The action of the Check Valve is controlled by the valve back pressure. When the pressure sensor detects that the pressure of the Universal Valve increases, the opening of the Universal Valve of the Check Valve decreases. It is detected that the Check Valve pressure decreases and the Check Valve opening increases to meet the control requirements. This kind of Universal Valve is generally installed horizontally in the pipe. Suitable for water, steam and air medium pipelines.
The high-pressure chamber of the Check Valve is connected to the cylinder, and the low-pressure chamber is the gas outlet and is connected to the using 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 turn on the main switch of the cylinder, then rotate the low-pressure gauge pressure adjustment screw clockwise, and then compress the main spring to drive the diaphragm, spring gasket and ejector rod, and open the valve. In this way, the imported high-pressure gas enters the low-pressure chamber through throttling and decompression 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 throughput of high-pressure gas to achieve the necessary pressure value. A safety valve is installed on the Check Valve. It is a device to protect the safe use of the Check Valve and also a signaling device for Check Valve failure. Due to reasons such as roof damage or roof damage, the outlet pressure will automatically rise. When it exceeds a certain allowable value, the safety valve will automatically open for exhaust. 1. When using, first turn on the main switch of the cylinder, then rotate the low-pressure gauge pressure adjustment screw clockwise, compress the main spring to drive the film, spring gasket and top cover, and open the movable door. In this way, the imported high-pressure gas enters the low-pressure chamber through throttling and decompression from the high-pressure chamber, and passes through the operating system through the outlet.
2. Rotate the adjusting screw to change the height of the valve opening and adjust the high-pressure gas throughput to achieve the necessary pressure value.
3. A safety valve is installed on the Check Valve. It is a device to protect the safe use of the Check Valve and also a signaling device for Check Valve failure. Due to reasons such as roof damage or roof damage, the outlet pressure will automatically rise. When it exceeds a certain allowable value, the safety valve will automatically open for exhaust.
(1) According to different usage requirements, Check Valve have many specifications. The maximum inlet pressure is mostly , and the minimum inlet pressure is not less than 2.5 times the outlet pressure. There are many outlet pressure specifications, generally , and the maximum outlet pressure is .
(2) When installing the Check Valve, make sure that its connection specifications are consistent with the joints of the cylinder and the system being used. The Check Valve and the cylinder are connected by a hemispherical surface, and the nuts are tightened to make them fit perfectly. Therefore, the two hemispherical surfaces should be kept smooth during use to ensure a good air-tight effect. High-pressure gas can be used to blow away dust before installation. When necessary, materials such as polytetrafluoroethylene can also be used as gaskets.
(3) The Check Valve should be strictly prohibited from contacting grease to avoid fire accidents.
(4) When stopping work, the remaining air in the Check 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 Check Valve should avoid impact and vibration, and should not be in contact with corrosive substances.
