So my kitchen sinks are not draining, yes there empty, I just replaced the vent under the sink and it's still doing it. If I unscrew the vent under the sink it will drain just fine, but there's allot of pressure that escapes when I unscrew it. Does anyone know if silverlite trailers have a roof vent as well for the grey water tank? It's only the kitchen sink doing this.
Posted 2016-07-01 7:41 PM (#167434 - in reply to #167432) Subject: RE: Trailer sink question.
Extreme Veteran
Posts: 448 Location: Los Angeles, Ca.
Is the vent going in the right direction? The purpose of that vent is to allow air to enter the system so the trap doesn't get sucked dry. Not sure where you are getting pressure. Grey tank should have a roof vent. Check that it is clear.
Posted 2016-07-01 7:43 PM (#167435 - in reply to #167432) Subject: RE: Trailer sink question.
Regular
Posts: 73
There's really only one way for it go on the pipe. I suppose I could get some drain cleaner and see if that helps, could I have a bubble in the Grey water tank
Posted 2016-07-01 8:27 PM (#167437 - in reply to #167432) Subject: RE: Trailer sink question.
Extreme Veteran
Posts: 448 Location: Los Angeles, Ca.
It is also possible that you main grey water tank vent pipe slipped down into the tank. Assuming the vent pipe is clear, drop a tape measure down the pipe and see where the tank is. If the bottom of the pipe is under water, that might account for the pressure you see coming out under the sink when you unscrew the vent fitting. There should be a couple of inches of the main vent pipe sticking out from the roof surface...another easy check.....try draining the sink with the grey water discharge valve open. If all flows properly, then the culprit would be the main vent pipe.
Posted 2016-07-01 8:30 PM (#167438 - in reply to #167432) Subject: RE: Trailer sink question.
Regular
Posts: 73
Is the only vent the one under the sink? Or is because the only roof vent I have is for the shower, the Grey water tanks are seperet for the kitchen and bathrooms
Posted 2016-07-01 11:57 PM (#167440 - in reply to #167432) Subject: RE: Trailer sink question.
Extreme Veteran
Posts: 448 Location: Los Angeles, Ca.
Should be two vents on roof...one for black water (toilet) and the other for grey water.....sinks and shower.Put your ear to the pipe and you will be able to hear the water running from the toilet or sink to figure out which is which.
The little vent under the sink is just there to prevent the trap from siphoning empty. The one on the roof is there to vent the tank....allowing for the air to escape as the tank fills as well as to let air in when you drain the tank.
Trailer sink question.
