Electric Actuator Type - Standard switch type(B) Valves ON/OFF is conducted by switch circuit with outputting active contact signal which can show a fully open or fully close valves status． - Passive contact type(S) Valves ON/OFF is conducted by switch circuit with outputting passive contact signal which can show a fully open or fully close valve status.  - Position signal type (K)

The opening or closing operation is realized by switching"open"or"close" the circuit, outputting a relative group of open or close degree current signals．
- Opening degree singnal type(R)

The opening angle of valves is controlled by switch circuit,with potentionmeter outputting resistance signal corresponding valves opening angle．
Modulating type(A)
Intelligent regulation and control are conducted by receiving the standard signal 4—20mA.DC，
0—10V.DC or 1—5V.DC outputted by the computers or instruments,standard feedback signal 4—
20mA.DC is also outputted．

-  Torque from 6N.M to 2000N.M
-  Movement time from the 7s to the 100S