Basic knowledge of oxygen pressure reducing valve

Today, I will introduce some basic knowledge about oxygen pressure reducing valve, including its operation method and precautions. The action of the oxygen pressure reducing valve is controlled by the valve back pressure. When the pressure sensor detects that the valve pressure shows an increase, the valve opening of the pressure reducing valve decreases. It is detected that the pressure of the pressure reducing valve decreases, and the opening of the pressure reducing valve increases to meet the control requirements. This valve is generally installed horizontally in the pipe. Suitable for water, steam and air medium pipelines. Working principle: The high pressure chamber of the oxygen pressure reducing valve is connected to the cylinder, and the low pressure chamber is the gas outlet, which is connected to the use system. The displayed value of the high pressure gauge is the pressure of the gas stored in the cylinder. The outlet pressure of the low pressure gauge can be controlled by adjusting the screw. When in use, first open the main switch of the cylinder, then rotate the low pressure gauge pressure adjusting screw clockwise, and then compress the main spring, so that the membrane, spring washer and ejector rod are driven to open the valve. In this way, the imported high-pressure gas enters the low-pressure chamber after being throttled and decompressed from the high-pressure chamber, and passes through the operating system through the outlet. Turn the adjusting screw to change the opening height of the movable door, and adjust the high-pressure gas throughput to reach the necessary pressure value. A safety valve is installed on the pressure reducing valve. It is a device to protect the safe use of the pressure reducing valve and a signal device for the failure of the pressure reducing valve. Due to the roof, roof damage and other reasons, the outlet pressure automatically rises, and when it exceeds a certain allowable value, the safety valve will automatically open the exhaust. Operation and precautions: 1. When using, first turn on the main switch of the cylinder, then rotate the low pressure gauge pressure adjusting screw clockwise, compress the main spring to drive the film, spring washer and top cover, and open the movable door. In this way, the imported high-pressure gas enters the low-pressure chamber after being throttled and decompressed from the high-pressure chamber, and passes through the operating system through the outlet. 2. Rotate the adjusting screw to change the opening height of the valve, and adjust the high-pressure gas throughput to achieve the necessary pressure value. 3. A safety valve is installed on the pressure reducing valve. It is a device to protect the safe use of the pressure reducing valve and a signal device for the failure of the pressure reducing valve. Due to the roof, roof damage and other reasons, the outlet pressure automatically rises, and when it exceeds a certain allowable value, the safety valve will automatically open the exhaust. How to use the oxygen pressure reducing valve: (1) According to the different use requirements, the oxygen pressure reducing valve has many specifications. The maximum inlet pressure is mostly, and the minimum inlet pressure is not less than 2.5 times of the outlet pressure. There are many outlet pressure specifications, generally, the maximum outlet pressure is . (2) When installing the pressure reducing valve, it should be determined whether its connection specifications are consistent with the joints of the cylinder and the use system. The pressure reducing valve and the cylinder are connected by a hemispherical surface, and the two are completely matched by tightening the nut. Therefore, the two hemispheres should be kept clean during use to ensure a good airtight effect. High pressure gas can be used to blow off dust before installation. If necessary, PTFE and other materials can also be used as gaskets. (3) Oxygen pressure reducing valve should be strictly prohibited from contact with grease to avoid fire accident. (4) When the work is stopped, the residual air in the pressure reducing valve should be released, and then the adjusting screw should be loosened to prevent the elastic element from being deformed under pressure for a long time. (5) The pressure reducing valve should avoid impact and vibration, and should not be in contact with corrosive substances. A brief introduction to some basic knowledge about oxygen pressure reducing valve, if you have any understanding of it, if you have any questions, you can consult Lianke Valve Co.,Ltd. Contact: +86-577-8585 9626. .