| 摘要 |
A method of manufacturing a diaphragm valve, comprising the steps of providing a diaphragm (18) of flexible material, said diaphragm having an upper surface (22) and a lower surface (23), providing a valve body (10) having a through conduit (12), extending between an inlet (14) and an outlet (16), experimentally determining the shape of the lower surface (23) of the diaphgram when in its fully lowered "valve closed" position and forming a seat portion (15), said seat portion (15) having a shape accurately to match said determined shape of the lower surface (23) of the diaphgram in its fully lowered "valve closed" position. |
