性能优势Performance advangate

1. 波纹管是波纹管阀门的关键组件，采用自动滚焊，焊在阀瓣与阀杆上，确保阀杆部件100%零泄露。

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.

2. 双密封设计（波纹管+填料), 波纹管形成第一道,金属密封防止泄漏，如果波纹管失效，填料可以提供第二道密封。

Double seal design(bellows+packing). Bellow form a metal seal to prevent leakage, and packing can provide seal if the bellow failed.

结构特征Structure features:

螺栓阀盖Bolt bonnet(BB) ,

焊接阀盖Welded bonnet (WB)

明杆支架型Outside screw and yoke(OS&Y)

技术规范TECHNICAL SPECIFICATION

设计标准Design standard: API 602; MSS-SP-117

连接端Connection ends:

(1) 承插焊Socket welded end: ANSI B16.11

(2) 螺纹Screw end: ANSI B1.20.1

(3) 对焊 Butt-welded end: ANSI B16.25

(4) 法兰Flange end: ANSI B16.5, HG/T 20592

结构长度Face to face dimension: ASME B16.10

连接法兰Flanged ends: ASME B16.5

对焊连接Welded ends: ASME B16.25

试验与检验Test & inspection: GB/T13927 GB/T 9092 API 598

应用APPLICATION

热油系统、蒸汽系统、冷热水系统等等

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