| 摘要 |
A method for protecting pump components by coating moving components with an amorphous carbon material. Components that preferably receive such coating include the plunger, barrel, traveling valve ball and seat, and standing valve ball and seat. Other components may also be coated. The coating thickness is preferably in the range of between about 0.0002'' and 0.030''. In one embodiment, at least two coating layers are applied, with the coating layers having different colored appearances so as to facilitate inspection for wearing away of the coating material.
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