Lift-type Safety Valve

The low-lift safety valve is an automatic valve designed to protect pressurized equipment. Its defining feature is the small opening height of the disc, typically ranging from 1/40 to 1/20 of the flow passage diameter. When the system pressure exceeds the preset safety value, the valve opens slightly, allowing a controlled release of medium through a limited opening area. Once the pressure returns to the normal operating range, the valve closes automatically. The low-lift safety valve has a relatively compact structure and mainly consists of components such as the valve body, disc, seat, and adjusting spring. The opening height is precisely controlled by internal mechanical structures (e.g., a reaction disk), and its operating characteristic is proportional action, meaning the opening height gradually increases with rising pressure. The low-lift safety valves produced by Kaiweixi Valve Group offer advantages such as lightweight design, excellent sealing, high sensitivity to pressure fluctuations, and prompt resetting. Due to their relatively small discharge capacity, they are particularly suitable for applications involving liquid media or where gas discharge requirements are limited. These valves serve as fundamental safety protection devices to prevent equipment damage or accidents caused by abnormal pressure increases.