low water point drain help

The hose would connect to the low point drain in the cold side of the water system, but you already knew that. If you have a valve to drain the low point drains, it would connect to that valve and maybe the valve isn't shut all the way or is leaking. It is possible the same drain hose could connect to multiple drains if you have valves, such as maybe also serving as the outlet for the fresh water tank drain.

If you don't have low point drain valves, and just pipes or hoses with caps you have to take out and put back, it's almost certainly the cap not sealing well for some reason--either its loose or cracked or something like that. (That's assuming it's not water dripping down along the outside of the hose; if that's the case, possibly it's just condensation on the pipes, sometimes called sweating, that's happening to drip out there...or possibly a little leak somewhere else in the system.)

If the same hose serves as the fresh water tank drain hose, then maybe your water pump's check valve is leaking slightly, which often is due to a bit of debris or dirt stuck in it.

Straight up from the line, in a cabinet or behind a draw. We had a TT once and the low point drain valves were under the shower behind a small removable piece of the kick plate.

It attaches to your cold water system so it sound like the valve is leaking, could have a piece of trash in it or just shot. Try opening it for a second or two and then see if it stops. If it's pex tubing put a shark bite cap or ball valve on the end until you can replace valve.

When the mfg.'s drill holes in plastic water tanks to install fittings and the shavings fall into the tank and stay there for a free ride to their new rv homeowner...you.
Sometimes those shavings do not remain in the bottom of the tank , they become bored and start to travel to the filter of the water pump or somewhere down the water line. They stop traveling when they become blocked by a valve or whatever.
It seems to becoming more common for a low point drain to drain the line as well the FW tank. As suggested, sometimes you can work a valve a few times to allow it to work sometimes you need to cut and replace.

jk31668 wrote:
my class c was parked and hooked up to everything as usual. fresh water tank is empty. happened to notice a slow drip from the cold water low point drain hose. any idea where that hose connects? never did this before.

My WGO Class C has 2 low-point drain valves, located under the bathroom sink. To access them for winterizing, I remove a few screws from a piece of luan/plywood that is the "lid" for a false bottom (about 2-1/2 inches deep) in the under-sink cabinet; remove that lid and there they are. I see your rig is a FR Sunseeker.... probably different than my rig, but ya never know.

Good hunting.............

Farmboy666 wrote:
It attaches to your cold water system so it sound like the valve is leaking, could have a piece of trash in it or just shot. Try opening it for a second or two and then see if it stops. If it's pex tubing put a shark bite cap or ball valve on the end until you can replace valve.

X2. I replaced both cold and hot water low point drains on our TT with brass ball valves. Much easier to turn on and off. The original cheap plastic caps always leaked.

jk31668: "..............a slow drip from the cold water low point drain hose. any idea where that hose connects?"

I kinda thought the OP was asking for info re the physical location of the low pt drains as that is where "that hose connects" ....but maybe not. Hopefully someone with his same coach will reply. Should be in his owner's manual though under "Winterizing" one would think? He's never been back, so who knows?

Glad he posted, in any event. I too have the OEM cheap plastic valves and plan to put the "replace with better quality globe valves" task on my "to do list" as a preemptive strike against a leak.

Safe travels...........

I used valves with PEX fittings but it's usually a tight space so if you don't have the smaller PEX crimp tool Shark Bite fitting would be the way to go.

Thx. Yup.....purty tight. Good excuse to use the Sharkbites ......... luv those things even if a bit pricey. :^))