1. The Check Valve is an important safety accessory for pressure-bearing special equipment. The Check Valve is an automatic valve that uses the force of the medium itself to discharge a rated amount of fluid without resorting to any external force to prevent the pressure from exceeding the rated value. When the pressure returns to normal, the valve will close again and prevent the medium from continuing to flow out. Check Valve is an important safety accessory for special pressure-bearing equipment such as boilers, pressure vessels and pressure pipelines. It is a safety device installed to prevent the equipment from exploding due to excessive pressure under abnormal circumstances. It has a great impact on the safety and economy of the equipment. plays an important role in all aspects.
2. Always keep the Check Valve clean to prevent the valve body spring from being filled or corroded by grease and dirt, and prevent the Check Valve discharge pipe from being blocked by oil or other foreign matter; always check whether the lead seal is intact and prevent the lever check from being blocked. The valve's weight is loose or moved to prevent the spring Check Valve's adjusting screw from being twisted at will.
3. When signs of leakage are found in the Check Valve, it should be updated or repaired in time. It is prohibited to increase the load to eliminate leakage. In order to prevent the valve disc and valve seat from being stuck by dirt such as oil and dirt in the gas, causing the Check Valve to fail to open normally, it is suitable for air, steam or other gases that contain sticky dirt but will not cause harm when discharged. Check Valve should be regularly tested for portable discharge.
4. In order to keep the Check Valve sensitive and reliable, perform regular calibration at least once a year. The contents of regular verification generally include dynamic inspection and disassembly inspection. The main content of the dynamic inspection is to check the opening pressure, backseat pressure, sealing degree and opening height under the rated discharge pressure of the Check Valve. The requirements are the same as those during Check Valve debugging. If the dynamic inspection fails, or there is abnormality such as collapse and leakage during operation, the requirements are the same as those for Check Valve debugging. If the dynamic inspection fails, or if leakage or other abnormal conditions are found during operation, disassembly inspection should be carried out. After disassembly, carefully check all parts of the Check Valve for cracks, scars, wear, corrosion, deformation, etc., repair or replace them according to the size of the defects and degree of damage, and finally assemble them for dynamic inspection.
