Recently, I saw such a news that Xu, a staff member engaged in canned liquefied petroleum gas transmission, changed his motorcycle to a garbage truck in order to prevent the traffic police from checking it. He personally purchased a set of environmentally-friendly clothes used by the cleaners. Wearing such clothes, he walked the streets to send liquefied gas to everyone. This news may sound really fresh, but such a wonderful transformation still did not escape the arrest of the traffic police. A few days later, the local police seized Xu and the tricycle was as follows. On the morning of the same day, when a three-wheeled motorcycle cleared garbage trucks along Yanjiang Avenue, it was noticed by the traffic police. Xu, the driver, wearing orange cleaning work clothes, is very bright. It seems that everything is logical, what causes the attention of the traffic police? The original traffic police because this car has no garbage truck should have "temperament" clean to not like a garbage truck, in addition, the front did not hang on the license plate. In this way, the traffic police stopped the three-wheeled motorcycle at an intersection. In the face of the police's inspections, we were very impatient with Xu and claimed to have forgotten my driver's license and driving permit. According to Xu himself, this car was bought last year and sent liquefied gas to urban residents. However, because the three-wheeled motorcycle cannot enter the city, he also often finds that the traffic police is not a bad garbage truck. So Lingon moved and thought of the idea of ​​turning his tricycle into a garbage truck . Now think of it, really lost his wife and folded soldiers ah. However, regret is totally useless. Waiting for the three-wheel garbage truck and truck driver is a legal punishment. The moral condemnation is not enough, but suddenly the news comes. I believe Xu is in the same heart as most people. It's very sad. The transformation of the tricycle and its inevitable consequences have also played a vigilant role for us. No matter what the car is, Xiao Bian hopes that everyone can comply with the country’s traffic rules and not violate the traffic rules. Illegality will inevitably receive due punishment. I believe no one likes Xu and his car to appear in public. Globe valve, also known as cut-off valve, is a mandatory sealing valve, so when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. When the medium enters the valve from under the valve disc, the resistance that the operating force needs to overcome is the friction force between the valve stem and the packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the valve stem The diameter of the valve should be large, otherwise the failure of the top of the valve stem will occur. According to the connection method, it is divided into three types: flange connection, thread connection and welding connection. After the appearance of the self-sealing valve, the medium flow direction of the globe valve is changed from the top of the valve disc into the valve cavity. At this time, under the action of the medium pressure, the force to close the valve is small, but the force to open the valve is large, and the diameter of the valve stem can be adjusted accordingly. decrease. At the same time, under the action of the medium, this form of valve is also tighter. my country's valve "Three Chemicals" once stipulated that the flow direction of the globe valve should be from top to bottom. When the globe valve is opened, the opening height of the valve disc is 25% to 30% of the nominal diameter. The flow rate has reached the maximum, indicating that the valve has reached the fully open position. Therefore, the fully open position of the globe valve should be determined by the stroke of the valve disc. Shut-Off Valve,Shutoff Valve,Automatic Shut Off Valve,Auto Shut Off Valve Jiangsu Qiantu Trading Co., Ltd. , https://www.qiantupump.com