Self-operated pressure regulating valve is widely used in industry. It is a kind of control device that can be automatically adjusted without external resources and only needs to be measured for the change of its own pressure, temperature or flow, and set a preset value. This is a kind of control device. Energy-saving instrument, with multi-functional instrument control system such as control execution. Its types can be divided into self-operated pressure (micro-pressure) control valves, self-operated (differential pressure) flow control valves, and self-operated temperature control valves. It is suitable for urban heating, heating and occasions where there is no power supply and gas supply and need to be controlled.

According to reports from Germany, urban heating and heating systems use this product, and the thermal efficiency is 30% to 40% higher than before. The energy saving effect is remarkable. Below I will briefly outline the principle of the self-operated pressure regulating valve. The working principle of the back pressure regulation of the self-operated valve: there are always two types of control behind the valve and before the valve. P2 enters the upper diaphragm chamber through the pipeline and acts on the top plate, and the generated force is balanced with the reaction force of the spring, which determines the relative position of the valve core and the valve seat, and controls the pressure behind the valve. When P2 increases, the force of P2 on the top plate also increases. At this time, the force on the top plate is greater than the reaction force of the spring, so that the valve core is closed to the valve seat position. At this time, the flow area between the valve core and the valve seat decreases, the flow resistance increases, and P2 decreases until the force on the top plate is balanced with the spring reaction force, so that P2 is reduced to the set value. Similarly, when P2 decreases. The direction of action is opposite to the above, which is the working principle of the pressure regulation after the valve. The application of self-operated pressure regulating valve is also very extensive, especially in the application of high viscosity medium.

According to reports from Germany, urban heating and heating systems use this product, and the thermal efficiency is 30% to 40% higher than before. The energy saving effect is remarkable. Below I will briefly outline the principle of the self-operated pressure regulating valve. The working principle of the back pressure regulation of the self-operated valve: there are always two types of control behind the valve and before the valve. P2 enters the upper diaphragm chamber through the pipeline and acts on the top plate, and the generated force is balanced with the reaction force of the spring, which determines the relative position of the valve core and the valve seat, and controls the pressure behind the valve. When P2 increases, the force of P2 on the top plate also increases. At this time, the force on the top plate is greater than the reaction force of the spring, so that the valve core is closed to the valve seat position. At this time, the flow area between the valve core and the valve seat decreases, the flow resistance increases, and P2 decreases until the force on the top plate is balanced with the spring reaction force, so that P2 is reduced to the set value. Similarly, when P2 decreases. The direction of action is opposite to the above, which is the working principle of the pressure regulation after the valve. The application of self-operated pressure regulating valve is also very extensive, especially in the application of high viscosity medium.