help identifying purpose of pipe outlets under travel trailer

[Puma26RLSS]

I have two plastic pipe outlets extending under my Puma travel trailer. When my city water is plugged in and turned on (with pressure regulator valve), the one on the left has a slow drip. I hand tightened it, but am away from home at KOA and don't have my Teflon tape handy. Will use when I get home in a few days, but I would like to know what these pipe outlets are for. I reside in Florida, so am unaccustomed to winterizing or flushing operations. Is that what these are for?

[bikendan]

Probably the low point drains

[Oldboy]

Ditto...

[Reverse_snowbird]

Clear pipes like that are usually fresh water tank pipes. Why there are two, I have no idea unless one is the overflow pipe. Do you have water in your fresh water tank?

Low point drains are usually blue (cold) and red (hot) but that's not a hard and fast rule.

[Puma26RLSS]

Originally Posted by Reverse_snowbird

Clear pipes like that are usually fresh water tank pipes. Why there are two, I have no idea unless one is the overflow pipe. Do you have water in your fresh water tank?

Low point drains are usually blue (cold) and red (hot) but that's not a hard and fast rule.

Yes, I have a few gallons in my freshwater tank, but not using that tank. When I turn off city water, the drip stops, or at least slows down. That is why I suspect it is part of the city water system, or, at least that one. The one on the right is not leaking. I'll check for colors in the AM, but don't remember seeing any. I am using my hot water heater, but water drips are not hot water.

[Mr. Dan]

The color of pipes on RVs is a poor method of determining anything. The fresh water tank drain on my Wildcat is blue - same as the cold water low point drain.

[ependydad]

Originally Posted by Puma26RLSS

Yes, I have a few gallons in my freshwater tank, but not using that tank. When I turn off city water, the drip stops, or at least slows down. That is why I suspect it is part of the city water system, or, at least that one. The one on the right is not leaking. I'll check for colors in the AM, but don't remember seeing any. I am using my hot water heater, but water drips are not hot water.

Did the drips start right away? Or did it take a few hours/day(s) to start?

If it started right away, I’m apt to believe it is low point drains.

If it happened later, it could be that your freshwater tank filled up through the water pump from the city water connection and is now slowly overflowing. There’s a check valve in the pump that is supposed to prevent this but they often stick “open”.

[Puma26RLSS]

My wife noticed the drip the morning after we set up the previous afternoon. We are on a concrete pad, and there was a moist area under the camper about two feet in diameter. I crawled under and saw a small drip from the left pipe that was about once every 30 seconds. I hand tightened it as much as I could and it did move a tad. Drip remained. Went to the city water spigot and turned it off and released the pressure in the system. Drip slowed considerably but did not stop entirely. Checked fresh water tank gauge and it read "empty" which is what I expected because I had only added a few gallons before the trip, which is my standard practice. So, at this point, I am surmising it is a low point drain as suggested and it just needs some Teflon tape to seal it better. I'll report results. At this point I can't imagine any issue with the freshwater tank as those systems are separate mostly...aren't they?

[ependydad]

Originally Posted by Puma26RLSS

At this point I can't imagine any issue with the freshwater tank as those systems are separate mostly...aren't they?

They're separated by the water pump. It's supposed to not allow water to back flow through it into the freshwater tank. But if the gauge is reading empty, it probably is and we're back to low point drains.

If it's a standard width, a quick quarter-turn sharkbite valve will close it up.

[Tundra 2014]

You may want to change to lever valves. The low water drain caps have a gasket or seal in them. An RV shop will have them, or just replace the cap that is leaking. I switched to the lever valves, does take having a PEX tool or screw clamps. My old caps took getting two wrenches to remove or tighten. Besides laying on my back and getting a "Bath" to remove when winterizing.

[JP Camper]

They look like they are the low point drains.

[5picker]

I will guess low point drain(s) since the OP believes there is nothing/little in the fresh tank.
The caps do not seal with Teflon tape.
Most all have a cone washer inside and hand tight is typically tight enough unless someone boogered the inner cone washer.

[Puma26RLSS]

Great help, guys. Really appreciate it. I'll dig into the fix when I get back home Saturday.