jms87
New Member
I have a p-trap drain in my restaurant that isn't draining, when we disconnected the dishwasher drain hose water sprayed out of the drain end like it was under pressure. The dishwasher had not been run for over a week. I have taken the trap apart, snaked it out. I have also snaked all the other lines of this system yet the drain just fills with water. I don't believe any water is leaving through this p-trap, the water will over flow over the top of the drain line if I continued pouring water. I will attach a picture I think the issue is someone has tied this "drain" into a vent line. I have a two vent pipes in the sink area (very close together), one on the other side of the wall before the grease trap and one after the grease trap before the exit to the sewer. ant suggestions? Thanks!