Pneumatic high-temperature control valve

◆ Nominal diameter: DN20-DN200

◆ Valve body material: stainless steel, cast steel, cast iron, forged steel

◆ Control methods: Switch type, regulating type, pneumatic control, electric control

◆ Product Overview:

A regulating valve generally refers to a control valve. A control valve is composed of two main assemblies: the valve body assembly and the actuator assembly (or actuator system), and is divided into four major series: single-seat series control valves, double-seat series control valves, sleeve series control valves and self-operated series control valves. The variations of the four types of valves can lead to a great many different applicable structures, each with its own specific applications, characteristics, advantages and disadvantages.

◆ Features:

There are various types of control valves, and they are suitable for different occasions. Therefore, the type of control valve should be reasonably selected according to the requirements of the process production.

2. Pneumatic control valves are divided into two types: air-to-open and air-to-close. The air-to-open control valve is closed in the fault state and opens in the fault state. Some auxiliary equipment can be used to form a position-holding valve or to self-lock the control valve, that is, when a fault occurs, the control valve maintains the valve opening degree before the fault.

3. The air-to-open and air-to-close methods can be achieved through the types of forward and reverse acting actuators and the combination of positive and reverse valves. When using a valve positioner, it can also be realized through the valve positioner.

4. Various control valves have different structures and each has its own characteristics.