公开(公告)号：US3820561A

公开(公告)日：1974-06-28

申请号：US36313573

申请日：1973-05-23

申请人： PAPST J ,  PAPST S ,  BROCKMULLER B

发明人： PAPST J ,  PAPST S ,  BROCKMULLER B

IPC分类号： F04B39/10 ,  F16K15/08 ,  F16K15/16

CPC分类号： F04B39/1073 ,  F16K15/08 ,  Y10T137/7841 ,  Y10T137/7879

摘要： A valve assembly particularly for use in piston compressors wherein a valve opening is covered by a pair of superposed platelike closure members. The closure member closer to the valve seat has an aperture and the closure members have stroke limiting stops at different distances from the valve seat so that when the member closer to the seat has reached its maximum opening, the other member can still open further to uncover said aperture.