2楼
Wet system alarm valves
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3楼
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4楼
1 Body, Metric Flanged
2 Cover
3 Seat
4 Clapper & Bushing Assembly
5 Clapper Rubber Facing
6 Clamping Ring
7 Clamping Ring Screws or Nut
8 Hinge Pin 1
9 Seat "O" Ring
10 Seat "O" Ring
11 Cover Gasket
12 Cover Bolts
13 Clapper Spring
14 Shaft Pipe Plug
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5楼
非常感谢！
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6楼
2楼的图片很好啊，哪里找的？是否有书啊？（英文的）
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7楼
湿式报警阀 damp-mode annunciator valve 或 humidity-mode annunciator
valve
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