Self-operated pressure regulating valve is widely used in industry. It is a kind of control device which can automatically adjust by setting the pre-value without any need of external resources and only needs to measure the change of pressure, temperature or flow by itself. Energy-saving meters, with control and implementation of multi-function instrumentation control system. Its types can be divided into self-pressure (micro) pressure regulating valve, self-operated (pressure difference) flow control valve, self-operated temperature control valve. Suitable for urban heating, heating and no power supply, gas needs to control the occasion. According to German reports, the city heating, heating system uses the product, thermal efficiency than the previous increase of 30% to 40%. Energy-saving effect is remarkable. Below I will self-style pressure regulating valve for a brief overview of the principle. Self-acting valve pressure regulating the working principle: There are always valves, the valve before the control of two, before the valve pressure P1 through the spool, valve throttling, into a valve pressure P2. P2 through the pipeline input on the role of membrane on the top plate chamber, the resulting force and the spring reaction force balance, determines the spool, the relative position of the valve seat, the control valve pressure. As P2 increases, the action of P2 on the top plate also increases. At this moment, the force on the top plate is greater than the reaction force of the spring, so that the valve core is closed to the position of the valve seat. At this time, the flow area between the valve plug and the seat decreases, the flow resistance becomes larger, and P2 decreases until the force on the top plate is balanced with the spring reaction force, thereby lowering P2 to the set value. Similarly, when P2 decreases. The role of the opposite direction and above, this is the working principle of the valve pressure regulator. The application of self-operated pressure regulating valve is also very extensive, highlighting the application in the medium of higher viscosity. According to German reports, the city heating, heating system uses the product, thermal efficiency than the previous increase of 30% to 40%. Energy-saving effect is remarkable. Below I will self-style pressure regulating valve for a brief overview of the principle. Self-acting valve pressure regulating the working principle: There are always valves, the valve before the control of two, before the valve pressure P1 through the spool, valve throttling, into a valve pressure P2. P2 through the pipeline input on the role of membrane on the top plate chamber, the resulting force and the spring reaction force balance, determines the spool, the relative position of the valve seat, the control valve pressure. As P2 increases, the action of P2 on the top plate also increases. At this moment, the force on the top plate is greater than the reaction force of the spring, so that the valve core is closed to the position of the valve seat. At this time, the flow area between the valve plug and the seat decreases, the flow resistance becomes larger, and P2 decreases until the force on the top plate is balanced with the spring reaction force, thereby lowering P2 to the set value. Similarly, when P2 decreases. The role of the opposite direction and above, this is the working principle of the valve pressure regulator. The application of self-operated pressure regulating valve is also very extensive, highlighting the application in the medium of higher viscosity.
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