FIELD: valving. SUBSTANCE: sealing unit has conical valving member and seat with a supporting surface, ring flexible member with the conical sealing surface, and flexible washer with the conical opening. The washer is mounted on the flexible member to permit deformation and to form the common sealing surface when it is in contact with the valving member. EFFECT: enhanced reliability. 2 dwg
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Authors
Dates
1996-06-27—Published
1994-05-10—Filed