A-3546 Range Valve

Constant air pressure is supplied from the slave valve to the Range valve inlet or "S" port (1).

In LO range (range knob down (2), air passes through the valve and out the range valve outlet or "P" port (3). This air returns to the slave valve end port or "P" port depending on the slave valve used.

In HI range (range knob up (2) the knob prevents the air from passing through the Range valve. Air pressure which was in the outlet line (3) is exhausted out the bottom.