Oxygen pneumatic valve introduction 2)

the physical and chemical experiments of oxygen pneumatic valve, often use of oxygen, nitrogen, hydrogen and argon gas, etc. These gases are usually stored in a dedicated high-pressure gas cylinders. When through the use of pneumatic valves, gas pressure drop to experiment the required range, repass fine-tune other pneumatic control valve, gas into the system. For oxygen pneumatic valve, pneumatic valve is the most commonly used oxygen or oxygen table.
first of all, the working principle of pneumatic valve hyperbaric oxygen connected with the cylinder, gas exports, and to use low pressure chamber system. The table shows the high pressure gas cylinder pressure stored value. The low pressure table of outlet pressure can be controlled by the adjusting screw. When you first open the master switch, and then clockwise rotating low pressure gauge pressure adjustment screw, make its compress the main spring and transmission film, spring block and ejector and open the valve. This high-pressure gas imports from the hyperbaric oxygen chamber pressure relief cut into the low pressure chamber, and the export system to work. Turn the adjusting screw, change the height of the valve opening, adjusting the e. the number of high pressure gas by pressure. Oxygen pressure pneumatic valve pneumatic valve is equipped with safety. It is to protect the safe use of pneumatic valve and relief devices, signal malfunction pneumatic valve equipment. If the valve gasket, valve damage or for other reasons, led to export increase, more than their own privileges certain pressure value, pneumatic valve will automatically open the exhaust.
second, use the oxygen pneumatic valve ( ) According to different application requirements, oxygen pressure pneumatic valve has many specifications. Most of the biggest import pressure, no more than. Times the minimum imports to reduce the pressure of the outlet pressure. Outlet pressure and specifications, normally, the highest outlet pressure. （ ） Pneumatic valve connection should be installed, and to determine whether is consistent with the cylinder and the system of the connector. Pneumatic valve and cylinder connected by hemispherical surface, turn the nut by make suitable for both. Therefore, the use of the two hemispheres of the surface should be clean, in order to ensure good sealing effect. Before the installation can use high pressure gas blowing dust. And also can be used when necessary, such as ptfe sealing materials. （ ） Oxygen pressure pneumatic valve should be forbidden contact grease, in order to avoid fire accidents. （ ） Stop working, pneumatic valve should be in a network of air, then loosen the adjustment screw, to avoid long-term elastic element compression deformation. ( ） Oxygen pressure pneumatic valve should avoid contact with corrosive substances impact vibration. Three, other oxygen pneumatic valve, pneumatic valve pneumatic valves and gas prevention measures, using the basic same with oxygen pneumatic valve. However, it should be pointed out: special vacuum pneumatic valve is generally not used in other gases. In order to prevent misuse, and some special vacuum pneumatic valve and the cylinder with special connector. Adopt left thread, for example, hydrogen and propane is also called reverse thread as is known to all, pay special attention during installation.