Low point drain line caps nightmare

[Lemonhead78]

So I had to pay someone in October to winterize my camper because my health was really bad. My trailer has 5 drain lines underneath. Some are labeled and some are not. On one side of camper near the hot water tank it has 2 underneath it and says low drain. Their side by side ( touching ) . To the left of that is one labeled fresh tank drain. The guy who winterized left all 3 caps off and put them in the hot water tank access door area. One of the 3 was missing a rubber gasket. I checked Home Depot, a plumbing supply store and even the service department where I bought the trailer. Nobody has this size gasket. They said they will contact forest river and call me back. They haven’t called yet . So here’s my questions please try and help.

The cap is this size and looks similar to this. I can’t see the gasket inside so I’m not sure if it’s the right one or even if it has one. It’s cheap so I tried . You think this is what I need ? Flair-It 16860 Plastic Cap Fitting, 0.5" Size https://www.amazon.com/dp/B000H602C8/ref=cm_sw_r_cp_api_i_Tb5QCb78BXCPB

Second question: on the opposite side of trailer theirs 2 more lines . These are not labeled and he left the caps on these lines. Is their an explanation for why these caps are left on and the others I described above were left off. ? I need some education if you guys don’t mind sparing the time. It’s a surveyor 2016 by forest river

[gmckenzie]

ZINGERLITE wrote:
I went and bought plastic valves from the plumbing section at lowes and screwed them onto the 3/4" fittings where the caps go. No more need for caps. Just turn the valves.

I did the same with mine as well as the fresh water tank drain. Much easier to deal with.

[Lantley]

THe lines that were not cap are likely the vent and drain line for your fresh water tank. THey do not need any caps!

[Lemonhead78]

mobeewan wrote:
If the cap is a Flair-it cap and looks like the one in the link, there is no gasket. Those caps are used to cap Flair-it fitting where the PEX tubing has been removed. They seat against the Barb the PEX normally slips over before tightening the nut used to hold the PEX to the fitting. They will hold pressure up to the rating of the fitting, valve or PEX tubing without a gasket.

I have a couple I keep on hand in case I have a plumbing problem and have to disconnect a piece of PEX until I would have time to make a repair. I used one once to temporarily cap a tee I added where I was adding a new PEX line where I was installing a captive air tank. I still needed to use the trailers fresh water system before I had time to finish the tank install.

So what am I suppose to do. I checked hardware stores and the rv parts department where I bought trailer it and no one can help. I’m getting depressed over this. I called forest river and that was a joke.

[mobeewan]

If the cap is a Flair-it cap and looks like the one in the link, there is no gasket. Those caps are used to cap Flair-it fitting where the PEX tubing has been removed. They seat against the Barb the PEX normally slips over before tightening the nut used to hold the PEX to the fitting. They will hold pressure up to the rating of the fitting, valve or PEX tubing without a gasket.

I have a couple I keep on hand in case I have a plumbing problem and have to disconnect a piece of PEX until I would have time to make a repair. I used one once to temporarily cap a tee I added where I was adding a new PEX line where I was installing a captive air tank. I still needed to use the trailers fresh water system before I had time to finish the tank install.

[Lemonhead78]

Are the low point drains under pressure or could I go camping until the peice I ordered comes in ? I wanted to camp this weekend

[ZINGERLITE]

I went and bought plastic valves from the plumbing section at lowes and screwed them onto the 3/4" fittings where the caps go. No more need for caps. Just turn the valves.

[K_Charles]

Our last forest river TH had cape on the low point drains and also valves to use. If you didn't turn the valve ( that was hidden) water wouldn't drain. I think the cap will work without the o-ring and I think you found the right one.