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.

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。

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Hardened seating surfaces - both disc and body seating surfaces are hard faced for maximum service life.

硬化的阀座表面—阀瓣和阀体地阀座表面都经过表面硬化，最大限度延长使用寿命。

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Double disc check valve consists of body, disc, valve rod and spring and other parts. The valve is designed with slim light weight.

双瓣止回阀主要由阀体、阀瓣、阀杆及弹簧等重要零件组成，并采用薄型轻巧设计。

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You're not really throwing as much as it's called a pull, because your body is pulling the disc through."

VOA: standard.2010.08.03

That suggests the interaction between the disc and the shepherd body is still going on.

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Every Aston-Martin body is sanded using hand-held orbital sanders with a 400-grade sanding disc, dampened with a fine mist of de-ionised water, and sanded again with 1000-grade discs.

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