Drain fresh water tank

[Moak]

His trailer has been sitting for many years. If the sensors are correct then it still have water in the tank. I want to drain the tank but can't figure out where the drain valve is

[Bill M.]

Probably on the curb side, between the wheels, sticking out of the side of the galvanized box that encloses the tank. You have to lie face down in the mud in front of the wheels, put your head slightly under the trailer, and look back between the wheel and the tank enclosure. Use a flashlight. Should be a little valve there.

[dwightdi]

Some of that model do not have a drain. Connect a battery to the water pump and run it till it is dry.

[Tom Nugler]

Most trailers of that era have the fresh water tank drain valve under the floor close to where the 1 1/2 inch pipe from the outside filler hatch enters the tank. Look for a cut out on the floor in the cabinet on the wall adjacent to the filler. There are probably water line drain valves down there as well. Look for the valve on the pipe that goes through the floor and belly pan.

Tom

[TG Twinkie]

Is the tank above or below the floor?
Location of tank?

[Moak]

Originally Posted by TG Twinkie

Is the tank above or below the floor? Location of tank?

I found a heavy metal plate bolted center of rig just forward of the wheels. I think this is the tank, could see three electrical connections.

[Alumaholic]

The 1977 Sovereign 31' does not have a fresh-water drain.
We drain them by running a faucet and draining the water through the gray-water tank and out the gray-water dump valve.
Follow instructions provided on these forums for cleaning fresh-water holding tank with a sodium hypochlorite solution.