TNGW1500SEExplorerFeb 11, 2018Sink ventI'm doing a kitchen remodel and have an opertunity to get rid of the "cheater valve" and run a real vent. My question is, do I really need to run 1 1/2" pipe for just the vent or could I reduce it dow...Show More
Old-BiscuitExplorer IIIFeb 11, 2018AAVs are downstream of 'P' Traps so they do NOT get sucked dry from negative pressure created in sink drain line when DUMPING waste tankDon't have room for 1 1/2" vent line to roof.....then upgrade and use a better AAVVolume/weight of water being drained WILL overwhelm a small vent line and could collapse waste tank.Fresh water tank can use smaller vent lines due to relatively slow water removal
About DIY MaintenanceRV projects you can tackle on your own with a few friendly pointers.4,351 PostsLatest Activity: Jan 13, 2025
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