Performance advantage

Bellow is the key part of bellow sealed valves, which is welded to both the valve bonnet and valve stem, with automatic roll welding. The metal bellow can keep the stem part 100% no leakage. Double seal design (bellows+packing).

Bellow form a metal seal to prevent leakage, and packing can provide seal if the bellow failed. Overlay welded seat can keep reliable sealing under severe conditions. Ergonomic hand wheel. It provide longer service life and easier operation.

Technical specifications

Design standard: DIN EN 13709:2003

Face to face dimension: DIN EN558-1:1995

Flanged ends: DIN EN 1092-1:2002

Welded ends: DIN EN 12627

Test&inspection: DIN EN 12266:2003

Application

Thermal oil system, steam system, hot and cold water system, etc.