Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1994-11-22
1995-11-28
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
Direct response valves
137498, 137504, 137517, 137854, G05D 701
Patent
active
054698839
ABSTRACT:
A flow modulation device is provided for restricting fluid flow exhausted from a first, actuator-sided conduit toward a second, reservoir-sided conduit to an acceptable rate in the event of sudden pressure drop within the second conduit. The flow modulation device comprises a body including a first end wall and a first cylindrical side wall extending from the end wall toward the second conduit, the first end wall having an inlet port coupled to the first conduit; a socket fluid-tightly connected to the body to define a fluid chamber therebetween, the socket including a second end wall and a second cylindrical side wall extending from the second end wall into the first cylindrical side wall, the second side wall having at its distal end an abutment seat spaced apart from the first end wall, the second end wall having an axial aperture; a nipple sealingly fitted through the axial aperture of the socket to protrude into the fluid chamber, the nipple having an outlet port through which the fluid chamber is in communication with the second conduit; and an elastically deformable disk-like flap detachably mounted to an internal free end of the nipple, the disk-like flap having at least one orifice and a peripheral edge of generally circular shape, the peripheral edge lying adjacent to the abutment seat of the socket.
REFERENCES:
patent: 2777464 (1957-01-01), Mosely
patent: 2948296 (1960-08-01), Thorburn
patent: 3661175 (1972-05-01), Tillman
patent: 3886968 (1975-06-01), Murrell
patent: 4456029 (1984-06-01), McCrum
patent: 5072648 (1991-12-01), Krahn et al.
Daewoo Heavy Industries Ltd.
Nilson Robert G.
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