Fisher Controls International LLC

Jesse Creighton Doyle

Jonathan Wesley Richardson

Justin Paul Goodwin

Theodore Paul Geelhart

John Graham Brett

Valve trim apparatus having multiple fluid flow control members are disclosed herein. An example valve trim apparatus includes a primary valve seat and a first flow control member having a cavity and a first seating surface. The first flow control member is movable relative to the primary valve seat to control fluid flow between an inlet and an outlet of the fluid valve. A second flow control member is disposed within the cavity. The second flow control member is slidably coupled relative to the first flow control member. A secondary valve seat is coupled to the first flow control member. The second flow control member is to move relative to the secondary valve seat to throttle a fluid flow across the secondary valve seat.

Valve trim apparatus having multiple fluid flow control members

Valve trim apparatus having multiple fluid flow control members are disclosed herein. An example valve trim apparatus includes a primary valve seat and a first flow control member having a cavity and a first seating surface, where the first flow control member is movable relative to the primary valve seat. A second flow control member is disposed within the cavity and slidably coupled relative to the first flow control member. A secondary valve seat is coupled to the first flow control member and the second flow control member moves relative to the secondary valve seat to throttle a fluid flow across the secondary valve seat.

A steam assisted ring style desuperheater includes a ring body defining an axial flow path and one or more spray nozzles extending through a wall of the ring body. Each of the nozzles is connected to a separate cooling water manifold and atomizing steam manifold to conduct cooling water and atomizing steam separate from each other through the spray nozzle to an injection point. An atomizing head of each nozzle combines the cooling water and atomizing steam to form a spraywater cloud that is injected radially into the axial flow path. The spray nozzles include one or more flow passage inserts that define separate first and second fluid flow paths for conducting the cooling water and the atomizing steam separately through the spray nozzle.

Desuperheater and spray nozzles therefor

Thermally compensated valve trim apparatus are disclosed. An example valve trim apparatus includes a valve plug having a recess, an insert fixed in the recess and having an opening therein. The insert is made of a material having a greater strength than a second material of the valve plug. The example valve trim apparatus also includes a valve stem having a threaded end disposed in the opening of the insert to form a valve stem connection, and a spacer operatively coupled to the valve plug and vale stem to affect a load exerted on the valve stem connection in response to a change in temperature.

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Lincoln, NE, United States of America

Jesse Creighton Doyle