1.流线型，明杆带支架 1.Streamline outside screw and yoke

2.中法兰螺栓连接 2.Bolted bonnet

3.活套连接阀瓣 3.Loose disc

4.升降阀杆与手轮 4.Rising stem and hand wheel

5.支架与阀盖一体式 5.Yoke integral with bonnet

6.伞齿轮操作选配 6.Avail able with gear operator

7.标准法兰连接 7.Flanged ends