The main structure of a ball valve is to use a ball with a circular through-hole as the opening and closing element, and the ball rotates with the valve stem to achieve the opening and closing action of the valve. The structure of a ball valve is similar to that of a plug valve, and some people also refer to it as a spherical plug valve. It consists of a sphere and two valve seats (sealing rings) to form a sealing pair. The commonly used materials for valve seats are polytetrafluoroethylene and hard alloys. The ball valves produced by Shanghai Meiyan Yi Pump Valve have a wide range of applications, with working pressures ranging from high vacuum to high pressure (up to 40 megapascals), working temperatures ranging from -196 to+450 ℃, and a maximum diameter of 1000 millimeters. According to the sealing structure principle of ball valves, ball valves are divided into floating ball valves, fixed ball valves, etc. Floating ball valves mainly rely on fluid pressure to press the ball onto the valve seat at the outlet end, forming a floating seal, thus limiting the pressure and diameter used. The ball of a fixed ball valve is supported by two upper and lower bearings installed on the valve body, and the position of the ball is fixed. The sealing effect is achieved by the spring and fluid pressure pressing the valve seat against the ball, so the opening and closing torque is much smaller than that of a floating ball valve, which is suitable for high-pressure and large-diameter applications. Three way ball valves and four-way ball valves are used for fluid reversing pipelines, with T-shaped and L-shaped options.

Butterfly valve is a valve that uses a circular butterfly plate as the opening and closing element and rotates with the valve stem to achieve the opening and closing action. The butterfly valves produced by Shanghai Meiyan Yi Pump Valve have the advantages of simple design structure, rapid opening and closing, small pipeline area occupation, light weight, and small opening and closing torque. According to different sealing requirements for butterfly valves, they can be designed to have functions of cutoff, adjustment, or both cutoff and adjustment. The maximum diameter of the butterfly valve of Shanghai Meiyan Yi Pump Valve can reach 6000mm. Large diameter butterfly valves or butterfly check valves are generally equipped with slow closing damping devices to prevent water hammer from causing valve accidents. The butterfly plate of butterfly valves has various structures, mainly including midline butterfly valves and eccentric butterfly valves. And the sealing forms are divided into soft sealed butterfly valves, hard sealed butterfly valves, as well as clamp butterfly valves, flange butterfly valves, butt welded butterfly valves, electric butterfly valves, pneumatic butterfly valves, hydraulic butterfly valves and other different models and specifications. The main difference between the center line butterfly valve and the eccentric butterfly valve lies in the position of the valve stem. The fluid resistance of the center symmetrical plate is relatively small, but the sealing surface is prone to abrasion and leakage, so it is mostly used for flow regulation; The sealing performance of the inclined plate is good, but it is difficult to process; The sealing performance of the offset plate is also good, and it is easy to process and maintain, but the fluid resistance is relatively high. The following product images are for selection reference only.

Gate valves are mainly valves that use gate plates as opening and closing components and move vertically along the axis of the valve seat to achieve opening and closing actions. The main advantages of gate valves are smooth flow channels, low fluid resistance, and low opening and closing torque; The main disadvantages are that the sealing surface is prone to scratches, the opening and closing time is long, and the body shape and weight are large. The gate valves produced by Shanghai Meiyanyi Pump Valve are widely used in pipelines, and the developed large-diameter gate valves can reach 1200mm. The characteristic of a rising stem gate valve is that the valve stem drives the gate to rise and fall together, and the transmission thread on the valve stem is exposed outside the valve body. Therefore, the opening and closing position of the valve can be intuitively determined based on the direction and position of the valve stem movement, and the transmission thread is easy to lubricate and not corroded by fluids, but it requires a large installation space. On the contrary, the transmission thread of the concealed stem gate valve is located inside the valve body, and during the opening and closing process, the valve stem only rotates without moving (the gate moves up and down inside the valve body). Therefore, when the valve is opened, the height dimension of the valve is small, requiring only a small installation space. Hidden stem gate valves are usually equipped with switch position indicators above the valve cover, which are suitable for environments with small spaces and high dust content such as ships and pipe trenches. Gate valves are also available in various models and specifications, including double gate and single gate, wedge gate and flat gate, soft seal and hard seal, electric and hydraulic, and knife gate valves. The following pictures are for reference only.

A globe valve is a valve that uses a valve disc as an opening and closing element and moves along the axis of the valve seat, mainly used to cut off fluids. It can also be used to regulate flow in situations where the regulation performance is not high. Globe valve is a commonly used valve on pipelines. There are three common forms of valve body flow channels for globe valves: straight through, straight through, and right angle. Straight through globe valves have high fluid resistance, and in order to reduce fluid resistance, straight through (Y-shaped) globe valves and right angle globe valves have emerged. DC type is commonly used for fluids containing solid particles or high viscosity. Right angle type is used for high and medium pressure right angle pipelines. The main advantage of the globe valve produced by Shanghai Meiyanyi Pump Valve is that it opens and closes quickly, and there is generally no relative sliding between the sealing surfaces during the opening and closing process, making it less prone to wear and tear; The maintenance of valve disc and valve seat is convenient. The main other classification forms of globe valves are generally distinguished by materials, including various models and specifications of special materials such as carbon steel globe valves, forged steel globe valves, stainless steel globe valves, forged stainless steel globe valves, chromium molybdenum steel globe valves, etc. The following product pictures are for reference only.

A check valve is a one-way valve that can automatically prevent fluid backflow, also known as a one-way valve. Usually, fluid under pressure causes the valve disc of a valve to open and flow from the inlet side to the outlet side. When the pressure on the inlet side is lower than that on the outlet side, the valve disc automatically closes the channel under the action of fluid pressure and its own gravity, preventing fluid backflow from causing damage to the equipment in front of the valve. The check valves produced by Shanghai Meiyanyi Pump Valve are mainly divided into three categories: lift type, swing type, and butterfly type. The valve body of a lift check valve is often similar to that of a globe valve, and its fluid resistance is relatively high. This type of check valve is a high-pressure small-diameter valve, often using a spherical valve disc. Swing check valves have low resistance to fluids and are generally suitable for small and medium-sized, low-pressure, and large-diameter pipelines. The shape of butterfly check valve is similar to that of butterfly valve, with single and double lobes. It has a simple structure and low resistance to fluids. Pipelines that are prone to water hammer can use micro resistance slow closing check valves with buffering function to extend the closing time, slow down the speed caused by water hammer, and avoid damage to the equipment in front of the valve caused by water hammer when the check valve closes too quickly. The check valves produced by Shanghai Meiyan Yi Pump Valve come in different models and specifications such as cast steel, carbon steel, stainless steel, and forged steel materials. The following product pictures are for reference only.

There are various forms of channels for plug valves, and the common straight through type is mainly used to cut off fluids. Three way and four-way plug valves are suitable for switching between multiple pipelines such as fluid direction change. Plug valves mainly use plug bodies with through holes as opening and closing components. The plug body rotates 90 degrees with the valve stem to achieve opening and closing actions. A small unfilled plug valve is also known as a "cock". The plug valve produced by Shanghai Meiyanyi Pump Valve has a simple structure, quick opening and closing, and low fluid resistance, making it one of the earliest developed valves. In order to expand the application scope of plug valves, we have developed a new structure of oil lubricated plug valves. Specially made lubricating grease is injected from the top of the plug body into the space between the valve body taper hole and the plug body, forming an oil film to reduce the opening and closing torque, improve sealing performance and service life. Its working pressure can reach 64 megapascals, the highest working temperature can reach 325 ℃, and the maximum diameter can reach 600 millimeters. Plug valves mainly include straight through plug valves, three-way plug valves, four-way plug valves, inverted oil sealed plug valves, and are also divided into T-type and L-type models and specifications. Large plug valves are also known as conventional valves and are used in pipeline equipment such as aviation kerosene, light oil, natural gas, liquefied gas, pipeline gas, chemical media, etc. The following product pictures are for reference only.

Safety valves are mainly used as safety protection valves to prevent damage to equipment such as boilers, pressure vessels, and pressure pipelines due to overpressure. When the fluid pressure of the protected container or pipeline reaches a specified value higher than the normal working pressure (i.e. valve opening pressure), the safety valve automatically opens, discharges some fluid, and causes the pressure to drop. When the pressure drops to a set value slightly below the normal working pressure (i.e. valve reseating pressure), the safety valve will automatically close, stop discharging fluid, and maintain sealing. The safety valves produced by Shanghai Meiyan Yi Pump Valve are classified into heavy hammer, spring, and pilot operated types based on the different loading methods of the valve disc. The heavy hammer type is divided into direct heavy hammer type and lever heavy hammer type. The spring type safety valves of Shanghai Meiyanyi Pump Valve are also divided into micro opening and full opening, closed and open types. They are widely used in the industrial field and can be designed in various structural forms to meet different usage requirements. They are also suitable for situations with high displacement, high pressure, high temperature, back pressure, and particularly strict sealing requirements. Safety valves can usually be divided into two categories based on the phase of the fluid used: one is for liquids, with the same inlet and outlet sizes and a smaller opening height of the valve disc (micro opening type); The other type is used for steam and gas, with an outlet size larger than the inlet size and a larger opening height of the valve disc (fully open), which opens quickly.Selection precautions: ① The discharge capacity of the safety valve must be greater than the safe discharge capacity of the container; ② For containers that require stable operating pressure, consideration should be given to using micro opening safety valves (such as compressor cylinders); ③ High pressure vessels, large vessels, and medium and low pressure vessels with large safety release capacity should use fully open safety valves (such as reactor equipment).

A drain valve is mainly a diversion valve that automatically removes condensed water and air from steam pipelines or steam equipment, and prevents steam from passing through, while effectively preventing steam leakage. A drain valve is also known as a trap or automatic drain. Condensed water and air in steam are harmful substances that affect heat exchange and pipeline capacity. Removing them can improve the efficiency of steam equipment, save steam, and reduce fuel consumption. The structural types of steam traps produced by Shanghai Meiyan Yi Pump Valve can be divided into various models and specifications according to their operating principles, such as thermal static steam traps, thermal dynamic steam traps, inverted bucket steam traps, metal sheet steam traps, floating ball steam traps, and parent-child steam traps. They have been widely used in various industrial steam pipelines for energy-saving purposes. The following pictures of the drain valve are for selection reference only.

Needle valves have the characteristics of high applicable pressure, multiple structural forms, easy installation and disassembly, tight connection, and high fire prevention, explosion prevention, and pressure resistance. The needle valve products produced by Shanghai Meiyanyi Pump Valve have the characteristics of good sealing performance and high quality at a low price. Needle valves are a type of globe valve in the series, and their working principle is the same. The usage situation depends on the site conditions. Each valve corresponds to a certain working pressure. Generally, globe valves can be used for pipelines with larger diameters, while needle valves are generally used for pipelines with small diameters and high pressures. The needle valve connection methods produced by Shanghai Meiyan Yi Pump Valve include various specifications and models such as internal thread, external thread, welded pipe, flange connection, internal and external thread, also known as instrument valve, instrument valve group, etc. The applicable pressure can reach up to 32Mpa or 15000psi. The following product pictures are for reference only.

Diaphragm valves are mainly block valves that use elastic diaphragm rubber or PTFE as opening and closing components and sealing components. The valve body is ridge type (weir type), and the ridge and diaphragm form the valve seal. The diaphragm is fixed around the periphery and divides the valve chamber into two parts that are not connected to each other. Below the diaphragm is a fluid channel. The valve disc, valve stem, valve cover and other parts are located on the upper part of the diaphragm, isolated from the fluid and not corroded by the fluid, while also preventing impurities such as rust from contaminating the fluid. Diaphragm valves do not require packing boxes and can achieve zero leakage of the medium. The diaphragm material is mainly made of rubber and fluoroplastic. The diaphragm valves produced by Shanghai Meiyanyi Pump Valve are particularly suitable for corrosive fluids and fluids that require cleanliness, such as acetic acid, synthetic fiber raw materials, and boiler softened water. There are mainly various models and specifications of manual diaphragm valves, pneumatic diaphragm valves, electric diaphragm valves, Y-shaped straight through (DC) diaphragm valves, sanitary grade special diaphragm valves, vacuum diaphragm valves, etc. The following product pictures are for selection reference only.

API valves refer to valves designed, manufactured, produced, and tested using American National Standards Institute (ANSI) or American Society of Mechanical Engineers (ASME) standards for all material grades, connection dimensions, testing and inspection standards, and valve parameter identification during production and manufacturing. The American standard valves produced by Shanghai Meiyanyi Pump Valve mainly include American standard gate valves, American standard globe valves, American standard check valves, American standard ball valves, American standard butterfly valves, plug valves, safety valves and other American standard series products. They are all produced and inspected according to API, ANSI, ASME and other standards, with stable and reliable quality. Various models and specifications of American standard valve products are exported to countries such as the Middle East, the United States, Europe, the Americas, and Central Asia, and have received unanimous praise from users. The following pictures are for reference and selection only. We welcome new and old customers to visit us.

German standard valves, Japanese standard valves, Russian standard valves, and European standard valves refer to valves designed, manufactured, inspected, and produced according to the standards established by the German DIN National Standards Association, the Japanese JIS Industrial Standards Association, the Russian GOST National Standards Association, the European Committee for Standardization (CEN), and the European Society for Petroleum Engineering (EUROP), as well as related standard materials. The main valves include ball valves, gate valves, butterfly valves, globe valves, check valves, safety valves, etc. Shanghai Meiyan Yi Pump Valve provides you with various international standard valve models, specifications, and pictures, including customized products of DIN German standard valves, JIS Japanese standard valves, COST Russian standard valves, EN European standard valves, and other international standard valves, with a complete range of types, specifications, and models. Welcome new and old users to send letters, call and purchase.

plunger valve is composed of components such as a valve body, valve cover, valve stem, plunger, handwheel, sealing ring, and hole holder. As the name suggests, the valve core of a plunger valve is cylindrical. When the handwheel is rotated, the plunger is driven by the valve stem to reciprocate up and down between two sealing rings, completing the opening and closing of the valve. The sealing form of a plunger valve mainly adopts an interference fit between the plunger and the sealing ring in the plunger valve. When the plunger is inserted into the inner hole of the sealing ring, the sealing ring is compressed and tightly holds the plunger sealing surface. At this point, the radial force generated by the interference seal ring will be greater than the fluid pressure, ensuring the sealing of the valve. When the plunger is pulled out, the sealing ring returns to its original state under the elastic action of the material. At this time, the fluid flows through the hole frame and the lower sealing ring towards the outlet. Due to the fact that the plunger valve sealing rings produced by Shanghai Meiyan Yi Pump Valve are made of new non-metallic materials, they have good mixed comprehensive performance and can withstand long-term high temperature and high pressure without losing elasticity. Moreover, the contact area between the plunger and the sealing ring is large. Therefore, the seal is reliable and durable. There are mainly two types of plunger valves: straight through plunger valves and angle plunger valves. The connection methods include internal thread connection, flange connection, and various models and specifications. The following pictures are for selection reference only, and the drawings provided by our company shall prevail.

Solenoid Valve mainly rely on the electromagnetic force generated by the power supply coil to drive the iron core to open and close the valve disc. Generally, solenoid valves are in a normally closed (or normally open) state before being powered on. After being powered on, the electromagnetic force of the coil drives the movable iron core, causing the valve to immediately open (or close). The main characteristics of the solenoid valve produced by Shanghai Meiyan Yipum Valve are rapid opening and closing action, simple structure, and easy operation. It is mainly used for automatic cut-off, connection, or switching of fluid flow direction. There are various structures of solenoid valves, generally divided into two types: unfilled and filled. Non filled solenoid valves do not require packing sealing, and the casing is filled with fluid. In addition to general fluids, they are more suitable for valuable or toxic fluids such as helium, fluorocarbons (see refrigerants), and ammonia. Filler type solenoid valves are mostly used for high temperature, low temperature, or highly corrosive fluids due to the use of fillers that do not come into contact with the casing and iron core. However, due to the presence of a stuffing box, the volume is relatively large and increases the friction force of the valve stem movement. The power supply of solenoid valves can be divided into AC and DC. The action of electromagnetic valves using alternating current is particularly fast, but it is prone to heating and has a small opening and closing force. Electromagnetic valves using direct current are less prone to heating and have greater opening and closing force, but their action is not as fast as alternating current. Electromagnetic valves can be divided into various specifications and models such as normally closed, normally open, pilot operated, high-temperature, two position three-way, two position five way, etc. The following product pictures are for reference only.

Breathing valves are usually installed at the top of storage tanks to solve the problem of positive or negative pressure gas entering and exiting the tank. After installing and using breathing valves in storage tanks, the liquid entering and leaving the tank will not be obstructed by the positive or negative pressure of the tank. When the liquid is injected into the tank, a large amount of gas is exhaled (called positive pressure). When the liquid inside the tank is exported, it must be sucked into the tank from the outside air (called negative pressure). If the breathing valve automatically closes when the work stops, it will not leak the liquid and gas inside the tank, which ensures the quality of the liquid inside the tank, especially volatile gases such as gasoline are not easily lost due to volatilization. Shanghai Meiyanyi Pump Valve has been a manufacturer of breathing valves for many years, with reliable quality. Users should pay attention to the safety of using the breathing valve and check whether the guide rod and valve disc of the breathing valve are flexible before use. And it is necessary to regularly (within 6 months) check whether the positive and negative breathing discs of the breathing valve are flexible, and whether the contact surface of the breathing valve disc is damaged. If there is any damage, it should be repaired immediately. After the maintenance is completed, the breathing valve can only be put back into use if everything is normal. Breathing valves are mainly divided into various models and specifications such as single breathing valves, single suction valves, all-weather breathing valves, fire-resistant breathing valves, explosion-proof breathing valves, etc. The following are also products and pictures of flame arresters, ventilation caps, etc. that are usually used together with breathing valves for your reference and selection.

control valve mainly include manual regulating valves, pneumatic regulating valves, electric regulating valves, temperature regulating valves, pressure regulating valves, as well as diaphragm type, self operated type, electronic type, single seat, double seat, sleeve type, etc. They are mainly used to control the fluid flow, pressure, temperature or liquid level of pipelines and equipment. Regulating valves have certain regulating performance, and the basic difference from block valves is that the valve disc of regulating valves is usually in a certain normally open state and continuously adjusts the required valve opening within a certain range of requirements, rather than being in a completely closed position. Its main function is to regulate the valve opening. The valve disc of the cut-off regulating valve is usually in a normally open or normally closed position, and its main function is to open and close, requiring good sealing performance. Pneumatic diaphragm regulating valves and electric regulating valves are used as executive components in industrial production process automatic control. They play a role in receiving and executing control instructions in automatic control systems. They receive command signals feedback from the system controller PLC and are driven by external power to cause displacement of the valve disc, change the size of the channel area, and automatically regulate the fluid flow rate. Through the change of flow rate, the fluid pressure, temperature, liquid level and other parameters of the controlled pipeline and equipment meet the control requirements. The common characteristics of the regulating valves produced by Shanghai Meiyan Yi Pump Valve are good regulating characteristics and good action accuracy. Various models and specifications are complete, and product pictures are for reference only.

Pressure reducing valves are mainly used in industrial pipeline systems such as water, oil, steam, hydrogen, oxygen, nitrogen, argon, etc. Their main function is to manually or automatically reduce pressure and maintain a certain set pressure value at the pipeline outlet. If the outlet pressure increases, due to the force below the small diaphragm (or diaphragm) being greater than the elastic force of the regulating spring, the small diaphragm (or diaphragm) moves upward, and the auxiliary valve disc moves in the closing direction, reducing the fluid entering below the large diaphragm (or above the piston) and decreasing the pressure. As a result, the opening of the main valve disc decreases, and the outlet pressure also decreases, reaching a new equilibrium. On the contrary, when the outlet pressure decreases, the opening of the main valve disc increases, and the outlet pressure rises again. It can stably ensure that the outlet pressure is automatically maintained within the specified range. The pressure reducing valves produced by Shanghai Meiyan Yi Pump Valve mainly include piston type, diaphragm type, self operated type, lever type, pilot type, proportional type, direct acting, and branch specific pressure reducing valves, which are suitable for pressure reduction and stabilization of various industrial pipelines. They also have the characteristics of low friction and high sensitivity. The following models, specifications, products, and pictures are provided for your reference and selection.

The types of low-temperature valves include low-temperature ball valves, low-temperature gate valves, low-temperature globe valves, low-temperature safety valves, low-temperature check valves, low-temperature regulating valves, etc. They are mainly suitable for pipeline transportation and storage equipment that require low-temperature liquids such as liquid oxygen, liquid nitrogen, liquid hydrogen, and liquefied natural gas to reach -196 degrees Celsius. Due to the fact that the output liquid low-temperature media such as ethylene, liquid oxygen, liquid hydrogen, liquefied natural gas, liquefied petroleum and other products are not only flammable and explosive, but also require gasification when heated, resulting in a volume expansion of hundreds of times during gasification. The material of low-temperature valves is very important. If the material is not qualified, it will cause external or internal leakage of the shell and sealing surface; The comprehensive mechanical properties, strength, and rigidity of the components cannot meet the requirements for use and may even fracture. Causing explosion due to leakage of liquefied natural gas medium. Therefore, in the process of developing, designing, and researching low-temperature valves, material low-temperature treatment is the primary and key issue. After years of research and development, Shanghai Meiyan Yipump Valve has accumulated rich experience in design, process, and manufacturing, and has developed a series of low-temperature valve products with complete models. The low-temperature valve products that leave the factory have undergone low-temperature treatment and strict testing. The following low-temperature product drawings are for selection reference only, and our company's drawings shall prevail.

Ceramic valves are one of the newly developed types of valves by Shanghai Meiyan Yi Pump Valve in recent years. Due to the active application of new ceramic materials in petroleum, chemical, mechanical and other fields, using the wear resistance and corrosion resistance of ceramics to produce wear-resistant and corrosion-resistant parts instead of metal materials has become an important development direction in the high-tech materials market in recent years. The ceramic valves produced by Shanghai Meiyanyi Pump Valve are mainly used in industries such as thermal power plants, steel, petroleum, chemical, and biotechnology. Suitable for conveying boiler steam, lime slurry, seawater containing particles, high hardness particles, corrosive media containing soft particles, powders, flue gas desulfurization, ash discharge, and slag discharge. Ceramic valves can be replaced with matching valve materials according to their intended use, and can be used in different temperatures and media. Especially in the face of harsh working conditions such as high wear, strong corrosion, high temperature, and high pressure, ceramic valves demonstrate their outstanding performance. Ceramic valves can meet high wear and strong corrosion environments, and their outstanding feature is their long service life. The performance price ratio of ceramic valves is much better than other similar metal valves. With the continuous development and progress of science and technology, ceramic materials have become more mature and complete in terms of formulation, molding, processing, and assembly processes. Ceramic valves mainly include ceramic butterfly valves, ceramic gate valves, ceramic ball valves, ceramic globe valves, ceramic diaphragm valves, and other specifications and models. Product pictures are for reference only, and dimensions are subject to our company's drawings.

Hydraulic control valve is a multi-purpose valve, with a wide range of valve functions depending on the role of different accessories. It is composed of a main valve and its external needle valve, pilot valve, solenoid valve, float valve, and pipeline combination. Hydraulic control valve is a general term for a series of multi-purpose control and safety valves. Mainly including: remote control float valve, pressure reducing valve, slow closing check valve, pressure relief valve, pressure holding valve, multifunctional water pump control valve, etc. The main characteristics of the hydraulic control valve produced by Shanghai Meiyan Yi Pump Valve are: it utilizes the pressure of the medium itself and the operation of the hydraulic system in its mode of action, and can be automatically controlled, with accurate action and reliable performance. It can be widely used in daily life, production, fire protection, water supply and drainage system pipelines for control and safety purposes. All models and specifications are complete, and the pictures are for reference only. Please refer to the drawings provided by our company.

Special valves refer to valves that are suitable for use in unconventional special environments and working conditions. The special valves produced by Shanghai Meiyanyi Pump Valve mainly include alloy valves, power station valves, sludge valves, exhaust valves, discharge valves, bellows valves, pipe clamp valves, blind plate valves, eyeglass valves, duckbill valves, and other types with excellent manufacturing processes. Shanghai Meiyan Yipump Valve can also develop and design various types and specifications of special valves according to user requirements! We strive to provide our customers with reliable, usable, and highest value products at minimal cost. The product images are for reference only, and the product is subject to our company's drawings.

The actuator, also known as the valve actuator, is mainly used for valve matching in Shanghai Meiyan Yi Pump Valve. It is also called a valve actuator and mainly includes electric valve actuators, pneumatic valve actuators, hydraulic valve actuators, pneumatic hydraulic actuators, etc. It is a device in automation technology tools that receives control information and applies control effects to controlled objects. The actuator is also an instrument that directly changes the manipulated variable in the forward path of the control system, consisting of an actuator and a regulating mechanism. The actuator adjusts the flow rate of the process medium to control the controlled data within the required range of the production process. In a process control system, the actuator consists of two parts: the executing mechanism and the regulating mechanism. The regulating mechanism directly changes the parameters of the production process through the execution of components, making the production process meet the predetermined requirements. The actuator receives control information from the controller and converts it into the output of the driving adjustment mechanism (such as angular displacement or linear displacement output). Valve actuators are connected to the valve body and installed directly on the production site, sometimes under harsh working conditions. Whether the actuator can maintain normal operation directly affects the safety and reliability of the automatic regulation system. The following provides various models, specifications, and pictures of valve actuators for reference only. The dimensions are subject to the drawings provided by our company.

Pipe fittings accessories are necessary for all applicable valve pipelines. In order to facilitate one-stop procurement for new and old users in engineering construction, Shanghai Meiyan Yi Pump Valve specially provides the following commonly used valve pipeline accessories and pipeline accessory products, mainly including filters, level gauges, sight glasses, flanges, pipe joints, transmitters and other specifications and models of pipeline accessory products. The pictures are for user reference only.