Re:Gray Water Tank - Venting
Hey, when I installed the plumbing on my truck I added a vent a vent after the p trap and right before the check valve aka backflow connection. I have smooth flow of water going into the tank. My gray water tank has 3-3/8inch female connections, I removed the top cap to vent the tank. Hope this helped. My thread is yet another food truck. If u wanna see pictures.