Title: Regulating flow

Abstract: A valve comprising a body having a straight-through flow passage, a valve head moveable at an acute angle with the downstream end of the passage into and out of the passage, and a valve seat extending about the passage for cooperation with the valve head to adjust the valve over a range from the wide-open to the closed condition, the valve seat approaching the axis of the passage no more closely than does the wall of the narrowest portion of the passage upstream or downstream of the seat, whereby in the wide-open condition, the valve head is removed from the passage, the axis of the passage remains a straight line, and the cross-sectional area of the passage at the position of the seat is no less than it is at the narrowest portion of the passage upstream or downstream of the seat.

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Inventors: Davlin, Irwin H. (Opelousas, LA, US)

Application Number: 712185
Filing Date: 1976-08-06
Publication_date: 1978-05-09
Assignee:
Primary Class(es): 29/890.128 29/DIG26
Other Classes:
US Patent Ref:

2710121	Jun, 1955	Rees	251/366.
2903564	Sep, 1959	Carr	29/157.
3418708	Dec, 1968	Siver	29/157.
3979105	Sep, 1976	Pool et al.	251/366.

Other Refs: 598350465785715505663422720691186875685051021048

Sep, 1925	FR
Jul, 1936	FR
Mar, 1933	DD
Dec, 1932	DD
Feb, 1930	IT
Apr, 1947	SW
Apr, 1973	CH
Feb, 1966	UK

Primary Examiner: Larson, Lowell A.
Assistant Examiner: Crane, Daniel C.
Attorney: