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US4463291A
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Automatic control system and valve actuator
|
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US3595270A
|
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Plug valve construction and operating mechanism
|
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US3605187A
|
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Extruder structures
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US3537559A
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Spring for use in limiting torque in valve operators
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US3492716A
|
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Production of extruder heads
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US3466945A
|
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Valve operating equipment particularly for automatically modulated valves
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US3394735A
|
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Valve member for a duplex strainer
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US3452394A
|
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Extruder heads
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US3371545A
|
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Valve operating equipment
|
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US3392839A
|
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Multiple element strainer sandwich
|
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GB1045828A
|
|
Operating mechanism for fluid flow control valves
|
|
US3179253A
|
|
Double basket strainer
|
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US3218886A
|
|
Valve operator
|
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US3116755A
|
|
Means for simultaneously actuating plug valves in a duplex strainer
|
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GB917620A
|
|
Pressure control valve
|
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US2921687A
|
|
Means for simultaneously actuating opposed disc valves in a duplex strainer
|
|
US2893681A
|
|
Plug valve operating mechanism
|
|
US2622613A
|
|
Pressure control valve
|
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US2340397A
|
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Heat exchanger
|
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US2366451A
|
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Strainer
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