FIELD: food-processing industry. SUBSTANCE: provided along entire length of valve active surface are wedge-shaped main grooves whose area of cross section increases along longitudinal axis from stem to end. Active part is made in form of cylinder with additional wedge-shaped grooves on part of its length; number of these grooves is equal to number of main grooves. EFFECT: enhanced reliability. 8 cl, 4 dwg
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Authors
Dates
1995-11-20—Published
1991-05-13—Filed