Black and Gray water vent pipes

[kevin61]

Do the vent pipes for the black and gray water tanks on the 17 ft. Boler need to travel straight up or can they handle a few 90 degree turns?

I want to reroute the piping in the project trailer as one of the vents is presently in the middle of the counter space.

Thanks

[Frederick L. Simson]

The gray water tank vent in my Fiber Stream has two 45^o elbows to shift it from under the kitchen sink to inside the bathroom. Below is the view of the plumbing under the kitchen cabinet.


Vent pipe (upper left corner) turns away to penetrate wall into bathroom.


Gray tank is below the floor under the kitchen sink.

• Top lateral is the drain from the Bathroom Sink.
• Just below it is the drain from the Kitchen Sink.
• Bottom lateral, just above the floor is the drain from the Shower.

This is the view in the bathroom on the other side of the wall.




This is the view straight on to the door jamb. Bathroom on Left; Kitchen on Right. Divider wall in center.

[Bud Kennedy]

I don't think it matters as long as oxygen can get down the vent. That means that you can not create the equilivent of a "trap" where water can collect thus cutting off the outside air.

These tanks grow bacteria of two different varieties, areobic and anaerobic When there is not an oxygen supply, anaerobic bacteria grows and is stinky to the max. However when oxygen is present the aerobic bacteria takes over and does not create an odor.

Hope this helps.

[Ian-Vicki]

Any drains for waste must be 45 degree elbows and sanitary ys, vents, as Bud points out, can be 90s so long as air flow is not restricted.
cheers
Ian

[kevin61]

Thanks all for the advice. I'm gonna move that pipe.