Pump out discharge valve location?

[xavierpil]

Hello there,
I have a 419 and heading offshore where I will have to discharge the holding tank.

I can not find the valve... Looked behind the bathroom, under the sink... nothing 

Can someone show me where they have it or what it looks like?

Thx!

[web]

Not all boats come set up for overboard discharge. I had to add the macerator and valve to both tanks and new thru hulls for both. Not sure why they were not installed except that mine was originally sold to someone in the great lakes.
It's not a difficult project but tedious.
Happy sailing.
Cheers

[xavierpil]

Thanks for your reply.
After a long long time I found the valves (two heads).
One is so easily accessible: under the sink, the lowest shelf has a small hole to allow you to lift it, and reveal the big red valve.