Self-reliance type pressure regulator because they do not need other foreign energy as power supply, gas source, only rely on media's own energy to drive, both energy saving and environmental protection, easy to use, after the installation is set pressure value can be put into automatic operation, so the control accuracy is not high, lacks the power and gas source, has been more and more widely used, but in the use process, must pay attention to the particularity of selection, otherwise easy to cause accident, in use process, must pay attention to the use of selection and installation environment, therefore, detailed understanding on the working principle and structure of the pressure regulating valve are very important,



1, the purpose and scope of the

Self-reliance type pressure regulator (hereinafter referred to as the pressure valve) is a kind of without external energy relying only on the pressure change of medium itself to automatically adjust the pressure of the energy-saving products, measurement, execution, control the comprehensive functions, widely used in petroleum, chemical industry, metallurgy, light industry and other industrial sectors and urban heating, for eh system, this product can be used for non corrosive liquid, the highest temperature (350 degrees c) medium such as gas and steam pressure control device,



2, the structure and working principle of

Technology medium valve pressure Pl before through the valve core, the seat of the throttle, a valve after pressure P2. P2 input actuators through the control line in particular of the membrane chamber under function of the reaction and the reaction force of spring balance, decided the valve core, the relative position of the seat, after the control valve pressure, when the valve after pressure P2 increases, the P2 in particular of the action of forces also will increase, at this point, in particular the reaction force is greater than the spring, the valve core is close to the location of the seat, until a particular reaction force and the spring balance, at this time, the circulation between valve core and valve seat area decreases, flow resistance, so that the P2 to set data, by the same token, when the valve after pressure P2 falls, direction, contrary to the above, this is the working principle of pressure regulating valve later, when the need to change the set point of the valve after pressure P2,



3, the technical features

Self-reliance type pressure regulator is does not require any additional energy, USES the energy of modulated medium to achieve automatic adjustment of the actuator product, the product characteristic, can with no electricity, no gas place to work, at the same time, save energy, pressure setting can be adjusted freely in the running, the quick opening traffic characteristics, action quick, sealed performance is good, so it is widely used in petroleum, chemical industry, electric power, metallurgy, food, textile, machinery manufacturing and resident building blocks such as all kinds of industrial equipment of all kinds of gas, liquid and steam medium pressure, voltage regulator (for valve after adjustment), or pressure, holding pressure (used in valve regulating) automatic control, attached condenser can be used in the temperature of 350 degrees or less,