[C320-list] Fragile water lines

[Doug Treff]

Jack,

It could have been mineral deposits. If you flush a urine and salt water mix and leave it standing in the hoses (not a long enough flush), it will crystallize into a cement-like substance. Calcium carbonate (found on seawater) and urine crystals are a natural combination that will produce this problem.  So, probably not malicious, just poor (or no) maintenance.

See the link below... Peggie Hall - the "Head Mistress" is amazing in her knowledge of all things marine head and sanitation. Her answer to the question in this forum post is almost word-for-word what you described.
https://forums.sailboatowners.com/index.php?threads/salt-buildup-in-hoses.23417/

--
Doug Treff
doug at treff.us

On Mon, Oct 22, 2018, at 9:06 PM, Jack Brennan wrote:

> The head rebuild is another chapter of my growing repertoire of stories 
> about the p.o. I thought it was a bad joker valve and decided to replace 
> everything. It turns out the hose between the head and the holding tank 
> was clogged solid.
> 
> I mean really solid. As in someone seems to have put cement into the 
> head. After I removed the hose and whacked it onto the parking lot, some 
> cement-like chunks fell out. I suppose it could have been an accident, 
> but ...