To prevent things stopping too abruptly, a release valve is provided that opens the main steam pipe to atmosphere when the regulator is moved back to the right beyond the closed position.
|Release Valve (at the bottom)|
I had to shape a 1/2" pipe to fit around the main steam pipe and through the original hole in the footplate.
There were two challenges:
(1) Having used a union at the top end of the pipe, I found the nut used to tighten the union fouled the nuts holding the main steam pipe end fitting in place. I thus had to add a short extension to drop the union out of the way.
|Elegantly shaped Release Valve Outlet Pipe|
|Lower section of pipe below the footplate|