How to distinguish between full-lift safety valves and low-lift safety valves?

Date: 2025-12-31Views: 581

Fully open safety valve：

A safety valve is classified as a full-lift type if its disc opening height is equal to or greater than one-quarter of the seat throat diameter.

Micro-opening safety valve：

Safety valves with a valve disc opening height of 1/40 to 1/20 of the seat throat diameter are classified as lift-type safety valves.