Wuzhong instrument control valve caliber selection steps

1. In the case of interlocking action of pneumatic valve equipment, the valve orientation should have the following situations: The EC air supply is discarded and the valve is in a closed position FO__ air source is discarded, and the valve is in the opening position FL-_ The air source is lost, and the valve is in the time position and has been insisting FL ...

The structure of the adjustable pressure reducing valve is composed of a main valve, a pressure feedback system, and a control pipeline. The main valve is composed of main parts such as valve body, diaphragm seat, valve cover, diaphragm, valve stem, valve plate, etc. The adjustable pressure reducing valve is installed on the one-way water supply pipeline in the city, which can reduce the upstream (inlet) pressure of the higher valve.

The structure of the thermocouple is to ensure the stable operation of the thermocouple, and the requirements are as follows: The two thermoelectrodes that make up the thermocouple must be strong on the weld to maintain good quality.

On December 2, 2019, the China-Russia East Route Natural Gas Pipeline Project was officially put into operation. The large-diameter pressure regulator jointly developed and manufactured by Wu Zhong and China Petroleum Pipeline Branch was put into use at Changling Natural Gas Transmission Station in Jilin Province and successfully ventilated. ...

(1) The sealing pair is spherical, disc eccentricity rotation planning The valve sealing pair is spherical planning, and the sealing effect is good. Together with the disc rotation center is planned to have a bias with the center of the valve seat, so the valve disc and the valve seat form a bias cam wedge sealing effect when closed, the valve ...

1. The valve position of the electric actuator is lost: 1) Battery power is lost When the incremental encoder is selected to measure the stroke, it is necessary for the fulfillment mechanism to have a battery as an auxiliary power supply, the AC power supply disappears, and the change of the valve position of the electric actuator can still be detected by the incremental encoder.

1. System overview The valve automatic control system controls the solenoid valve equipment placed in the field by announcing the instructions of the control service center in a wireless way, and then realizes the opening and closing of the solenoid valve, and the opening and closing status of the valve, the operation status, whether the equipment is online, historical data inquiry, etc.

The conditioning valve, also known as the control valve, is a device that uses power operation to change the process parameters such as the flow, pressure, temperature, and liquid level of the conditioning pipeline medium in the field of industrial automation process control. It is mainly composed of the operating fulfillment mechanism and the regulating valve body, which receives relevant signals and changes the opening of the valve.

The actuator of the control valve has pneumatic type, electric type and electro-hydraulic linkage type, and the pneumatic equipment is divided into barrier type and cylinder type. Depending on the action when the operating signal and the drive source disappear, the actuator has a forward type, a reverse type, a non-directional type, and a persistent type. The positive type is used in the operation signal and drive ...

G2010 ball valve for long-distance pipeline is designed for the transportation of long-distance pipeline media, which is a typical long-distance pipeline ball valve, which is suitable for various oil, natural gas, city gas pipelines, and can also be used in the equipment of general chemical products. The valve is completely in line with the United States Petroleum Institute API in terms of performance...

Classified by role and use (1) Shut-off valve: The shut-off valve, also known as the closed-circuit valve, has the effect of turning on or cutting off the medium in the pipeline. Shut-off valves include gate valves, globe valves, plug valves, ball valves, butterfly valves and diaphragms. (2) Check valve: Check valve is also known as check valve or check valve.

The mechanical deflection angle of the movable part of the surface can be measured and converted, and the size to be measured is directly indicated by the indicator, so it is also called the direct-reading appearance. According to the working principle, the indication surface can be divided into magnetoelectric system appearance, electromagnetic system appearance, electric system appearance and ...

Pneumatic control valve is one of the instruments widely used in petrochemical enterprises. It is of great significance to ensure the normal operation and safe production of the process equipment by operating accurately and normally. Therefore, it is necessary to strengthen the maintenance of pneumatic control valves. First, the key points to check the location during maintenance ...

1. According to the requirements of different flow characteristics, the electric sleeve control valve can be easily replaced with a linear flow characteristic sleeve or an equal percentage of flow characteristic sleeve, and can replace the sleeve with different flow capacity according to the different requirements of flow size. 2. Electric sleeve simple control valve in high temperature ...

From simple shut-off valves to a wide range of valves in very complex automatic control systems, the varieties and standards are very complex. The valve can be used to control the activities of various types of fluids such as air, water, steam, various corrosive media, oil, liquid metal and other media. It is understood that from 2015 to 2018, ...

Nowadays, the valve market is mixed, and illegal traders pretend to be innovative valves to be shoddy in order to make huge profits, which brings great safety risks to the installation project. Therefore, it is necessary to introduce to you the inspection of innovative valves. At present, the valve market dealers mainly exist in the valve counterfeiting ...

1. Why does the double-seat valve vibrate briefly during small opening operation For a single core, when the medium is a flow-open type, the valve has good stability; When the medium is a flow-closed type, the stability of the valve is poor. The double-seat valve has two spools, the lower spool is in the flow closed and the upper spool is in the flow open, so that in the small opening ...

Classification of valves, types of structures, functional applications, pressure levels, temperature classifications, valve body data classifications, and general classifications The types of valve products are complex, and the statements are inconsistent, some are divided according to the use (such as chemical valves, oil valves, oilfield valves, power station valves, etc.), and some are according to the medium.

When using stainless steel multistage pumps, it is first necessary to confirm the usefulness and functional parameters of the multistage pump and select the pump type. Criteria and basis for the selection of multistage pumps: 1. Make the type and function of the selected multistage pump fit the process parameters such as flow, head, pressure, temperature, NPSH, suction stroke, etc.

Valve is a device used by Gongliang to control the direction, pressure and flow of fluid in the fluid system. A valve is a device that allows the flow or suspension of the medium (liquid, gas, powder) in the piping and equipment, and can control its flow. The valve is a controlling part in the pipeline fluid delivery system, ...