Low torque control valve,申请号US19770851500-传众专利搜索

Low torque control valve

申请公布号：US4193578(A)

申请号：US19770851500

申请日期：1977.11.14

申请公布日期：1980.03.18

申请人：

CASHCO INC

发明人：BRUMM, RICHARD S

分类号：F16K3/22;F16K5/00;F16K5/06;(IPC1-7):F16K1/18

主分类号：F16K3/22

摘要：A rotary valve comprising a spherical segment supported on arms extending radially from aligned stub shafts. Carried by the arms is a vane which is circular in outline and of maximum thickness along the diameter parallel to the axis of the shaft, tapering to lesser thicknesses in both directions transverse of that diameter. In addition, the vane is tilted about the maximum thickness diameter in the rotary direction opposite to valve opening movement, so that it remains exposed to the flow stream through full movement of the plug. The flow stream acting against the vane biases the plug toward closed position, cancelling the effects of the flow stream acting against the plug itself.