Fluid handling – Line condition change responsive valves – Bi-directional flow valves
Patent
1975-12-10
1977-08-30
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
Bi-directional flow valves
1375133, F16K 1718
Patent
active
040447910
ABSTRACT:
A valve assembly comprising a body having a fluid passageway therethrough providing first and second ports, a floating valve seat and an engageable poppet disposed in the fluid passageway of the body between the ports thereof, means disposed on the body for yieldably biasing the valve seat into engagement with the poppet, means disposed on the body for yieldably biasing the poppet into engagement with the valve seat, abutment means disposed on the body engageable by the floating valve seat and poppet for restricting the movement of each of the floating valve seat and poppet toward the other thereof under the influence of the biasing means, the floating valve seat having a fluid passageway therethrough intercommunicating the first port and the poppet when the valve seat and poppet are disposed in engagement, the poppet having a primary fluid passageway therethrough intercommunicating the fluid passageway of the floating valve seat and the second port of the body when the valve seat and poppet are disposed in engagement, and the poppet having at least one secondary fluid passageway intercommunicating the floating valve seat and the second port of the body.
REFERENCES:
patent: 624624 (1899-05-01), Casey
patent: 1724881 (1929-08-01), Lund
patent: 2033839 (1936-03-01), Lawson
patent: 2633148 (1953-03-01), Kelly
patent: 2690762 (1954-10-01), Adams
patent: 3092137 (1963-06-01), Van Eldik Thieme et al.
City Tank Corporation
Nilson Robert G.
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