HongTaivalve-Aluminium pneumatic actuator with acessories(limit switch/solenoid valve)-size dn15-dn150-HTV-APA001

Descripción

Pneumatic valve actuator
Pneumatic actuator is an actuator that uses gas pressure to drive the opening and closing or regulating the valve, also known as a pneumatic actuator or pneumatic device, but it is generally called a pneumatic head. Pneumatic actuators are sometimes equipped with certain auxiliary devices. Commonly used valve positioner and handwheel mechanism. The function of the valve positioner is to use the feedback principle to improve the performance of the actuator, so that the actuator can achieve accurate positioning according to the control signal of the controller. The role of the handwheel mechanism is that when the control system is due to power failure, gas shutdown, no output of the controller or the actuator failure, it can be used to directly manipulate the control valve to maintain the normal production

The difference between single and double action of pneumatic head
Different working principles: The pneumatic head  single acting  The use of gas pressure  force can only complete a single operation in the gas path (usually closed), while the double acting  requires the action of gas pressure in two directions, which can control the positive and negative operations in the gas path.
Different uses: The pneumatic head single action is suitable for occasions where only a certain operation (generally closed operation) is controlled, such as automatic dust collector and valve switch ; The double action is suitable for the occasions that need to control the positive and negative operation, such as the drill pneumatic swing arm , clamping die  and rotating  and other industrial fields. In addition, the operating speed of the double acting pneumatic head is faster than that of the single acting pneumatic head

In the use of pneumatic valves, in order to optimize its performance and improve the efficiency of use, it is usually equipped with some auxiliary components. These components include air filters, reversing solenoid valves, limit switches and electrical positioners. Among them, the air filter, pressure reducing valve and oil mist three air source processing components are combined together to form a pneumatic triplet, their role is to purify, filter and decompress the air source into the pneumatic instrument to ensure that the instrument gets the rated air source pressure, similar to the function of the power transformer in the circuit. Regarding the types of pneumatic valve accessories, we have the following options: – Double-acting pneumatic actuators for two-position control of the opening and closing of the valve (double-acting).

Regarding the types of pneumatic valve accessories, we have the following options: – Double-acting pneumatic actuators for two-position control of the opening and closing of the valve (double-acting). – Spring return actuator, the valve will automatically open or close when the circuit or gas path is cut or faulty (single action). – Single electronically controlled solenoid valve, which controls the opening or closing of the valve when the power is supplied, and performs the opposite operation when the power is off (explosion-proof models are available). – Dual electrically controlled solenoid valve with two coils to control the opening and closing of the valve, and with memory function (explosion-proof models are available). – Limit switch echo device, capable of remote transmission of valve switch position signal (explosion-proof model).