1. The pressure relief valve cannot be拧不进 into the angle valve.
(1) Cause of Occurrence
Pressure relief valve handwheel thread stripped; pressure relief valve inlet not properly aligned with angle valve connection; angle valve connection damaged.
(2) Method of Handling
To repair or replace the pressure-reducing valve handle, or to replace the entire pressure-reducing valve. When the angle valve connection is damaged, it is necessary to replace the angle valve or the entire LPG cylinder. However, users are not allowed to replace or repair it themselves; the cylinder (including the angle valve) should be sent to a professional repair department for handling. If the two interfaces are not aligned, simply realign the pressure-reducing valve inlet with the angle valve connection, and slowly rotate it to the left (counterclockwise) to tighten it properly.
2. Pressure relief valve gas leakage
(1) Cause of Occurrence
Valve body top and bottom cover screws were not tightened; the rubber diaphragm inside the valve body was damaged; the intake port seal ring was aged and damaged.
(2) Method of Handling
Tighten the upper and lower cover screws; replace the rubber film. The rubber sealing ring at the connection between the pressure-reducing valve and the steel cylinder plays a sealing role in supplying gas. Over time, it may wear, age, and even fall off by itself during cylinder replacement, causing a large amount of gas leakage and potentially serious accidents. Therefore, it is required that each time a steel cylinder is replaced and a pressure-reducing valve is installed, special attention should be given to checking whether the rubber sealing ring is intact and if there are signs of aging or wear, especially during installation, it is necessary to ensure that no sealing rings are missing. If the sealing ring is aged or worn, it should be replaced promptly, but it is absolutely not advisable to use a piece of tape cut to replace it; a proper sealing ring must be used. This article introduces the working principle, installation and maintenance, and fault analysis and handling of the gas pressure-reducing valve (hereinafter referred to as the pressure-reducing valve) to guide users in the correct use of the gas pressure-reducing valve, enhance safety awareness, and prevent the occurrence of gas accidents.
In recent years, gas leak accidents involving residential users have occurred frequently, posing a serious threat to people's lives and property safety. Besides the insufficient knowledge of gas appliances among users, an analysis of the truth behind these accidents reveals another critical factor: the improper use of pressure regulators has not been given enough attention. Statistics show that 80% of gas accidents are caused by the poor quality of pressure regulators and improper user operation. Through an introduction to the working principle, installation, maintenance, and troubleshooting of gas pressure regulators, the author guides users in the correct usage of these devices, enhances safety awareness, and helps prevent gas accidents.
