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帽螺纹 [mào luó wén]
cap thread
- 清洗：检查或更换磨损的阀瓣，断开控制管道的连接，采用钝工具和锤子敲击阀帽上的接片，然后旋松阀帽螺纹。
To Clean: Inspect or replace worn valve disc, disconnect control pipe and unscrew bonnet from valve body using blunt tool and hammer on bonnet lugs. - 构建如图2所示。 Use a section of 4" PVC waste pipe with a threaded screw-cap fitting on one end and a standard end-cap at the other.使用一节4 “ PVC的污水管与螺纹螺旋帽装修一结束就和一个标准的最终上限，在其他。
Construct as shown in Figure 2. - 阀门的类型应是4.2到4.4中所给出的类型，带有法兰/丝口/焊接或压缩端面，带有完整的或可更换的阀体，及螺纹式，联接式或拴结式阀帽或阀盖。
valves shall be one of the types specified in 4.2 to 4.4, having flanged, threaded, capillary or compression ends, integral or renewable body seats and screwed, union or bolted bonnets or covers.
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