World's Leading Manufacturer of Air Motors
RAM Winch Local Control Systems
For All Air Motors
RAM Pneumatic Local Controls are intended to be mounted directly onto the Winch's Air Motor
A Full Flow Local Control Valve mounted to an air motor consists of two parts:
1) The Reversing ( or throttle ) Valve which controls the air flow that directs which way the motor will rotate .
2) The Rotary Valve receives the air sent by the reversing valve and channels it into the motor’s cylinders to rotate the motor clockwise or counter clockwise.
This valve is housed in a compart known as the annulus which surrounds the rotary valve with air and often supports the “local” reversing-or throttle valve.
For the most part air motors are provided with only the rotary valve and annulus so that the motor can work with some form of remote control station.
Primarily a Local control valve is furnished to provide an operator standing at the winch the ability to control
the air motor in order to lift or lower a load.
Separate--Standalone (Reversing throttle) Valves are available that will direct air into the air motors annulus and rotary valve, like that shown below.
Local
Reversing or Throttle
Valve
Bolts to the top of the
winch motor's
annulus
Annulus that houses
the Rotary Valve
Air Motor
Newer generation standalone pneumatic Reversing Valves can be equipped with load sensing and emergency shut off devices to be compliant with Local and Global Standards such as those required by the EU’s EMD.