Grey water

[Michelle-XRD]

We have 2016 Z-1, the grey water does not drain when the dump drains are closed. The sinks and shower do not drain, almost like it is vapor locked. Any ideas how to fix?

 

[jmnsn57]

Check to be sure the vent pipe on the roof is clear. Often times spiders, bees, and other critters build nests. Any blockage in the vent stack will not allow water to drain into tanks.

 

[Michelle-XRD]

Thank you, yes we checked that and it is clear. We thought that was for black only. Is that vent for the grey and black?

 

[dagst1]

Yes you should have a vent for each tank.

 

[Michelle-XRD]

We only have one?

 

[mark5w]

Another type of vent is the anti-siphon trap vent device. These are used as a secondary vent to aid in draining sink fixtures. Also called “check vents,” ASTVDs allow air into the drainage system, but prohibit air from passing out of the system. ASTVDs are installed in the liquid drain piping system, at or near a P-trap inside a cabinet. Look under the kitchen and lavatory sink area and you should find them.
They sometimes go bad.
The rubber membrane used in ASTVDs can sometimes dry out and become stuck in the open position. If holding tank odors are bad under a galley or lavatory cabinet near the P-trap, chances are it’s time to lubricate the rubber seal inside the ASTVD. Use Dow 111 lubricant to moisten the rubber diaphragm. Since it is located above the actual flow of waste water, the ASTVD is simply threaded into a fitting above the trap arm and is usually easily removed for inspection and occasional lubrication.

 

[Michelle-XRD]

Thank you, we did not realize we had those. We will check those. Thanks so much, appreciate the information.

 

[dagst1]

Our Cruiser has trap vents under the kitchen and bathroom sinks but there is also three vent pipes thru the roof. One for each tank.

 

[Michelle-XRD]

Thank you, we will check ours. Appreciate the information

 

[bertha]

agree with jmnsn57, Check to be sure the vent pipe on the roof is clear