Gray tank valve

[Sfolluo]

Help - I have a 383fb Columbus that has 3 gray tanks. I cannot find the third tank valve. Anyone know where it might be located??

[ENG2242]

Look for a plastic access door on the driver-side, lower skirting of the rig (similar to an outside shower compartment access). If you don't have a plastic access door. Climb under and look behind the skirting on the driver side, it's usually attached along the frame or on the underside. It's there, you may have to climb just under the rig on the right side and find it.

[LadyRVer]

My Montana was behind the 2nd axle, driver's side.

[Old-Biscuit]

Look on drivers side behind the wheels, in between the wheels.

[garyp4951]

Probably underneath the half bath.