High pressure reciprocating pump
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United States of America Patent
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-
May 1, 1990
Grant Date -
N/A
app pub date -
Jun 21, 1988
filing date -
Jun 21, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improvement in high pressure reciprocating plunger pumps is disclosed which is characterized by a small residual volume and mechanical simplicity. The plunger is provided with a central bore which carries fluid to or from a valve located at the terminal end of the plunger. This valve may be either an intake or discharge valve. Another valve is provided with access to the pumping chamber. This second valve has a tapered exterior surface which is adapted to press-fitting and hydraulic removal. Both valve actuation movements are colinear with the direction of plunger travel.
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