| 摘要 |
A flow control valve (10) has a cylindrical housing (20) and a timing cup (3 0) slidably disposed within a central portion of the housing (20). The timing c up (30) has a wall (32). A piston rod (40) has a base (43) and a top (46), a filter (42) located within the rod, and a spring (70) surrounding the rod (4 0) for urging the rod (40) and cup (30) toward the inlet end. The rod (40) is able to pass through a flow regulator (80), which has a first portion (81) with one or more inlets ports (82) and a second portion (85) separated from the first portion (81) by an annular ridge (83).
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