| 摘要 |
FIELD: machine building.SUBSTANCE: invention relates to machine building industry, and namely to valve construction, and can be used as shutoff valve in various industry branches, such as oil-gas, oil-refining and other branches. The assigned task is solved by the fact that in the housing bore there is an annular groove with a blind hole, at the bottom of bore of which the following components are placed: sectoral spacer bar is installed in the groove, and boss of spacer bar is installed in the blind hole. Sectoral spacer bar is made from elastomeric material, for example polyurethane with sector angle equal to 55°±5°. Blind hole in the groove is made at intersection point of vertical planes drawn through horizontal and vertical axes of the housing.EFFECT: creation of shutoff gate valve having higher repairability degree.3 cl, 2 dwg |
