Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1976-11-29
1979-02-27
Cline, William R.
Fluid handling
Line condition change responsive valves
Direct response valves
137521, F16K 1503
Patent
active
041413806
ABSTRACT:
A flow-limiting device for a pipe carrying a fluid or gaseous medium, comprising a flap, means mounting the flap in the pipe for pivotal movement in a manner to vary the cross-sectional area of flow through the pipe, and spring means urging the flap in a direction to increase the cross-sectional area of flow and against the direction of flow through the pipe, so that the flap varies the cross-sectional area of flow through the pipe in dependence on the kinetic energy differential of the medium upstream and downstream of the flap. The spring means comprise a leaf spring one end of which is mounted in an upper part of a housing for insertion in the pipe and the other end of which carries the flap. There is a clearance beneath the lower edge of the flap to permit the passage of deposits in the medium past the flap in all positions thereof.
REFERENCES:
patent: 1105280 (1914-07-01), Kurtz
patent: 2217380 (1940-10-01), Pedder et al.
patent: 2864394 (1958-12-01), Hempel
patent: 3128785 (1964-04-01), Krummel
patent: 3374804 (1968-03-01), Stegerud
patent: 3380474 (1968-04-01), Mills
patent: 3421545 (1969-01-01), De Marco
Cline William R.
Steag Aktiengesellschaft
VanOphem Remy J.
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