Air admitance valve or running a bunch of pipe to the nearest wall? I'm leaning to the AAV but i dont know how well they work.

If you can not get to an outside wall use a revent kit, it goes on the trap and allows a small amount of air in so the water will flow and not creat a vacum.

good morning.

you should be able to find a type of vent with a check valve in it at a plumbing supply store.  i do not recall what they are properly called.

the part i am talking about will allow air to pass into it, but not allow air [and fumes] to pass out.

good luck.

peace.
billr

So the AAV is the way to go then.

Last Kitchen we did, the plumber piped the island sink in 2" PVC to accomodate water volume and still allow air flow.

Do not rish an insinkerator or other disposal without a true vent.

Pete

www.acehardware.com/product/index.jsp?productId=1276486

just take the drain pipe and run it down to the beach

You have a couple of options.

1) Use the AAV. If the line is 1.5" then that is probably the easiest option.

2) Use 2" PVC but only if you are less than 15 feet away from the "main" that you are tying into.

3) Install a "babrber shop loop" this consists of two risers connected to the main and connected to eachother at the top. The tee for the sink connection is hooked to the farthest down stream riser. This allows air from the main to vent to system and keep it from geting airlocked.

My only reservation with AAV's is that they are mechanical with rubber seals. That being the case, the seal will fail eventually and release sewer gas. Not a problem but it should be checked every so often.

Eric Austin
Austin Plumbing
www.austinplumbinginc.com

Quoted: You have a couple of options. 1) Use the AAV. If the line is 1.5" then that is probably the easiest option. 2) Use 2" PVC but only if you are less than 15 feet away from the "main" that you are tying into. 3) Install a "babrber shop loop" this consists of two risers connected to the main and connected to eachother at the top. The tee for the sink connection is hooked to the farthest down stream riser. This allows air from the main to vent to system and keep it from geting airlocked. My only reservation with AAV's is that they are mechanical with rubber seals. That being the case, the seal will fail eventually and release sewer gas. Not a problem but it should be checked every so often. Eric Austin Austin Plumbing www.austinplumbinginc.com

I guess i'll stick to the aav and BTW i'm running 2inch drain anyway because i already had the pipe and the 2inch fittings are cheaper than 1 1/2
thanks for the info