Design and manufacture standard: Design and manufacture standard:
Design standard: GB/T 12241-2005, GB/T 12243-2005
Structure length: JB/T 2203
Inside nominal diameter: DN15-DN500
Pressure range: PN16-PN160
Key feature:
1. Compact structure, beautiful appearance, precision casting, and smooth surface.
2. The valve seat is separable to the valve body for easy maintenance.
3. The umbrella-type disc holder works with valve seat adjusting ring for adjustment, which can effectively increase the lift force, so that the valve can be fully opened rapidly at a low overpressure to discharge media;
4. The valve can rapidly reseat after overpressure relief to reach satisfactory blowdown.
5. When the medium pressure reaches more than 75% of opening pressure, it can be opened manually with wrench (in a safe manner).