BASIC OPERATION AND FUNCTION OF CONTROL VALVES
dual sealing valve: A valve that uses a resilient seating material for the primary seal and a metal-to-metal seat for a secondary seal. end connection: The configuration provided to make a joint with the pipe. - end connections, flanged: Valve body with end connections incorporating flanges that mate with cor-responding flanges on the piping.
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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.
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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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