Mike I've used this product :http://www.airpowernet.com/twe3/prod...roducts_id=380
But I'm not sure using this valve again in my other project. Firstly, its user manual is written only for Albert Einstein. You can understand it only with a lot of excercise and sometimes by braking your gear doors. Even after 1 year, I still can not programe the door delay time. In my 3 test flight, I had problems with the door sequencing. It works in the ground, but fails in the air ???

So, If I were you, I would stay away from airpower....

Bülent