The main drive is made up of the spur gear pair and worm gear pair and the motor can be dismantled independently.

Complete sealing design with O-rings or lip sealing rings ensures 920 series be well sealed and can be easily dismantled and assembled.

The Hand/Auto switch is adopted in all products, and the shift from manual to motor operation is semiautomatic of electric priority. The handwheel operation of 9202 base and above require minimal effort for the design of high-speed class switching. The self-locking effect is maintained even during manual operation.

9200 and 9201 units supply a top mounted handwheel which can operate the valve quickly for the 1:1 transmission. 9202 base and above supply a side mounted handwheel with small force which drive the valve by the worm and worm wheel.

For the products with output drive type of thrust, the independent thrust component is supplied to withstand the bi-direction thrust from the valve stem. So the main house need not to withstand the axial thrust of the drive sleeve.

The counter used in the limit switch ensures reliable running without interference.

The large capacity self-cleaning limit switches can automatically clean the contact surface to improve the contact reliability.

Modular design: Mounting the control package on the basis of the basic type can make 920 series be mechatronics products.

Stem mantle: The steel mantle to prevent the rising valve stem from accidental damaging.

Additional limit switches: Add a set of limit switches for the intermediate position control both in open and close direction.

Two-wire system valve position transmitter VPT2: Input 24VDC signal by two wire and feedback 4~20mA signal at the same time(percentage).

Four-wire system valve position transmitter VPT4：Input 220VAC signal by two wire, feedback 4~20mA signal by other two wire(percentage).

Phase protector JDX: It is used for integrated type with three-phase ac power supply. The phase protector real-time monitor the three phase power, which can prevent the valve running to the wrong direction and running short of phase due to phase sequence error.