
The sprinkler valve manifold controls the air flow .Click below manifold details
Click
the Halloween Fear link below for details on the sprinkler valve
manifold that operates the prop.
It costs about $23 to buy the parts to make.
(New Note: I have been told that you can purchase a valve (manifold)
cheaper than you can make one. (See Below)
http://www.halloweenfear.com/Manifold.html
You can buy a valve similar to the one
shown in the link below from
Fierofluids for about $17
images\3 way valve.doc