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peghall · 21-04-2014, 07:30

Have any of you installed a separate water tank to supply fresh water to flush a sea water toilet? Do you add any "deodorizing" or other products to the tank...if so, what? Can you provide a photograph of the installation that includes the plumbing?

Have any of you cobbled up a "one off" reservoir (NOT the Raritan Crown Head reservoir or Flush Water Kit) installed in the flush water supply line on a sea water toilet that you fill with some type of deodorizing or mineral dissolving product ? If so, can you provide a list of the materials you used, your "instructions" for use, and the chemical used...and a photograph?

If you've installed any of these, or can send me to someone who has, I will be very grateful!

I have a very specific need for examples of ONLY these two types of installations and I'm on a tight deadline...so please do NOT try to educate me about toilets designed to use pressurized fresh water, the dangers of connecting sea water toilets to fresh water plumbing (or how it can allegedly sometimes be done safely), chemical recommendations, or try to make a case for composters....nor ANY opinions.

Thanks!

**a64pilot** · 21-04-2014, 07:47

Freedom45 · 21-04-2014, 08:00

I made a tank from 6 inch pvc pipe, glued a cap on the bottom and a threaded flange on top with screw-in cap. The tank is about 15 inches tall. Installed standard home toilet float valve and fittings on bottom for two toilets(Lavac) I added y-valve after tank to switch to sea water if needed. Works perfectly.
Only tools needed are a hacksaw and a drill to construct.

Chuck

Terra Nova · 21-04-2014, 08:27

Flush with fresh water.

UWOA · 21-04-2014, 08:30

Go to the Great Lakes ....

peghall · 21-04-2014, 10:37

Quote:

Originally Posted by Freedom45

I made a tank from 6 inch pvc pipe, glued a cap on the bottom and a threaded flange on top with screw-in cap. The tank is about 15 inches tall. Installed standard home toilet float valve and fittings on bottom for two toilets(Lavac) I added y-valve after tank to switch to sea water if needed. Works perfectly.
Only tools needed are a hacksaw and a drill to construct. Chuck

This is the type of thing I'm looking for...do you have a photograph? Please email me?

Peggie
----------
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and Other Sources of Aggravation and Odor"
Get Rid of Boat Odors

**a64pilot** · 21-04-2014, 12:21

How does the tank keep contamination from getting back into the main water supply?
I understand there is a valve, but how is this any safer than say a check valve?

Capt Phil · 21-04-2014, 12:28

Many boats with watermakers come equipped with Vacuflush heads that maintain a vacuum on the line preventing sewage from entering the fresh water system in the newer boats. Delivered quite a number of them back in the 90's and early 2000's. I was so impressed, we installed a similar setup on our liveaboard DeFever and were very pleased with the result. The only odor we had to deal with was the shower sump that was quickly solved with regular cleanout with Simple Green.

Terra Nova · 21-04-2014, 12:39

Quote:

Originally Posted by Capt Phil

Many boats with watermakers come equipped with Vacuflush heads that maintain a vacuum on the line preventing sewage from entering the fresh water system in the newer boats...

I really don't think so. Vacuum is used to evacuate the bowl. You still need an anti-siphon solenoid valve to prevent contamination.

Capt Phil · 21-04-2014, 12:46

Quote:

Originally Posted by Terra Nova

I really don't think so. Vacuum is used to evacuate the bowl. You still need an anti-siphon solenoid valve to prevent contamination.

You are dead right, Terra... I was trying to make a point that there are simple and effective means of securing your fresh water supply from sewage if you choose to go that route. As I recall, the anti-siphon valve is part of the pump assembly. I don't recall a specific anti-siphon valve installation on any of the vessels I delivered or did I put one on my boat, just the pump. Never had a problem... mind you, considering the **** I drank aboard my boat, who knows! Cheers, Phil

Freedom45 · 21-04-2014, 13:28

[QUOTE=peghall;1523980]This is the type of thing I'm looking for...do you have a photograph? Please email me?

I can't get a very good photo, tank is stuffed under sink.

Pressurized water feeds tank, heads draw from tank

**Dockhead** · 21-04-2014, 13:34

We have no problems with sea water odors at all provided toilets are flushed frequently and long.

jkleins · 21-04-2014, 13:37

[QUOTE=Freedom45;1524065]

Quote:

Originally Posted by peghall

This is the type of thing I'm looking for...do you have a photograph? Please email me?

I can't get a very good photo, tank is stuffed under sink.

Pressurized water feeds tank, heads draw from tank

How is the suction relieved? Is there a vent line?

Cavalier · 21-04-2014, 13:41

I did exactly the same as Freedom45 (even looks like we went for the same parts), the only difference being that I have one for each head, strapped onto the side of the associated MSD. Each cylinder is sized to a single flush volume +10%, the float valve is centralized to reduce chattering of the valve from sloshing due to roll/pitch of the boat.

Works great and solved the inlet hose odor problem immediately.

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