Fresh water drain valve

[Joeserrone]

I have a 2021 Thor Quantum Super C, where is the Fresh Water Tank Drain valve to quickly empty the tank? I have looked under the water tank and on the opposite side where the gray and black line cleanout valves are located but cannot find it.

[EA37TS]

Originally Posted by Joeserrone

I have a 2021 Thor Quantum Super C, where is the Fresh Water Tank Drain valve to quickly empty the tank? I have looked under the water tank and on the opposite side where the gray and black line cleanout valves are located but cannot find it.

Thor Quantum is not a Super C, it is a standard Class C.

Look under the bed. Thor has a habit of putting the drains under the bed.

[Mr Sunshine]

Not acquainted with your model but you might find the answer, and answers to things you have not yet wondered, by accessing your schematics from Thor. Register your VIN on the Thor website for that.

My bet is you'll find the valve inside on the floor, very near the fresh water tank.

[MrMikey59]

Low point drain is under the frig in the WS31 and requires you to remove the drawer to access. I'm still looking for the tank drain. I'll check under the bed after an under carriage inspection for the outlet!

[Judge]

Go to the Thor Owners site and download the schematics for your specific Class C model and it will show you were your fresh water tank drain valve is located.

https://www.thormotorcoach.com/owners

[Jimbo56]

Originally Posted by MrMikey59

Low point drain is under the frig in the WS31 and requires you to remove the drawer to access. I'm still looking for the tank drain. I'll check under the bed after an under carriage inspection for the outlet!

My freshwater tank drain and low point drain are one in the same according to my schematic.

[Largo]

Originally Posted by MrMikey59

Low point drain is under the frig in the WS31 and requires you to remove the drawer to access. I'm still looking for the tank drain. I'll check under the bed after an under carriage inspection for the outlet!

Same on my 2022 31W so I left these valves open and installed new valves onto the drains under the motorhome. Yes I have to crawl under the motorhome to open and close these valves but that is better than emptying the drawer and removing and re-installing.

[Judge]

I installed an electronic ball valve and a remote control switch for my fresh tank drain. Thor did put the drain valve under the bed on my Magnitude so I had to take the bed apart when I wanted to drain the tan after every trip. Now I just press a button and it drains.

[Largo]

I cutout a door into side of bed frame wall so I did not have to take bed apart to drain tank. Got matching paint for door from Home Depot.

[MrMikey59]

Originally Posted by Largo

Same on my 2022 31W so I left these valves open and installed new valves onto the drains under the motorhome. Yes I have to crawl under the motorhome to open and close these valves but that is better than emptying the drawer and removing and re-installing.

What parts did you use for this? THX