
06-07-2010
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Old as Dirt!
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Join Date: Nov 2008
Location: Tampa Bay Area
Posts: 1,162
Rep Power: 4
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Brad--
The stains on the porcelain can usually be removed pretty easily with "Wink" or any of the other acid based stain removers. For stubborn stains "Bartender's Friend" will work. More agressive scribbing is unwise as, if the porcelain is scratched, the problem gets worse rather than better. Using acid while the heads in service is contra productive as it also deteriorates rubber seals and O-Rings so, if used, use sparingly and flush really well (I actually mix up a little baking soda and water and pump that through the heads followed by 10 bowl's filled with fresh water).
The stains that bother most people is the discoloration of the inside of the plastic base that the cammode is mounted on. Barkeeper's Friend will work here as well but some discoloration is unavoidable. On our old boat I dismounted the head, removed the base. Cleaned it as well as possible, and after it dried, used a little white spray paint of the type designed for painting plastic models. Appled in several thin layers, this worked well.
The build-up in the discharge hoses is usually a conbination of salt crystals and calcium carbonate which is a sediment in urine. If hoses are heavily coated (and yours may be given your description of your Joker Valve), it will be difficult to clean them in-place. Dumping acid into the lines will break down the material but can also lead to inconsistant disolution which can result in chunks of the material breaking off which can--and almost invariably will at bends in the line--result in blockages as undisolved TP can "hang-up" on these chunks. While there are nay-sayers, products such as Ryd-Lime (for Calcium Carbonate) and Salt-Away (for Salt) will desolve build-up if you can keep the lines filled with the material.
I had to replace all of the waste line hoses on our boat soon after we bought her and with the new hoses in place we put squeeze bottles filled with a mix of Salt-Away and water in each head. Once the bowl is emptied and thoroughly flushed, we put a few squirts of this mix in the bottom of the bowl and give it a few more pumps. With this our Joker Valves have remained free and functional for several years at a time (although I replace them every two years) and the heads run freely. For cleaning we use Raritan's "CP" which does not attack the rubber flapper seals and O-Rings and a periodic flush with Raritan's Head Lube helps the seals and O-Rings remain pliable.
FWIW...
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"It is not so much for its beauty that the sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."
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