Main Types and Structures

(1) Classification by Sealing Method

Self-sealing type: Relies on medium pressure to compress the gate plate (e.g., low-pressure valves below DN50).

Forced-sealing type: Requires external air source pressure for forced compression (e.g., high-pressure or corrosive medium applications).

(2) Classification by Gate Design

Rigid Gate: Monolithic structure, suitable for clean media.

Elastic Gate: Capable of slight deformation to compensate for manufacturing tolerances and enhance sealing performance.

Tianjin Yibiao Valves Main Products: