Valve operator,申请号US19750564024-传众专利搜索

Valve operator

申请公布号：US4054854(A)

申请号：US19750564024

申请日期：1975.04.01

申请公布日期：1977.10.18

申请人：

EXPERT INDUSTRIAL CONTROLS LTD.

发明人：MARSDEN, JOHN THOMAS

分类号：F16K31/06;F16K31/11;(IPC1-7):H01F3/10;H01F7/16

主分类号：F16K31/06

摘要：A valve operator comprises a pole piece formed from magnetizable material, a hollow intermediate member formed from non-magnetic material the intermediate member being secured to the pole piece in a fluid pressure proof manner and a further hollow member secured to the intermediate member again in a pressure proof manner. The hollow members contain an armature and the end of the further member is sealed to completely enclose the armature.