My dump valves work! - Fiberglass RV


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Old 02-22-2007, 09:11 PM   #1
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woo hoo! My first dump valve pull and nothing exploded or broke!

We are expecting much snow and ice. My tanks had some water in them from experimenting last weekend, so I trudged out there in the downpour to empty them, just in case.

I expected to get and arguement, but the black went first (Actually clear, the former owner had already cleaned the tanks) and then went the grey. I HOPE.. which one is which?

The valve that pulls to the side of the trailer is: *Fill in the blank*

and the valve that pulls to the rear of the trailer is: *Fill in this blank*



and another question... sorry, dumb, I know, but I have never had a plumbing system that I couldn't pick up and carry to the toilet

If you are on city water, does your fresh holding tank fill, or does it get bypassed? I had the water on for half an hour or so, but I also opened the drain valve for the holding tank.. nothing came out but a spit, then nothing.
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Old 02-22-2007, 09:21 PM   #2
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Quote:
If you are on city water, does your fresh <strike>holding</strike> supply tank fill, or does it get bypassed? I had the water on for half an hour or so, but I also opened the drain valve for the <strike>holding</strike> fresh supply tank.. nothing came out but a spit, then nothing.
Mine has a gate valve between the Fresh Water Tank and the Pump. I keep this closed when using the "City Water" connection. I believe that the pump also has a check valve in it to prevent "backwards" water flow... So the City Water connection completely bypasses the Fresh Water Tank.

Fresh = Supply
Black & Gray = Holding
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Old 02-22-2007, 10:13 PM   #3
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When Boondocking, the "City Water" connection should have a little ball valve to prevent the pump from dumping water through it overboard. I don't know if the screw on cap helps this, or is only there to protect the threads on the fitting when it is not being used.
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Old 02-22-2007, 11:51 PM   #4
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Gina:

The valve that pulls to the rear of the trailer is the blackwater, and the one pulling to the side is the graywater.

Frederick is correct. There is a check valve in the water pump which prevents city water from draining into the freshwater tank. That is a good thing, because otherwise that tank would eventually overflow and spill out the vent (which is the slit to the right of the tank filler opening). The fact that there was nothing in the freshwater tank means that the check valve is working as designed.

By the way, that cap on the city water connection is a good one not to lose, because the check valve at that end has a habit of becoming dislodged and leaking. This has been noted on this forum a number of times and applies to most trailers. The water pump when used would then push the water out that connection. Not good.
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Old 02-23-2007, 08:39 AM   #5
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thanks, or tanks...

the cap has a leash, just like my gas cap!

I take it that you only use the pump when running off the fresh tank?
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Old 02-23-2007, 08:48 AM   #6
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I take it that you only use the pump when running off the fresh tank?
At least in my Scamp. The fresh water connection pressurizes the system...no need for a pump. Just remember to use a pressure regulator at the hose bib...ya don't want to blow the water lines INSIDE the trailer
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Old 02-23-2007, 09:18 AM   #7
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there is a built in pressure regulator, but I bought an external one anyway, not knowing the condition of the onboard one.
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Old 02-23-2007, 09:25 AM   #8
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Gina,
You've got it, pump necessary only when using the tank.

Donna brought up a very important point. A good pressure regulator is required to prevent a disaster inside McMansion. You probably have one unless it went with the Shady Bush II.

Isn't this fun? It's similar to Christmas as you continue to "unwrap" more of the details of your McMansion.

A 10 gauge (large enough for a heater) extension cord should get power to the trailer, but it may take 75' to 100' depending on where the recepticle is located on the house.

Full of promise, the weekend approacheth...
Enjoy!
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Old 02-23-2007, 09:33 AM   #9
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The 13 did not have city water, only a "Supply Tank" as Fred would say. I filled it with a filler tube or my shower pump when boondocking.

This junk is ALL new to me!

The owners manual for the Burro says to open both valves when connected to a sewer line so everything just flows away down the drain. BUT, I have had a couple people tell me to never have the grey and black valve open at the same time...

who is right? Seems silly to let the tanks fill and dump when connected at the site, but then, I can see the balck grey mixing thing as hazardous as well.

Kurt, whats your hood look like? Ours was kind of a false alarm. I got about 1/2 an inch.
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Old 02-23-2007, 09:46 AM   #10
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When connected to a drain at a site always leave the valves closed till dump time. The reason being that, ummm, clumps don't drain and need, ummmm, fluid to empty the tank properly. I suppose you could leave the grey water valve open.

I personally don't want black water in my grey water tank so as I told you when I dump I do the black first and then the grey.

Glad to hear everythiong seems to be working ok!
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Old 02-23-2007, 09:56 AM   #11
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That makes sense. I think I would be a little more concerned about sewer gases getting back up into my sinks tho.
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Old 02-23-2007, 09:57 AM   #12
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Not like my dogs would know a difference
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Old 02-23-2007, 10:13 AM   #13
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A couple of quick clarifications:

1) the second pressure regulator goes onto the hose bib (faucet), and then the hose attaches to it, and then to the city water inlet. The external regulator protects the hose, especially when it gets hot under pressure. Most hoses will expand several times their actual diameter when hot and under pressure. When that happens, it's time to get a new hose. The regulator at the faucet prevents that from occurring.

2) leave your valves closed even when hooked up to sewer until you're ready to dump them. The black water always gets dumped first, and then the gray. That sequence ensures that all of the solids in the hose and plumbing are washed out and leaves a much cleaner disconnect and hose rinse out. If you allow the gray to just drain away, then there won't be anything left to flush the hose with from the tanks. leaving the dump valves closed also prevents sewer gas from entering into the trailer through the plumbing.

Roger
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Old 02-23-2007, 11:19 AM   #14
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Not like my dogs would know a difference

.....
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