Emerson manual DanielTM Model 788 DVC digital control valves

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Operating and Maintenance Instructions

Part Number- 3-9008-556 Revision D

December 2012

DanielTM Model 788 DVC digital control valves

2", 3", 4", 6" and 8" sizes

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Contents DanielTM Model 788 DVC digital control valves This page intentionally left blank Important safety instructions Product operation personnel Safety alert symbol Safety signal words and symbolsThis page intentionally left blank Page Warranty and limitation of liability Introduction Tables FiguresAggressive Products Danieltm Model 788DVC Digital Control Valves IntroductionEquipment Damage Principle of OperationOperational Sequence Closed Position Open Control Position Open Position no control Safe Working Temperature Ranges Do not exceed specifications listed belowPressure Class Maximum Safe Working PressureValve Capacity ConnectionsFlow vs. Pressure Drop See Figure Flow vs Pressure Loss Materials of Construction Main Valve Body Pressure/Temperature RatingsCylinder Head Main Valve CylinderTubing Astm A352 LCC WCB Dimensions Valve Size 150# Ansi 300# Ansi No Indicator With Indicator Recommended Installation Instructions General Considerations as Applied to the DL8000 Use equipment for its intended purpose Personal Injury or Death AND/OR Property DamageTypical Application Top Loading Typical Application Bottom Loading Control Valve Configuration new for DL8000 Cylinder Assembly Removal All Daniel Valves Cylinder Disassembly Recommended Low Flow Set-point Cylinder Reassembly Retrofit Cup-seal Replacement on Existing AP Option PistonOption Assembly Danieltm Model 788DVC Digital Control Valves Personal Injury AND/OR Equipment Damage Danieltm Model 788DVC Digital Control Valves Troubleshooting Condition Probable Cause Correction Danieltm Model 788DVC Digital Control Valves Parts List Parts List 2, 3, 4, 6, 8 Sizes Recommended Spare Parts Valve Cylinder Assembly Infectious Radioactive Explosive Pyrophoric Poison Gas Decontamination/Cleaning Fluids ProcessShipping Requirements Page W .em erson.com