| 摘要 |
A check valve for an ink pump for an ink jet printer. The check valve is exposed to a pressure, P1, on one side and a pressure, P2, on the other side. The check valve opens when P1 is greater than P2. The check valve shuts when P1 is less than P2. The check valve has a circular valve seat; a resiliently deformable, circular valve disk; and a centrally disposed cylindrical pin. The pin axially symmetrically locates the valve disk with respect to valve seat. The pin also has an annular seat disposed so that a fluid tight longitudinal seal is formed between the valve disk and the annular seat. The annular seat also supports the valve disk against the pressure, P2.
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