@Hot Water posted:The "simpling valve" I referred to is NOT in the cab, nor under control by the Engineer
You didn't read did you?
There is a "simpling valve" in the cab under direct control of the engineer. Sometimes it is labeled a "Starting Valve", sometimes it is called an "Emergency Valve". Whatever it is called, it is under the control of the engineer.
The valves that you are refering to are 1.) the "Reducing Valve". It reduces high pressure steam to a lower pressure steam in order to admit it to the large low pressure cylinders. And, 2.) the intercepting valve. This is the valve that closes off the high pressure exhaust chamber from the low pressure receiver pipe. This is the valve that it under the control of the engineer if he so desires.
