Druckminderer

Automatically reduce the pipeline pressure reducing valve is a special unit working pressure, valve before it can be reduced to pipe high pressure valve after the piping required level. ZYX74X valve is widely used in high-rise building, urban water supply high pressure areas, mines and other occasions to ensure the water supply system, water points, access to appropriate services, water pressure and flow. In view of leakage of water and waste water system is almost the same size is proportional to pressure, so reducing valve is to improve the system operating conditions and potential water-saving effect, according to statistics about 30% of its water-saving effect. Valve structure of many types are common in the past, films, etc. within the spring piston. Valve, the basic mechanism is to flow through the valve on the flow and reduce the pressure of local resistance, the range of water pressure drop from the connection valve piston valve on both sides of the film or automatically adjust the import and export of water pressure. Appeared in recent years, some new valve, proportional valve, such as fixed, will be more than decompression is the use of the floating piston in the hydraulic valve body than the control, import and export and import and export side than the end of decompression piston area ratio as inverse. Fixed percentage of the work of reducing valve copper smooth without vibration; valve body there is no spring, so no spring corrosion, metal fatigue failure of consideration; seal leakage performance is not good, so not only by the dynamic pressure (water flows) also reduced static pressure ( flow is 0); particularly in the decompression at the same time does not affect the water flow. Valve usually DN50 DN100 and other specifications, valve before and after the work of the pressure is <1MPa and 0.1 0.5MPa, Pressure Ranges error ± 5% 10%. Valve Work Experiments in physical chemistry is usually used oxygen, nitrogen, hydrogen, argon and other gases. These gases are generally stored in special high-pressure gas cylinders in the. Valve used by reduced gas pressure relief valve to test the required range, and then through the other control valve to fine-tune the gas input using the system. The most commonly used valve for the branch pressure reducing valve, referred to as oxygen table. 1. Branch pipe valve works Branch of the chamber and the cylinder valve connection, low pressure chamber for the gas exports, and access to use the system. High table showing the value stored in the gas cylinder pressure. Low pressure forms of export control by the adjusting screw. Cylinders used to open the main switch first, then turn it clockwise low pressure regulator screw table, to compress the main spring and transmission film, spring pads and mandrel open the trap door. This high-pressure gas imports from the hyperbaric chamber decompression by cutting into the low pressure chamber, and the exit leading to the working system. Turn adjustment screw to change the valve opening height, which regulate gas pressure to achieve the required throughput and the pressure value. Combined valve are equipped with safety valve. It is to protect the valve and make the safe use of the device, the signal is malfunctioning valve device. If, living mat, valve damage, or due to other reasons, leading to increased exports and more than a certain pressure on their own permission value, the safety valve will automatically open the exhaust. 2. Branch pipe valve to use (1) according to different application requirements, there are many specifications of the oxygen valve. The maximum inlet pressure in most cases, the minimum inlet pressure of not less than 2.5 times the outlet pressure. Outlet pressure specification more generally, the maximum outlet pressure. (2) The valve should be installed to determine whether the connection specification cylinders and the joint use of the system consistent. Valve and cylinder with hemispherical connection, by tightening the two nuts to fit together well. Valve, therefore, should be maintained in the two hemispheres using the smooth surface to ensure good sealing effect. Before installation can be high pressure gas blowing dust. When necessary, such materials can also be used to make Teflon gasket. (3) The oxygen regulator should be forbidden access to oil, to avoid fire accidents. (4) stop working when the valve should be placed in the air over the net, and then loosening the adjusting screw in order to avoid long-term compressive deformation of elastic components. (5) The valve should avoid impact vibration, not in contact with corrosive materials. 3. Other Gas Regulator Some gases, such as nitrogen, air, argon and other permanent gases, oxygen valve can be used. However, some gases, such as ammonia and other corrosive gases, you need special valve. Common market, there are nitrogen, air, hydrogen, ammonia, acetylene, propane, steam, and other special valve. The valve and precautions to use basically the same with the oxygen valve. However, it should be noted: special valve is generally not used for other gases. Valve to prevent misuse, and some special pressure reducing valve and the cylinder with a special connection between the mouth. Such as hydrogen and propane are used thread left, also known as reverse threads, special attention should be installed