Quote:
Originally Posted by Miramar Owner
The storage areas can be from the smell from the stack on the roof just drifting back down along side the pipe. Once you remove the old sewer vent cap you'll be able to see what I'm talking about. The hole in the roof is larger than the pipe...the 360 Siphon cap eliminates that issue with a funnel shape pipe that fits into your vent pipe and seals to the underside of the new cap. It also comes with a screen that prevents insects from getting into the vent pipe. I was very pleased with the design and how well it works.
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I do almost the same thing except I replace my AAVs with good ones from the orange store and use the Cyclone vent on both tank vents.