Wherein the housing is composed of an upper case and a lower shell; the circuit control module is mainly a circuit board, and the circuit control module is a circuit board, the circuit control module is a circuit board, The circuit board is provided with a speed detection sensor, the circuit control module and the driving execution module are connected with the status indicating module; the status indicating module comprises an LED indicator and an LED light guide hole, the LED indicator is arranged on the circuit board, the LDE light guide hole is arranged at The gear module is arranged in the gear box, including the gear one, the gear two, the gear three, the gear box, the gear box, the gear wheel, Valve Control Actuators the gear wheel and the stainless steel shaft. A stainless steel shaft is provided with a spring bracket and a spring. The outer shell is connected with a nut fixing bracket and a nut fixing bracket Connect the coupling nut; the manual adjustment knob is set on the housing. Valve Control Actuators The utility model has the advantages of precise micro adjustment, low noise, long service life and intuitive visualization.
A valve driver is a device used to operate a valve and connect it to a valve. The device can be driven by a power source in the form of manual, electric, pneumatic, Valve Control Actuators hydraulic or its combination, and its motion can be controlled by the magnitude of the stroke, torque or axial thrust. The choice of the valve driver is based on the type and performance of the valve driver, Valve Control Actuators depending on the type of valve, the operating specifications of the device and the position of the valve on the line or device.
Valve drive according to the movement can be divided into straight and angular travel two. Straight drive device that is multi-rotary valve driver, Valve Control Actuators mainly applicable to all types of gate valve, globe valve and throttle, etc .; angular travel device that is only 90 ° corner rotation part of the rotary drive, mainly for all types of Ball valve, butterfly valve and so on. The same time as
The valve driver can be divided into manual (handle hand wheel type, spring lever type), electric (electromagnetic type, electric type), pneumatic (diaphragm type, cylinder type, blade type, air engine type, film and ratchet combination type) , Hydraulic (hydraulic cylinder, hydraulic motor), linkage (electro-hydraulic linkage, gas-liquid linkage), and other forms.
In all types of valve actuators, the electric device dominates, Valve Control Actuators it is mainly used in closed-circuit valves.
Pneumatic devices have been widely used in explosion-proof applications, Valve Control Actuators including thin-film pneumatic devices are mainly used in the control valve. The hydrodynamic device is widely used on natural emergency shut-off valves and wellhead ejectors on long-haul pipelines.
Manual handwheels, most of which are mounted on low, medium pressure shutoff valves and gate valves;
Handle is used for high pressure and high pressure cut-off valve, Valve Control Actuators ball valve and cock and other valves.
Gas-liquid linkage device, used for gas pipeline, no power of the field, its power source that is the gas pipeline.