This specification sets forth the minimum requirements for the design, fabrication, testing, delivery shipment and performance of Expander Butterfly Valves, each one with this his proper electrohydraulic actuator and HPCU-Hydraulic Power and Control Unit, to be used in a Power Recovery System with Expander of FCCU-Fluid Catalyst Cracking Units.
The Expander Butterfly Valves used at FCC Units are the following:
Expander inlet shutoff Butterfly Valve;
Expander inlet control Butterfly Valve;
Expander main by-pass control Butterfly Valve;
- Expander small by-pass control Butterfly Valve.
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