Valves and valve actuation – With selective flow regulation – Rotary
Patent
1989-11-30
1990-08-07
Walton, George L.
Valves and valve actuation
With selective flow regulation
Rotary
13762531, 251314, F16K 508
Patent
active
049461346
ABSTRACT:
The object of the invention is a pair of superimposed ceramic disks (11,12) to open and close screw type valves, one of said disks (11) being fixed and the other one (12) being movable on the fixed disk, where each of said disks presents a slot or opening (15,16) composed by a segment portion (15',16') and by a tapered curved portion (15,",16") extending from one end of said segment portion, the slot or opening (15) of one disk (11) being turned in a direction which is opposite to the direction of slot (16) in the other disk (12), so that when opening the valve the tapered curved portions (15",16") are the first to superimpose to gradually increase the flow of the delivered liquid.
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Galatron S.r.l.
Walton George L.
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