| 摘要 |
PURPOSE:To facilitate the connection of a pump to a flange by providing an engaging means for tacking to a pump casing, on a valve seat member which is interposed in between said pump casing and said flange and which has a hole. CONSTITUTION:The packing part 3c of a check valve member 3 is interposed in between a pump casing 2 and a valve seat member 4 and a projection 3d is inserted into a recessed part 4b. And, engaging claws 4a are engaged with projections 2a, to tack the valve seat member 4 to the pump casing 2. Then, a flange 1 is brought into contact with the valve seat member 4 so as to interpose the valve member 4 in between the pump casing 2 and the flange 1, and fastened and fixed with bolts 6, 7. Thereby, the connection of a pump to a flange can be easily carried out.
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