[dpam]

If the check valve is in the pocket door (sliding) access will be by removing the facets in the shower. We have a 3150RL and I had the dealer replace our check valve (it was in the pocket door space behind the shower), because we have an extended warranty, so I figured I'll let them pay for the replacement. The total cost was $126.00. The way I knew our check valve was shot was because water was leaking from under the trailer when I tried to flush the black tank, plus we had some water on the floor inside the trailer.

All the best in resolving the problem.