设计特点Design features
1、阀杆部位垫片+0形圈+填料多重密封
Stem area gasket +0-ring + packing multiple seal.
2、防吹出阀杆设计Blow-out proof stem
3、防火、静电结构Fire-proof and Anti-static structure.
4、阀座弹性密封设计Seat resilient seal design.
标准规范Standard specification
设计标准Design:GB/T 12237
面间距离Face to Face:GB/T 12221
法兰标准Flange:HG/T 20592
试验标准Inspection:GB/T 26480
