There are two basic ways to handle this problem.
Rv sewer valve stuck.
Broken or stuck toilet flapper.
Rv sewer valve stuck open.
Always add drain valve conditioner to the system when storing your rv for any extended period of time.
A stuck or broken holding tank valve is a really big issue if it happens but can easily be prevented.
First you can use some mixture that will eat the clog and.
When rvers ask about lubricating a sticky rv dump valve they re usually referring to the black 3 inch gate valve on their black holding tank.
An understanding of how dump valves work helps us take better care of them.
When rv users do this a lot of solid waste material can dry out and clog up the valve.
Check to see if waste or toilet paper is caught in the flap keeping it open.
All that goop in your black water and gray water waste tanks is held in place by the tanks dump valves.
A broken toilet flapper or ball valve could be behind the stink.
Try to keep the sewer valve from opening.
There are those rv users who do not see the importance of closing their black water valve and leave it open all the time.
It may sound stupid but it works and once you get the tank dumped it will be nice and clean.
We are at a rv resort without public restrooms.
This mechanism is responsible for forming a seal between the blackwater tank and the toilet itself.
On a recent trip with sewer hook up and both gray and black water valves open the kitchen sink backed up.
A sticky holding tank valve is a pain in the neck.
If this seal is not airtight smells will escape.
In some cases the 1 5 inch gray valve gets sticky over time especially if the rver is not using his rv full time.
What can we do to get this open and drain the tank.
If you continue to have leaks in the sewer system you may be able to check your valves if you have an external access port.