| 技术范围 Technical specification 设计依据
Design reference | GB标准 | 设计标准
Design standrd | GB12238 | 结构长度
Face To face | 对夹连接
Wafer connecting | GB12221 | 对夹法兰尺寸
Wafer Flange Size | GB12221 | 试验和检验
Test＆inspection | JB/T9002 | 注：系列蝶阀结构长度及连接法兰尺寸可根据用户要求设计制造。
Note:The structural length and connecting flange size of butterfly valve
serles can be designed and manufactured as perusers'requirements. 
主要零件材质表 Form of Major Parts Materials 序号
NO | 零件名称
Accessory name | 材质
Material | | Z | C | P | | 1 | 阀座
Seat | 橡胶
Ruber | | 2 | 圆柱削
Straight Pin | 45钢
45 Steel | 不锈钢
Stainless Steel | | 3 | 蝶板
Butterfly Plate | 灰铸铁镀硬铬
Grey Cast-iron Hard Chrome Plating | 碳钢或不锈钢
Simple Steel or Stainless Steel | 不锈钢
Stainless Steel | | 4 | 阀体
Body | 灰铸铁
Grey Castlron | 碳钢
Simple Steel | 不锈钢
Stainless Steel | | 5 | 螺柱
Stud | 35钢
35 Steel | 碳钢
Simple Steel | 不锈钢
Stainless Steel | | 6 | 阀杆
Stem | 45钢
45 Steel | 不锈钢
Stainless Steel | | 7 | 键
Key | 45钢
45 Steel | 不锈钢
Stainless Steel | | 8 | 衬套
Bushing
| 铜基粉末冶金
Copper Base Powder Metallurgy | | 9 | O形圈
O Ring | 橡胶
Ruber | | 10 | 气动装置
Pneumatic Device | | | 11 | 位置指示器
Location lndicator | 塑料
Plactic | | 
