BASIC OPERATION AND FUNCTION OF CONTROL VALVES
actuator: An actuator is a pneumatic hydraulic, or electrically powered device which supplies force and motion to open or close a valve. airset: A regulator which is used to control the supply pressure to the valve actuator and its auxiliaries. angle valve: A valve design in which one port is collinear with the valve stem or actuator, and the other
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BASIC OPERATION AND FUNCTION OF CONTROL …
www.controlglobal.comValve Positioner Basics----- 9 Control Loop Action ... control valve: A valve which controls the flow rate or flow direction in a fluid system.
FLUID FLOW BASICS OF THROTTLING VALVES
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CONTROL VALVE HANDBOOK
www.controlglobal.comFisher is a mark owned by Fisher Controls International LLC, a member of the Emerson Process Management business division of Emerson Electric Co. The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their respective owners.
REGULATOR – PRINCIPLE OF OPERATION
www.controlglobal.com17. HARD FACING – A material harder than the surface to which it is applied; usually applied to valve seats to resist galling or fluid erosion. 18. SINGLE SEATED – A valve having a plug with a single seat. 19. DOUBLE SEATED – A valve featuring a plug with two seats. 20. BALANCED – A valve featuring a pressure balanced plug with two ...
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www.vikinggroupinc.comFeb 19, 2010 · the release line, the pneumatic actuator opens to vent the pressure in the deluge valve priming chamber and release the water faster than it can be replaced through the restricted priming line connection, opening the deluge valve (see Figure 8c). 2. Hydraulic Release