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control valve
Product classification of Meiyan One Pump Valve
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- ShangHai Meiyan Yi Pump & Valve Co.,LTD.
- Sales hotline：
+86 21 5640 2009 - Pump customer service：
+86 138 1691 3072 - Valve customer service：
+86 1381 6913 072 - E-mail：
my1pv@1bengfa.com
control valve
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.
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Electric Control Valve
Electric control valves mainly consist of two parts: electric valve actuators and regulating valves. The types of electric valve actuators can be divided into angular stroke electric valve actuators, linear stroke electric valve actuators, etc., as well as switch type, regulating type, and intelligent type. Voltage 220V single-phase and 380V three-phase are optional. Electric control valves are important execution unit instruments in industrial automation process control. With the increasing degree of automation in the industrial field, the electric control valves produced by Shanghai Meiyanyi Pump Valve are widely used in various industrial production fields. Compared with pneumatic control valves, they have obvious advantages such as energy saving (only consuming electricity during operation), environmental protection (no carbon emissions), and quick and convenient installation and use (no need for complex pneumatic pipelines and pump workstations).View details>>
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Pneumatic Control Valve
Pneumatic control valves mainly consist of pneumatic actuators, pneumatic triplets, solenoid valves, limit switches, and control valves. Pneumatic valve actuators can be divided into single acting and double acting, as well as pneumatic diaphragm and piston types. Pneumatic control valve is an industrial process control instrument valve that uses compressed gas as a power source, a cylinder as the actuator of the valve, and adjusts the flow rate, pressure, temperature and other process parameters of the pipeline medium according to the current or voltage control signal of the industrial automation control system. The pneumatic control valves produced by Shanghai Meiyan Yi Pump Valve are widely used in various automation control pipelines of industrial enterprises such as petroleum, chemical, power, metallurgy, etc., and are one of the important equipment for achieving industrial automation control.View details>>
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Single seat regulating valve
Single seat regulating valve refers to the structural form between the valve body and the valve seat of the regulating valve, which forms the inlet and outlet seals of the valve with a valve core sealing surface and a valve seat sealing surface. Single seat regulating valves can be divided into electric, pneumatic, and hydraulic types, and flow characteristics can be divided into linear characteristics and equal percentage characteristics. A single seat regulating valve is an instrument valve device used for flow control. It has a large unbalanced force and allows for a smaller pressure difference than a double seat valve. When there is a high pressure difference and a large diameter, it is best to equip it with a valve positioner. The single seat regulating valve produced by Shanghai Meiyanyi Pump Valve has the characteristics of small volume, small leakage, flexible and reliable action. It consists of a pneumatic or electric valve actuator and a valve body. It uses compressed air or a motor as the driving force to receive pressure signals from the control system, and adjusts the flow rate of the medium in the pipeline according to the proportion of signal changes, realizing the automation process of production control.View details>>
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Dual Seat Regulating Valve
Double seat regulating valve refers to a regulating valve with two valve cores and two valve seats forming two valve seals between the inlet and outlet of the valve. It can be divided into electric control and pneumatic control, and can input control signals of DC4-20mA or DC1-5V for control. According to the signal of the regulating part, the opening of the valve is automatically controlled to achieve the regulation of medium flow rate, pressure, and liquid level. The double seat regulating valve produced by Shanghai Meiyan Yi Pump Valve is particularly suitable for situations with large pressure differences, allowable leaks, and media that are not very clean. The flow characteristics mainly include linear characteristics, equal percentage characteristics, and parabolic characteristics, which determine the control effect and accuracy of the regulating valve under different working conditions. Its product has a nominal pressure rating of DN25-400 and is suitable for a wide range of fluid temperatures, from -250 ℃ to+560 ℃.View details>>
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Sleeve Regulating Valve
Sleeve regulating valve refers to a dual valve core structure with a valve disc on the inside and a sleeve on the outside of the regulating valve. The working principle of sleeve regulating valve is based on its special valve core structure. The gap between the sleeve and the valve disc is matched, and there are multiple throttling windows on the sleeve. The shape and area of the windows determine the flow characteristics of the regulating valve. The valve seat adopts a self centering non threaded clamping structure, and the conical sealing surface on the valve seat cooperates with the conical sealing surface on the valve disc to form a cut-off sealing pair, ensuring the sealing performance of the valve when it is tightly closed. There are symmetrically distributed balance holes parallel to the axial direction on the valve disc, which connect the chambers on the upper and lower end faces of the valve disc. Most of them cancel out the force of the medium acting on the axial direction of the valve disc, thereby reducing the unbalanced force generated by the medium on the valve stem. The large guide surface of the valve core reduces the oscillation caused by eddy currents and impacts.View details>>
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Pressure Regulating Valve
Pressure regulating valve refers to a regulating valve specifically used to adjust the inlet and outlet pressure of pipeline equipment. It has different regulating forms such as electric, pneumatic, hydraulic, and self operated. The pressure regulating valve produced by Shanghai Meiyan Yi Pump Valve is widely used in various systems that require precise flow control, especially in water systems such as centralized heating (cooling), to distribute the flow of the pipeline network according to demand, eliminate hydraulic imbalance in the water system, and solve the problem of uneven heating and cooling. Its working principle is mainly to reduce pressure by passing high-pressure medium through a small hole into a relatively large chamber, achieving regulation and control of flow rate and pressure. The pressure regulating valve can be directly set according to the design, and the valve can automatically eliminate the residual pressure head and pressure fluctuations of the pipeline under the action of water, effectively solving the problem of pressure imbalance in the pipeline network.View details>>
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Flow Control Valve
A flow control valve refers to a valve specifically used in pipeline equipment to regulate the flow of liquids or gases during transportation. A flow control valve is an intuitive and simple flow control device suitable for liquid or gas pipeline systems that require flow control, especially for flow control of non corrosive liquid media such as heating and air conditioning. The flow control valve can directly set the flow rate according to the design. The valve can automatically eliminate the flow deviation caused by residual pressure head and pressure fluctuations in the pipeline under the action of water, and maintain the set flow rate unchanged no matter how the system pressure changes. The working principle of the flow regulating valve produced by Shanghai Meiyanyi Pump Valve is based on its design, which can automatically eliminate hydraulic imbalance caused by various factors in the water system and maintain the flow rate required by users.View details>>
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Self operated regulating valve
Self operated regulating valve is an automatic regulating valve that automatically adjusts the temperature, pressure, and flow rate of the pipeline inlet and outlet through pressure sensors or temperature sensors and springs. Its working principle relies on the pressure and temperature of the medium flowing through the valve as energy to drive the valve to work automatically, without the need for external power supply and secondary instruments, so it is also known as self operated control valve. The self operated regulating valves produced by Shanghai Meiyan Yi Pump Valve use feedback signals (pressure, pressure difference, temperature) from the valve output end to be transmitted through signal pipes to the actuator to drive the valve disc and change the valve opening, achieving the purpose of regulating pressure, flow rate, and temperature. Compared to manual regulating valves, its advantage is the ability to automatically adjust, while compared to electric regulating valves, its advantage is that it can easily achieve system flow distribution without the need for external power.View details>>
Contact us
- Sales hotline：
+86 21 5640 2009 - Pump customer service：
+86 138 1691 3072 - Valve customer service：
+86 1381 6913 072 - E-mail：
my1pv@1bengfa.com
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