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Stuck Diverter Valve

Lawrence B. Lee

Member III
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mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} </style> <![endif]--> My diverter valve has frozen up through inattention over the Fall and winter. That’s the valve that sends toilet water to the high seas or the holding tank depending on how you have it pointed The valve, according to the mfg. (Bosworth), is a delrin body with an aluminum handle. I assume delrin is commercial speech for plastic.
I note that Don Casey the fix-it guru recommends monthly vinegar flushes through the system to avoid frozen valve syndrome. I try to do this during sailing season. So I thought I would run the vinegar into the valve and let it sit overnight. No luck. Still frozen. Then I ran hot soapy water into the valve overnight. Ha! It now grudgingly moves but it requires a ton of muscle to get it to do so. I then tried mineral oil- still a bear. Don Casey also recommends running a 10% solution of muriatic acid through the system to get rid of crusty crustacean residue brought in over time by bringing sea water into the toilet to flush.
This sounds scary. Has anyone had any experience with running muriatic acid through your toilet system to help free up a stubborn diverter valve? My other option seem to be putting a large wrench on the handle and working it back and forth until it frees up or breaks. I really don’t want to have to install a new valve. It is not easy.
Anyone have any ideas?



Larry Lee
Annabel Lee E32-200
Savannah GA.
 

mherrcat

Contributing Partner
If you use the muratic acid don't close your through hull valves or allow the system to be completely closed and don't let it sit unattended. The pressure that could build up might damage something.
 

Mark F

Contributing Partner
Blogs Author
Hi Larry,

You can take the valve apart and clean it. Undo the 3 screws that hold the valve together and pull it out of the housing. If you're using seawater to flush with you probably have crusties in the valve and hoses. I had a stuck Bosworth Y valve, from seawater flushing. Since I cleaned it I use only fresh water to flush and it has been ok.
 

Lawrence B. Lee

Member III
Mark and Mark,

Thanks for your speedy replies. The valve is mounted backside of the sink cabinet wall in the head. The handle engages it thought a small hole in the cabinet. It is very tight back there and the only way I can figure how the admiral and I first got the valve installed and kept our marriage intact was through the workings of a loving and powerful Providence. Plus, I used a small digital camera to record images of what I could only feel. We also put really hot water in the hoses to make them supple. I really don't want to wrestle with that valve unless I have to.

Anyway, I plan on first trying the acid AND if that doesn't work we will just have to clean the little bugger out. Snarl #$%&*@
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I will report any successes with either plan.

Larry Lee
Annabele Lee E32-200
Savannah, GA
 

Mark F

Contributing Partner
Blogs Author
Hi Larry,

Bummer. I bet it looks better hidden in the cabinet though.
 

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Glyn Judson

Moderator
Moderator
Muriatic acid.

Larry, Might I suggest a 50/50 mix of muriatic acid and water to start with? I've cleaned a lot of brass and bronze for the boat over the years and never use anything stronger than that mix. This is nasty stuff son so be very careful when mixing it and absolutely make sure to have plenty of ventilation. Actually on that account, the acid takes care of that all on its own because the vapors are so choking as to force one from the proximity of it like, right now! Good luck and be safe, Glyn Judson, E31 hull #55, Marina del Rey, CA
 

Lawrence B. Lee

Member III
Free at last, Free at last

This just in. I poured two cups of a 15% solution of muriatic acid and water into my toilet and pumped it gently into my valve. I did not hear any crackling or effervescent sounds but after 5-6 minutes I tried to move the valve handle. WOW! It moved. A few more minutes and I flushed the acid out with lots of fresh water. The valve is not as easy as it once was but by golly it is more than manageable.

Thanks everyone for their help.
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Larry Lee
Annabel Lee E 32-200
Savannah, GA
 
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