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Valve classification--- classified by connection method

(1) Threaded valves: The valve body has internal or external threads and is threadedly connected to the pipe.
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(2) Flange connection valve: The valve body has a flange and is connected with the pipe flange.

(3) Welding connection valve: The valve body has a welding groove and is welded to the pipe.

(4) Clamp connection valve: The valve body has a clamp and is connected to the pipe clamp.

(5) Sleeve connection valve: It is connected with the pipe sleeve.

(6) Coupling valve: The connection form that directly connects the valve and the two pipes together by bolts.

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