Due to the high pressure in the gas cylinder, the pressure required for gas welding and gas cutting and the point of use is relatively small, so it is necessary to use a gas pressure regulator to reduce the higher pressure gas stored in the gas cylinder to a low pressure gas, and it should be ensured that The required working pressure remains constant throughout.
According to different working principles, the Ningdian® gas pressure regulators made in China can be divided into two types: positive-action type and reverse-action type. Common domestic gas pressure regulators are mainly of two types: single-stage reaction type and two-stage hybrid type (the first stage is a positive-action type, and the second stage is a reverse-action type).