Working on the upstream side of water pump plumbing

gijoecam wrote:
Agreed... I guess I hadn't considered the tank being above the floor... Is that a common occurrence in modern rvs and travel trailers?

In the RVs I've owned, fully 100% have had the fresh water tank mounted on/above the floor. I'm not sure a sample size of one RV is statistically significant, though.

I think it's reasonably common in general, perhaps more so in winterized/semi-winterized RVs as having the tank and plumbing "inside" is an easy and cost-effective way to keep it from freezing. (The grey and black water tanks are trickier, as they don't work above the floor level for rather obvious drainage reasons and so need to be in some sort of a heated bay.)

gijoecam wrote:
Agreed... I guess I hadn't considered the tank being above the floor... Is that a common occurrence in modern rvs and travel trailers?

in my Flair, the tank was above the floor under a bed.
bumpy

Agreed... I guess I hadn't considered the tank being above the floor... Is that a common occurrence in modern rvs and travel trailers?

gijoecam wrote:
If the kink is above the floor, you'll get a little dribble in whatever back-flows from the hose to the pump, but everything downstream of the pump should stay there and any water on the tank side should drain back to tank.

That depends on whether the tank is also above the floor or not. If the water level in the tank is above the work site, you create a siphon and get a tankful of water on the floor. If it's below the work site, the water stays in the tank. On my RV, the tank is above the floor (under the bed) and next to the pump, so I would want to drain the tank if I had to do work such as is described.

If the kink is above the floor, you'll get a little dribble in whatever back-flows from the hose to the pump, but everything downstream of the pump should stay there and any water on the tank side should drain back to tank.

Yes and yes.

WyoTraveler wrote:

ScottG wrote:
The pump has a check valve so water cannot flow backwards through it and fill the tank when your connected to city water. So I don't think that will be a problem.
That is if I understand your question, which I'm not sure I do. :)

I think he is saying the kink is between the pump and water tank.

That's what I thought and then I wasn't sure.
If that is indeed the case only the water in that immediate line will want to come out.
Just grab a thick towel and sop up any water that comes out.

Drain the tank, repair the problem, refill the tank.

The only place that water will drain is where you cut the line. If the tank is empty, you will get very little water out of the cut line.

WyoTraveler wrote:
Unless the opening is above the water level seems to me water will flow. Ever see how a water level works Vs a bubble level? Water will seek its level point.

x2
bumpy

my tank has a drain valve,, most should have one. look at the bottom of the tank .for a drain.