Rotary valve with line pressure connected actuator

作者: Billy R Bruton

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摘要: A rotary valve having a reciprocable, fluid-actuated operator which rotates the closure member to ''''fail'''' position by means of line pressure when there is failure power fluid normally used operate valve.

参考文章(5)
Charles O Pratt, Oil spray purge mechanism ,(1931)
Nelson Norman A, Tomlin Jerry B, Hydraulic valve operator having manual override mechanism ,(1969)
Christian F Rumold, Automatic two-fluid cut-off. ,(1911)
Edwin E Hedene, Fluid pressure operated valve ,(1942)