Gray tank plugged, limited options
Yes, I know it's been beaten to death but please bare with me. 70, disabled, on SS so on a budget. Not the issue, just sayin'. Yes, I'd love to have Joes RV Specialist come out but I need to try some...
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Seems like all the suggestions will result in a significant mess which the campground, you or your neighbors will not appreciate. I had a problem similar to yours only it was the black tank. Ugh! After thinking about it I came up with a device to use water pressure to clear the clog while still keeping the sewer connection hooked up. I decided on getting a clear sewer elbow, some pex, a hose connector and grommet. I drilled a hole in the elbow. Hooked up the pex to the hose adapter. Put the grommet in the drilled hole and inserted the pex.
Hooked up the device, connected the sewer hose to the end of this to the sewer hookup. Put a hose on the connector and you are ready to go. You can push the pex in or pull out through the grommet to fish the pex into the correct branch of the system. The pex being 3/8 inch restricted the flow so the water was like a jet and it broke up the blockage and all flowed through the system to the sewer with barely a drop of liquid spilled. Pressure will not build up in the system since water is allowed to drain
I will try to get you a picture when I’ get to the storage lot. Here are a couple links to some of the parts referenced above
https://www.walmart.com/ip/Camco-Rhinoflex-Swivels-90-Clear-Fitting-Odortight-Connection/23636867
https://www.homedepot.com/p/SharkBite-1-4-in-3-8-in-O-D-Brass-Push-to-Connect-x-3-4-in-Brass-Garden-Hose-Thread-90-Degree-Dishwasher-Elbow-U2276LFA/202721837
Good luck
Hooked up the device, connected the sewer hose to the end of this to the sewer hookup. Put a hose on the connector and you are ready to go. You can push the pex in or pull out through the grommet to fish the pex into the correct branch of the system. The pex being 3/8 inch restricted the flow so the water was like a jet and it broke up the blockage and all flowed through the system to the sewer with barely a drop of liquid spilled. Pressure will not build up in the system since water is allowed to drain
I will try to get you a picture when I’ get to the storage lot. Here are a couple links to some of the parts referenced above
https://www.walmart.com/ip/Camco-Rhinoflex-Swivels-90-Clear-Fitting-Odortight-Connection/23636867
https://www.homedepot.com/p/SharkBite-1-4-in-3-8-in-O-D-Brass-Push-to-Connect-x-3-4-in-Brass-Garden-Hose-Thread-90-Degree-Dishwasher-Elbow-U2276LFA/202721837
Good luck
