Subject: Pressure Reducing Ball Valve with Hydraulic Cylinder Actuator.
Industry: Potable fresh water at 100 psig upstream to 40-50 psig downstream.
Looking for: Hydraulic Cylinder actuation pilot schematic.
Background: Existing valve is a 12" throttling full port Ball Valve in a municipal potable water application. (typical wet dirty vault - cramped for room) Existing actuator is a Limitorque motor actuator, manually adjusted through remote SCADA control. Valve has terrible control due to large BV size relative to the flow rate and pressure drop.
However Rexa requires power.  It does not meet the "self-contained regulator" type requirement.  Many globe style valves are available in a self-contained arrangement.  I think that they are typically in gas service instead of water.  Contact your valve sales woman to discuss this application.

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