Holding tank vent position ?

[Graham_Wright]

This one is a fine example of the genre. The boat Affinite was sold around 3-4 years ago, Steve now has something rather different. Peggie Hall retired some time ago and AFAIK does not post any longer, at least over here.

Must read the dates!

 

[charliemciver]

Hey all,

Does anyone know the logic behind the comments that the loop on the vent pipe reduces venting?

 

[vyv_cox]

Hey all,

Does anyone know the logic behind the comments that the loop on the vent pipe reduces venting?

I do remember that Peggie Hall's book advises that vent pipes should be constantly rising. Presumably to avoid any water traps in a a U-bend.