Marine Control Valve Assembly and Hatch Cover Hydraulic Control Valve
No.TTS：1325-9200
The Control valve consists of two main assemblies: the valve body assembly and the actuator assembly (or actuator system), which are divided into four series: single-seat series control valves, two-seat series control valves, sleeve series control valves and self-operated series control valves. The variants of the four types of valves can lead to a large number of different applicable structures, each with its own special applications, characteristics, advantages and disadvantages. Although some control valves have a wider range of application conditions than others, control valves are not suitable for all conditions to jointly build the best solution to enhance performance and reduce costs.
Flow Control Valve，Seal Kit For Valve，Directional Valve，
The working principle of the control valve mainly involves changing the fluid flow with the help of power operation by accepting the control signal output of the regulating control unit. This valve is composed of body assembly and actuator assembly, including single-seat series, two-seat series, sleeve series and self-propelled series, each type has its special application, characteristics and advantages and disadvantages.
The working principle of the electric control valve is mainly to drive the spool through the electric actuator, which is adjusted according to the pressure and flow changes in the pipeline. The sensor senses these changes and transmits them to the electric actuator, which drives the spool to adjust accordingly according to the signal of the sensor to keep the pressure and flow rate in the pipeline stable.
The working principle of the oil pressure control valve involves high-precision machining and strict quality control to ensure its stable and reliable performance. This type of valve is usually installed at the outlet of the pump to prevent pressure impact from affecting the normal operation of the pump, but also to prevent the system oil flow back through the pump to the tank when the pump is not working.
These control valves play a key role in industrial applications by precisely controlling the flow, pressure and direction of fluids, enabling optimal system operation and improved energy efficiency.
There are many kinds of valve bodies of control valves, commonly used are straight single seat, straight double seat, Angle, diaphragm, small flow, tee, eccentric rotation, butterfly, sleeve, ball and so on. In the specific choice, you can do the following considerations: 1. Mainly according to the selected flow characteristics and unbalanced force and other factors to consider. 2. When the fluid medium is a suspension containing a high concentration of wear particles, the internal material of the valve should be hard. 3. Because the medium is corrosive, try to choose a valve with a simple structure. 4. When the temperature and pressure of the medium are high and change greatly, valves with small temperature and pressure changes should be selected for the materials of the spool and seat. 5. Flash evaporation and cavitation are only produced in liquid media. In the actual production process, flash and cavitation will form vibration and noise, shorten the service life of the valve, so the valve should be prevented from flash and cavitation when selecting the valve.
Peculiarity 1. There are various types of control valves, and their application occasions are different, therefore, the control valve type should be reasonably selected according to the requirements of the process production process.
2. Pneumatic control valves are divided into two categories: gas open and gas close. The gas opening control valve is closed in the fault state, and the gas closing control valve is opened in the fault state. Some auxiliary equipment can be used to form a holding valve or to make the control valve self-locking, that is, the control valve to maintain the valve opening before the fault.
3. The way of gas opening and gas closing can be realized by the combination of positive and reaction actuator types and positive and reverse valves, and can also be realized by valve positioner when using valve positioner.
4. Various control valves have different structures and characteristics.
