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Pressure relief valve
Product classification of Meiyan One Pump Valve
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Pressure relief valve
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Diaphragm Pressure Reducing Valve
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Piston type pressure reducing valve
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Self operated pressure reducing valve
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Pilot operated pressure reducing valve
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Proportional Pressure Reducing Valve
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Branch pressure reducing valve
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Micro pressure reducing valve
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Special purpose pressure reducing valve
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More Valve>>
Contact us
- 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
Pressure relief valve
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.
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Diaphragm Pressure Reducing Valve
Diaphragm type pressure reducing valve refers to a pressure reducing valve whose front and rear flow channels are separated from the pressure sensing control chamber by a diaphragm. The diaphragm also transmits the pressure difference behind the valve and controls the opening and closing of the valve disc. The pressure difference between the front and rear of the valve is automatically adjusted according to the spring setting of the pressure reducing valve, controlling the stability of the pressure behind the valve. Diaphragm pressure reducing valve is a device used to regulate fluid pressure. By changing the flow rate and kinetic energy, the pressure loss is reduced to achieve the purpose of pressure reduction, and the outlet pressure is automatically stabilized by the energy of the medium itself. The diaphragm pressure reducing valve produced by Shanghai Meiyan Yi Pump Valve is widely used in various situations where fluid pressure control is required, such as high-rise buildings, urban water supply networks, etc. It has the functions of energy saving and improving system operating conditions.View details>>
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Piston type pressure reducing valve
A piston type pressure reducing valve refers to a pressure reducing valve whose inlet overcurrent valve chamber and outlet control valve chamber are separated from the spring control chamber by a piston. The pressure control valve chamber automatically adjusts the pressure setting value behind the control valve by sensing the changes in the spring setting value and the pressure behind the valve. The working principle of piston type pressure reducing valve is based on the principles of fluid mechanics. By changing the throttling area, the flow rate and kinetic energy of the fluid are altered, resulting in different pressure losses and achieving the purpose of pressure reduction. The piston type pressure reducing valve produced by Shanghai Meiyanyi Pump Valve relies on the adjustment of the control and regulation system to balance the fluctuation of the pressure behind the valve with the spring force, keeping the pressure behind the valve constant within a certain error range. Piston type pressure reducing valve is suitable for high-temperature and high-pressure pipeline equipment.View details>>
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Self operated pressure reducing valve
The working principle of a self operated pressure reducing valve is mainly to adjust the flow rate of the medium by controlling the opening and closing of the valve body, thereby reducing the pressure of the medium. With the help of the pressure behind the valve and the action of the spring, the opening of the valve disc of the pressure reducing valve is adjusted to maintain the pressure behind the valve within a certain range. Self operated pressure reducing valves come in both diaphragm and piston types, capable of regulating and stabilizing the flow and pressure stability of pipeline equipment behind the valve. The self operated pressure reducing valve produced by Shanghai Meiyanyi Pump Valve operates based on the principle of local resistance changes, balance adjustment using springs, and the energy of the medium itself. It is widely used in various pipeline equipment that requires stable pressure, especially steam pipelines, and has significant energy-saving effects.View details>>
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Pilot operated pressure reducing valve
Pilot operated pressure reducing valve refers to the use of pressure regulating gas or liquid through a conduit and a pilot valve to first send pressure to the spring control chamber to regulate the pressure before and after the valve. When the output pressure of the pressure reducing valve is high or the diameter is large, using a pressure regulating spring to directly regulate the pressure may cause excessive spring stiffness, resulting in large fluctuations in output pressure when the flow rate changes. To overcome these disadvantages, a pilot operated pressure reducing valve can be selected, which supplies pressure regulating gas through a small direct acting pressure reducing valve and uses pressure regulating gas instead of a pressure regulating spring to adjust the output pressure. The design of the pilot operated pressure reducing valve produced by Shanghai Meiyanyi Pump Valve makes it suitable for applications that require remote control or high pressure and large flow.View details>>
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Proportional Pressure Reducing Valve
Proportional pressure reducing valve refers to a pressure reducing valve that is designed proportionally to the flow resistance of the valve disc, fixing the ratio of the pressure before and after the valve. It is generally suitable for pipeline equipment with stable pressure before the valve and no significant fluctuations. Specifically, a proportional pressure reducing valve generates a pressure difference through the difference in cross-sectional area between the two ends of the piston, achieving pressure reduction. When the inlet pressure pushes the valve core to open, the medium flows through the inner hole of the valve core to the outlet. Due to the different end face areas of the piston on both sides of the inlet and outlet, with the inlet end having a smaller area and the outlet end having a larger area, the pressure on both sides of the valve core is different, resulting in the valve core maintaining a certain degree of opening. The proportional pressure reducing valve produced by Shanghai Meiyan Yi Pump Valve has both energy-saving and improved system operating conditions.View details>>
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Branch pressure reducing valve
Branch pressure reducing valves, as the name suggests, are mainly used on small diameter branch pipes or branch pipes of large diameter automatic valves, as pilot valves or control valves. The pressure of branch pressure reducing valves generally does not exceed PN25, and the diameter does not exceed DN100. The working principle of a branch pressure reducing valve is to adjust the inlet pressure to a desired outlet pressure, and rely on the energy of the medium itself and the spring to automatically maintain stable outlet pressure. The specific working principle of the branch pressure reducing valve produced by Shanghai Meiyanyi Pump Valve is to change the throttling area to alter the flow rate and fluid kinetic energy, thereby causing different pressure losses and achieving the purpose of pressure reduction. The pressure reducing quality of the product is stable, and the streamlined appearance is more exquisite.View details>>
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Micro pressure reducing valve
Micro pressure reducing valve refers to a pressure reducing valve with an outlet pressure adjustment range of 1.0-3.0kPa, but the pressure reduction range and adjustment accuracy of the micro pressure reducing valve may also vary depending on the model and brand. The micro pressure reducing valve produced by Shanghai Meiyanyi Pump Valve is widely used in applications that require precise pressure control, such as laboratories, industrial production, and scientific research fields. They usually have high precision and stable performance, which can meet the pressure requirements of various precision instruments. The working principle of micro pressure reducing valve is mainly based on pressure difference control and mechanical adjustment mechanism. When high-pressure gases or liquids enter the pressure regulator, they will act on sensitive components (such as membranes) inside the regulator. Sensitive components will generate corresponding displacement according to changes in input pressure, and then move the valve core or adjusting screw through mechanical connection to change the gap size between the valve seat and the valve body, thereby achieving the purpose of pressure reduction.View details>>
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Special purpose pressure reducing valve
Special purpose pressure reducing valves mainly refer to specialized pressure reducing valves for special media such as steam pressure reducing valves, oxygen pressure reducing valves, argon pressure reducing valves, nitrogen pressure reducing valves, as well as specialized pressure reducing valve products with special functions. The working principle design of special pressure reducing valves is also based on the principles of fluid mechanics. By changing the throttling area, the flow rate and kinetic energy of the fluid are altered, resulting in different pressure losses and achieving the purpose of pressure reduction. The special pressure reducing valve of Shanghai Meiyan Yi Pump Valve also relies on the adjustment of the control and regulation system to balance the fluctuation of the pressure behind the valve with the spring force, so that the pressure behind the valve can be kept constant within a certain error range, and the energy-saving effect can reach 30%. Welcome new and old users to contact us by email or phone to inquire about solutions for various special purpose pressure reducing valves.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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