(1) The commonly used rust removal methods are divided into the following five points A common method for removing rust on surfaces of various finishes Kind: Metal surface finish is commonly used as a rust removal method 1. Use grinding wheels, wire brushes, scrapers, and gauze to pickle and remove rust 21-4 Dip machine with non-metallic scraper, oil stone or gauze with particle size 150 ...

The Fisher FISHER control valve reduces maintenance costs, minimizing the effects of metal corrosion damage due to water spray. Learn about flash evaporation in control valves Flickering occurs when a liquid flows through a control valve and evaporates and retains the vapor. Scintillation with choke flow and cavitation have ...

Electric control valves have been more and more widely used in various industrial control systems due to their high control accuracy, convenient installation and commissioning. However, in the process of use, there are also some problems that plague field instrument personnel, that is, the problem of valve leakage. Here we will explore the electric ...

1. Interfacial leakage of mechanical seals: a kind of leakage between the surface of the sealing ring (oil seal, sealing ring, gasket, packing) and the surface of the contact parts. Such as leakage between the flange and the gasket, between the packing material and the shaft or the packing box. 2. Penetration and leakage of mechanical seals: medium ...

There are two types of leakage between the valve core and the valve seat: 1. Damaged leakage; 2. Valve position leakage. For metal-sealed valves, breakage leakage refers to the default sealing line between the valve core and the valve seat, which makes the sealing line disconnected.

Use and Maintenance: 1. It is recommended that the user unit appoint a special person to be responsible for the use and maintenance 2. Regular maintenance 1-2 times a year is the best way for the solenoid valve to work reliably and live long. The following 4 conditions inside the solenoid valve are the reasons that hinder the normal operation of the solenoid valve and shorten the life of the solenoid valve. ⑴ ...

In the use of Fisher Valve Positioner Control Valve, we may encounter some different situations, such as: positioner signal conditioner force instability, pneumatic valve source regulator force instability, positioner without pneumatic valve, etc., the following editors will introduce these situations. Fisher Fisher ...

We often see such a scene on the steam pipeline, the pipe section that can be "straight" suddenly bent a section, I believe that many people who have seen it will have such doubts like me, this is not "painting snakes", in fact, the design of the pipeline operation has its own original...

Gate valves usually have single ram, double ram, wedge, parallel and other structural designs, among which wedge double ram (Z42, Z62 series) and wedge elastic ram (Z40, Z60 series) are widely used, the former when the gate is closed, the gate automatically fits the valve seats on both sides, and automatically compensates the processing position of the wedge angle.

With the investment in infrastructure in developing countries, many industries and fields are quietly undergoing major changes, such as pipeline industry, petroleum, chemical industry, so the role of valves in the industry is also reflected. At present, fluorine-lined ball valves have been ...

Seven common problem solutions for pneumatic butterfly valves: 1. The butterfly valve is installed in the pipeline, and the best position is vertical, but it cannot be reversed. 2. It is recommended to use the special flange of the butterfly valve, that is, the HGJ54-91 socket welded steel flange. 3. Butterfly valve stem installation ...

At present, 19 domestic enterprises have obtained the civil nuclear pressure equipment planning and production qualification license issued by the National Nuclear Safety Administration, which can plan and produce nuclear-grade valves. The types of planning and production valves include gate valves, globe valves, check valves, ball valves, butterfly valves, tension spring safety valves, and regulators.

In order to successfully automate a process, it is important to ensure that the valve itself meets the special requirements of the process and the medium in the pipeline. Usually the production process and process medium determine the type of valve, the type of spool, and the structure and material of the trim and valve. Valve selection is good ...

Electric actuator, also known as valve electric device, it is a name in different industries, called valve electric device in the industrial pipeline valve industry, and called electric actuator in the instrument industry, but now there is no clear distinction in the industry.

The Fisher FIELDVUEDVC6200p digital valve controller is a PROFIBUSPA communication instrument with a non-link, non-contact stroke feedback. In addition to the traditional conversion function of digital signals to pneumatic output pressure, the DVC6200p digital valve controller provides easy access to information critical ...

First of all, we must know a concept, what is a conditioning valve, that is, a control valve. Control devices for regulating fluid flow in industrial process control systems. It can adjust the process parameters such as pressure, temperature, flow rate, and liquid level of the fluid by manipulating the fluid flow Conditioning valve composition: valve body ...

When the Fisher controller is in use, we need to understand the classification of the controller and the control method of the controller. Through an in-depth understanding of the controller, we will be more proficient and convenient in use. Then the editor below will introduce these two aspects for us. Fisher Controller's ...

1. Compressed filler (1) Plant fiber filler Made of hemp or cotton impregnated with oil, wax or other impermeable materials for use on low-pressure valves below 100°C. It is suitable for water, ammonia and other media. (2) Asbestos fiber filler Asbestos fibers have good heat resistance, can resist weak acids, strong alkalis, ...

Solenoid valves are selected for different media 1. Corrosive medium: it is advisable to choose plastic king solenoid valve, all stainless steel solenoid valve; For the strong corrosive medium must be selected isolation diaphragm type, such as: neutral medium, it is also advisable to choose copper alloy as the solenoid valve housing material, otherwise, there are often rust chips falling off in the valve housing.

The Fisher 3610JP pneumatic positioner is used in conjunction with a double-acting rotary actuator to position control valves for throttling applications. These rugged positioners provide valve position proportional to the pneumatic or DC current input signal and are mounted integrally to the actuator housing. specification ...

In the past operation of natural gas pressure regulating system, terminal equipment such as pressure regulating cabinets, pressure regulating boxes, and pipelines in the distribution network have always been a relatively weak part of the monitoring means. As a result, problems such as non-troubleshooting and emergency gas shutdown accidents also make consumers and operators feel painful. Meanwhile...