Fluid handling – Line condition change responsive valves – Bi-directional flow valves
Patent
1983-01-27
1984-01-31
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
Bi-directional flow valves
137493, 1375133, 137515, F16K 1718
Patent
active
044283962
ABSTRACT:
A valve assembly has an elongated tubular body having a fluid passageway axially therethrough providing first and second end ports with a floating valve seat and an engageable poppet disposed in the fluid passageway of the body between the ports thereof and spring means disposed on the body for yieldably biasing the valve seat into engagement with the poppet and other spring means disposed in the body for yieldably biasing the poppet into engagement with the valve seat; a central abutment is disposed in the body between and 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 both spring means. The floating valve seat has a fluid passageway therethrough intercommunicating the first port and the poppet when the valve seat and poppet are disposed in engagement with 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. Manually adjustable threaded tubular coupling members are mounted for axial adjustment in the ports to vary the force exerted by the springs to effect desired valve operation at desired pressure and operating conditions.
REFERENCES:
patent: 1322638 (1919-11-01), Smolensky
patent: 2645242 (1953-07-01), Monnich
patent: 3437065 (1969-04-01), Robbins
patent: 4044791 (1977-08-01), McKenzie
City Tank Corporation
Nilson Robert G.
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