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Drain For Holding Tank: 1998 Thor Four Winds

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I have a 1998 Thor Four Winds Windsport RV.

It has a water holding tank near the rear of the RV. I can't find the valve to drain the holding tank.

Anyone know where I might find the drain valve?

Thanks!

Frank

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Frank,

Are you asking about the potable water tank drain, gray or black?

Potable water tank. The fill port is at the rear corner of the RV, driver's side. Thanks, Frank

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Could it be under a bed or cabinet? My water tank is under the dinette seat, and the pipes are below the floor level. When I bought this unit new in 2009, there was no valve there to empty the tank, but when I looked underneath the unit there was a pipe coming down under the water tank, but it was sealed. The dealer went in and fixed it. and made a stick that would reach way down there to turn the valve. You could also call Thor and see if they can help you.

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