Fluid handling – Line condition change responsive valves – Pop valves
Patent
1975-07-30
1978-10-24
Rosenthal, Arnold
Fluid handling
Line condition change responsive valves
Pop valves
137493, 137509, 13751625, 137528, F16K 1500, F16K 1726
Patent
active
041216199
ABSTRACT:
A series of valves with tapered-conical seats including valves such as safety relief or self-regulating in-line check valves which operate without springs but by the use of self-holding tapers which firmly stay in place when seated, the angle of the taper varying between 0.5.degree. to 45.degree., depending on the kind of material chosen and the valve type, TEFLON requiring a smaller angle for the same pressure holding capacity as conventional materials or other plastics, offering also valve design variations which include novel relief valves with springs and with self-relieving tapers, as well as shutoff valves with self-holding and self-relieving tapers operated by solenoids directly, and piloted valves, the valve series with conical seats, and improved sealing characteristics reduces dribble range while reference load is self-holding taper or a spring, and allows for reusable valves to replace safety rapture discs in some applications.
REFERENCES:
patent: 2358228 (1944-09-01), Hoof
patent: 2755816 (1956-07-01), Collins
patent: 2949929 (1960-08-01), Moore, Jr. et al.
patent: 3386470 (1968-06-01), Goda et al.
patent: 3540472 (1970-11-01), Brady et al.
patent: 3677286 (1972-07-01), Wolfson
patent: 3797522 (1974-03-01), Carleton
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