Pneumatic Actuator Valve
Pneumatic actuated valves used compressed air flowing into and
exhausting from an actuator to open and close the valve. The type
of pneumatic actuator required depends on the actuator valve.
Valves requiring linear motion (gate, globe or diaphragm valves)
typically require a pneumatic diaphragm actuator. Quarter turn
valves (ball and butterfly valves) typically require either a
rack-and-pinion actuator or a scotch yoke actuator. We'll discuss
the two types on quarter-turn air actuators in greater detail.
Double Acting
Double acting actuators use compressed gas driving a piston to both
open and close the valve. These actuators have two ports to pass
and exhaust the gas. Compressed gas is fed through the first port,
causing the actuator to close the valve, and then exhausted out the
second port. To return to the original position the supply and
exhaust functions are reversed.
Spring Return
Spring return actuators typically have a single port to both pass
and exhaust the compressed gas. Unlike double acting actuators,
spring return actuators are driven in a single direction and, when
the gas is exhausted, use springs to return to the original
position. The valve can be installed to return to either the closed
or open position; the more common mode is normally closed.
Technical Data of Pneumatic Actuator Valve:
| |
Air Pressure: 0.4 to 0.8 MPa | Electric Actuator Power: 380VAC, 220VAC, 110VAC (50/60Hz), 24VDC Electric Actuator Input: 4-20mA. DC |
Control Medium: Neutral Gas, Air |
Ambient Temperature: -20 to +60℃ |
Medium Temperature: -20 to +180℃ UPVC Ball Valve: -10 to +45℃ CPVC Ball Valve: -15 to +90℃ |
Normal Seal's Working Temperature: PTFE (-20 to +180℃), TFM (-30 to
+230℃) |
Manufacturing Standard: GB, ISO, ANSI, BS, DIN |
Pneumatic Ball Valves for you to choose:
Pneumatic Butterfly Valves for you to choose:
Accessories for Pneumatic Actuator Valves:
 |  |  |
| Pneumatic Actuator | Limit Switch | Namur Solenoid Valve |
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