The H-2-X Type Controlair Valves are handle operate 4-way, exhausted center, pressure control valves.
The typical unit contains two directional control 3-way side valves and a pressure graduating portion that is arranged to increase, decrease or maintain air pressure to a separate delivery line. In neutral position,
both 3-way side valves exhaust both delivery lines. A movement of 10 degrees either side of center position opens the appropriate side valve and directs pressure to the indicated outlet port. Continued
movement past 10 degrees up to full travel, or 46 degrees either side of neutral continues to actuate
the pressure graduating portion to deliver a graduated pressure according to the valve of the control
spring.
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