Professional Industrial Valves Manufacturer

Electric control valve selection need to know

by:Mech     2020-10-10

regulator belongs to one of the types of valves, and the inside of the valve segment types have a lot of kinds, if from the body form, there is direct single-seat, pass-through two-seater, angular, diaphragm, small flow rate, tee, eccentric rotating, butterfly, sleeve, spherical, etc. Electric control valve selection depends mainly on the following factors: the pipeline medium ( To determine whether corrosion) Medium temperature ( Judge seal) Pipe valve before and after valve pressure and differential pressure. Driving mode: electric, pneumatic. Maximum flow coefficient. The minimum flow, maximum flow value. In our selection of concrete when the choice, the valve body, can consider to do the following: ( 1) Mainly based on the selected valve core shape of flow characteristic and factors such as unbalanced force. ( 2) Wear resistance when fluid medium is suspending liquid containing high concentrations of wear particles, the interior of the Industrial Valves material is hard. ( 3) Corrosion resistance due to the corrosive medium, to choose structure simple valves. ( 4) Medium temperature, pressure, when the medium temperature, high pressure and large, should choose the valve core and valve seat materials by temperature, pressure changes small valves. ( 5) Prevent flash flash and cavitation and cavitation produced only in a liquid medium. In actual production process, flash and cavitation will form the vibration and noise, shorten the service life of the valve, therefore when selecting valves should prevent the valve from flash and cavitation.

the role of regulating valve way to choose the way to the role of regulating Industrial Valves only have when choosing pneumatic actuators, the role of way through positive and negative effect and positive effect of the valve actuator portfolio formation. There are four that are positive (combination Gas closed type) , positive and negative, Gas type) And anyway, Gas type) And reflect ( Gas closed type) By the four combinations have spirit way on and off the function of regulating Industrial Valves two kinds. For the choice of the ways of regulating valve function, mainly from three aspects: a) Process safety; b) The characteristics of medium; c) Ensure product quality, the economic loss minimum

control valve actuators in order to make the choice of the regulator to work properly, with the implementation of the mechanism to produce enough output force to guarantee high sealing and opening of the valve. For double-acting pneumatic, hydraulic, electric actuators, are generally not reset spring. The size of the force has nothing to do with its direction, therefore, the selection of the actuator is the key to find out the biggest output force and rotational torque of the motor. For single acting pneumatic actuators, the output power is associated with the opening of the valve, regulating valve on the emergence of the force will also affect the movement characteristics, therefore needs to be established throughout the regulator of the opening range force balance.

enforcement agencies determine the type of the actuator output force is determined, according to the process using the environment requirements, choose the corresponding actuator. For the scene have explosion-proof requirements, should choose pneumatic actuators. From the aspects of energy saving consideration, should try to choose electric actuators. If the adjustment of high precision, can choose hydraulic actuators. Such as power plants transparent machine speed regulation, the refinery catalytic unit reactor temperature regulation control and so on.


Shenzhen Mech Valve Trading Co., Ltd. has an array of branches in domestic for munufacturing resilient seated gate valve.
Satisfying our customers with the appropriate level of quality is a primary goal and a fundamental element as flow control valve of our business mission.
wedge valve has its grasp on oversees market also and has a very good repute.
It is essential to know the basic functioning of to help us understand the components and the part they play.
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