Diaphragm pressure gauges are mainly used in industries such as petroleum, chemical, chemical fiber, printing and dyeing, pharmaceuticals, alkali production, and food. It can measure the pressure of corrosive, high viscosity, easy crystallization, easy solidification, high temperature, liquid, gas or granular solid media, because the stainless steel shell is more corrosion-resistant and wear-resistant. Using a glass mask is aesthetically pleasing and practical, with direct on-site readings that are fast and accurate. However, in order to achieve accurate measurement data, it is still necessary to avoid direct entry of the measuring medium into the pressure gauge, prevent the accumulation of sediment, make it difficult to maintain and clean, and in severe cases, may cause overall damage to the pressure gauge. There are flange connection, threaded connection, and clamp connection methods. Choosing the appropriate connection method according to the requirements of the measurement environm…