How does the waste gate operate

I see a smal short black rubber hose comming of the turbo air exit. The rubber hose goes to a diaphram canister(?) which has a rod that goes to a small lever on the exhast turbine houseing.

Is this how it works? Air boost at a certain psi going to the canister diapram through the smal black rubber pushes the rod that moves the little lever on the exhaust side houseing and opens somekind of bypass inside the exhaust turbine . The exhaust bypasses causeing the turbines to slow and not building anymore boost?

Or explain how it works...

 

You got it right.

 

Ok .... Anyone know what it looks like inside the exhaust houseing?

Im trying to determine if my wast gate isnt closeing all the way

 

There's a little flap that covers a hole in the side of the turbine inlet. When the wastegate opens, the flap uncovers the hole and bypasses some exhaust.

 

Here is a link to a post in the classifieds that has a picture of the internal waste gate valve. https://www.dieseltruckresource.com/...1&cat=8&page=1