5" heads tank drain valve from my 36i. There is so little room to rotate a stillson wrench that I have found it impossible. Also the down pipe from the heads tank is completely resistant to removal and I have had to cut it from the valve in an attempt to be able to rotate the valve on its own.
Can anyone point me to a suitable tool to use. I have managed to turn the valve through about 10degrees but now the flat portions of the nut at in the wrong place to reposition the wrench and allow a bit more turning.
Many thanks.
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Post by sailbleu on Jan 24, 2012 17:38:29 GMT
Try heating it up with a hot air heat gun.
I bet that will help.
Regards
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Post by MalcolmP on Jan 24, 2012 17:49:37 GMT
Might there be enough room to try a chain wrench?  |
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Post by cliveshelton on Jan 25, 2012 13:48:29 GMT
I have tried the chain wrench approach with the same trouble. Thanks though. Heating the joint will be tried next and hopefully it might enable the valve to be moved by hand instead of a tool. Thanks again. Any more suggestions?
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Post by finesse on Jan 27, 2012 2:28:19 GMT
I am facing the same issue soon on my 2007 36i. The stock valve never was very easy and froze long ago. I ended up breaking the thread right off the ball last year. Anyone recommend a good replacement. Is there a marelon that will fit, and can it thread to a metal elbow?
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Post by shiook on Jan 27, 2012 20:00:42 GMT
A small strap wrench, similar to the chain wrench, but is smaller.
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Post by gecko36i on Jan 30, 2012 11:45:05 GMT
Maybe a tube spanner will work extending leverage point up to easyer entry point above? Welding an extension pipe to the length required. Good luck.
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Post by cliveshelton on Feb 2, 2012 14:43:39 GMT
I have managed to get the valve out now. Here's what happened:
1. Cut off the pipe from the holding tank to the valve. It is not flexible and cannot be removed by hand. It will need to be replaced with a new one. Use a powered tool to do this because it is very thick. However be careful not to damage the holding tank lower fitting.
2. Tried to turn the valve on its own with a pipe smallish pipe wrench. However the space is limited and managed only to get about 10degrees movement.
3. Fit pipe wrench to the valve on a circular section of the valve. The wrench does grip here and managed to turn the value more. NOW the trouble is that the valve handle spiggot hits the hull when the valve is turned any more. So it CANNOT BE REMOVED this way. In fact I cut the handle spiggot off using a powered dremel machine and managed to remove the value that way. But of course installing a new valve cannot be done.
4. The trick is to remove BOTH THE ELBOW JOINT AND THE VALVE TOGETHER. The rotation is horizontal to the hull and there is room for the whole thing to turn. Trouble is.....you should only do it on-shore because there is a real risk that the skin fitting will turn too and cause leaks etc.
5. I have instructed an expert to remove the elbow, replace the skin fitting as necessary and install new vale and pipe. It should only take an hour or so I suspect now that we have discovered the tricks of the trade. Trouble is I don't have the tools.
HEY HO!
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Post by Peter123 on Feb 6, 2012 21:45:09 GMT
My holding tank valve has also seized up . It's been very stiff since the boat was new (2009). The outside measurement of the plastic pipe from the holding tank is 58 mm making this a 2 inch pipe and valve (rather than the 1 1/2 inch quoted above). Was planning to replace using TruDesign (kiwi plastic) fittings throughout. Anyone tried this? Also was planning to re-plumb whole system so that heads effluent can be switched to bypass the holding tank (when pumping p*ss only). Has anyone tried putting in a diverter valve for this?
I would welcome your comments and advice and experience. Thanks
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Post by MartyB on Feb 7, 2012 16:00:49 GMT
A diverter is not hard to put in..........BUT, with that, check local regs for how you may or may not be allowed to dump effluent over the side per say. In the states, literally over the side is legal, once P is in a container, ie toilet, bucket etc, it can not be tossed over the side. One is also supposed to have the valve locked in the closed position, if not, boarded for a typical check by coasties, you can be fined. It would probably take two valves in reality, one from the head, to the discharge hose along with where it may come from the tank.
Marty
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