Avoid overfilling fresh water

[rvshrinker]

We’re going on our first longish dry camp. 4 days/3 nights We are planning to fill our fresh water off city water before going.

I have a fresh water pressure regulator, and an inlet hose.

Tell me what to do so I don’t overfill or cause some problem.

[Grit_dog]

Happytraveler wrote:

Lynnmor wrote:

slider45 wrote:

Happytraveler wrote:
What ever you do don't walk away while you're filling the water tank. My brother in-law got sidetracked and forgot to turn the hose off. As a result the fresh water tank blew up and the floor raised inside his motorhome. That was an expensive mistake.

That's a kind of mess we don't want to happen.

That can't happen unless someone plugged the vents like so many recommend here.

Who knows what happened, but the water was going in his tank for several hours. It happened to his older Prevost motorhome. They've been RVing for last 50 years or more.

Suppose anything is possible. I've learned more about what is "possible" on this forum than in the entire rest of my life I swear....
Although alot of it is forum posters' kindergarten mentality type stuff, like this thread. "Ya know, once, I saw a guy filling his FW tank with a fire hose from a fully open hydrant, and he started filling it then walked into the bar, drank 6 beers, came out 3 hours later and there was water EVERYWHERE!! Thus my conclusion is it's unsafe to fill a water tank with a hose.....any hose. Now I use a pitcher and meter the water in while my DW counts numbers of pitchers and converts pitchers to ounces to ml to l back to gallons just as a double check because I found a metric bolt in my camper and was worried that the tank capacity was maybe in litres not gallons!"

[Happytraveler]

Lynnmor wrote:

slider45 wrote:

Happytraveler wrote:
What ever you do don't walk away while you're filling the water tank. My brother in-law got sidetracked and forgot to turn the hose off. As a result the fresh water tank blew up and the floor raised inside his motorhome. That was an expensive mistake.

That's a kind of mess we don't want to happen.

That can't happen unless someone plugged the vents like so many recommend here.

Who knows what happened, but the water was going in his tank for several hours. It happened to his older Prevost motorhome. They've been RVing for last 50 years or more.

[magicbus]

Grit dog wrote:
2 pages already?
Put hose in tank filler. Turn on water. Stop when water is coming out of vent, or sooner if you don’t want to splash water on camper, vehicle or ground.

Whoa! Way to practical an answer. I think the mods should delete this !!! 😛 :w

Dave

[Lynnmor]

slider45 wrote:

Happytraveler wrote:
What ever you do don't walk away while you're filling the water tank. My brother in-law got sidetracked and forgot to turn the hose off. As a result the fresh water tank blew up and the floor raised inside his motorhome. That was an expensive mistake.

That's a kind of mess we don't want to happen.

That can't happen unless someone plugged the vents like so many recommend here.

[slider45]

Happytraveler wrote:
What ever you do don't walk away while you're filling the water tank. My brother in-law got sidetracked and forgot to turn the hose off. As a result the fresh water tank blew up and the floor raised inside his motorhome. That was an expensive mistake.

That's a kind of mess we don't want to happen.

[Grit_dog]

2 pages already?
Put hose in tank filler. Turn on water. Stop when water is coming out of vent, or sooner if you don’t want to splash water on camper, vehicle or ground.

[mgirardo]

Our Hybrid TT had a gravity fill fresh water tank. I know it was filled when water started to come out the gravity fill port. Our Motorhome had a water command center so just turned a few valves to fill tank from city water connection. We knew the tank was full when the water spilled out the overflow. Never got water inside the Motorhome.

Our current TT has a gravity fill, but we've never put water in the fresh water tank - we camp seasonally.

-Michael

[rvshrinker]

i used the inlet adapter which regulates flow. filled it til the first splash of water came out the vent. it took eight minutes; wasn’t quite empty to begin with. thanks!

[Sam_Spade]

elwood58 wrote:

It sounds like the OP is planning to use the pressure fill, not gravity fill.

I don't think "planning" has anything to do with it. In most cases, it is equipped to do one or the other.....not both.

[wa8yxm]

ON mine the fill is 1/2" the gravity fill is 1 1/4" Pool sweep hose. the Vent is about 1/2 inch as well.

[mobeewan]

What is the "Code" you refer to in regards to a trailer. Please cite.

[Lynnmor]

Veebyes wrote:
No need for the pressure regulator. You are not putting water into a pressurised system. There is a need not to put water into the tank faster than air can get out. I don't know why builders install such small relief vents but they do.

I believe that code requires twice as much vent as fill pipe on a pressure fill system. This usually means that they run two pipes for vent and one for the fill. Then the buyer sees water spilling out those vents and installs valves causing a potential serious problem.

On gravity fill system, venting is only a problem when the fill is jammed nearly full of hose leaving only the tiny vent screen to expel air.

[Veebyes]

No need for the pressure regulator. You are not putting water into a pressurised system. There is a need not to put water into the tank faster than air can get out. I don't know why builders install such small relief vents but they do.

[wa8yxm]

On my RV if I slightly overfill water pools on the ground on the side with the Gravity Fill door.. If I SERIOUSLY overfill it starts to pool in side and the Gas Alarm goes off as it gets soaked by the water fall.

Don't worry. it wont hurt anything other than your ears.

How I fill mine (once or twice a month)

I open the door and lock it optn there are a couple of 1 1/2" square lumber "Rods" on top of the tank. Tank is translucent so I can see water level. I sit at Picnic table while it fills. If I want it FULL (do not normally worry about 100% When the wood moves.. They are full (The wood sits atop the tank)

Else when ti's close I shut off the water. unhook, pack up and hit the road Jack and dont' yhou come back for at least a week. (Park rules since I fill on departure)