Emerson 788 DVC Materials of Construction Main Valve Body, Cylinder Head, Main Valve Cylinder

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D E C 2012

DANIELTM MODEL 788DVC DIGITAL CONTROL VALVES

Materials of Construction

Main Valve Body

steel, ASTM-352 LCC

Cylinder Head

steel, ASTM-352 LCC

Main Valve Cylinder

steel

nickel coated steel

Main Valve Piston

Standard: stainless steel

Seat Ring

steel

nickel coated steel

Seals

steel

O-rings

Standard: Viton® dynamic, Buna-N

Optional: EPR, Kalrez®, Low-Swell Nitrile, Neoprene™, Viton®-A, Viton®-GFLT

Optional

Visual position indicator

Microswitch-type indicator

AP (aggressive products) option

Pressure/Temperature Ratings

The maximum working pressure for the Model 700B Series Control Valve is based on temperature/pressure rating of the ANSI B16.5 flanges. The Table 3-2 lists the maximum working pressure of ASTM 352 LCC WCb at 100°F.

3-4	SPECIFICATIONS

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Contents DanielTM Model 788 DVC digital control valves This page intentionally left blank Important safety instructions Product operation personnel Safety signal words and symbols Safety alert symbolThis page intentionally left blank Page Warranty and limitation of liability Introduction Figures TablesDanieltm Model 788DVC Digital Control Valves Introduction Aggressive ProductsPrinciple of Operation Equipment DamageOperational Sequence Closed Position Open Control Position Open Position no control Do not exceed specifications listed below Safe Working Temperature RangesPressure Class Maximum Safe Working PressureFlow vs. Pressure Drop See Figure ConnectionsValve Capacity Flow vs Pressure Loss Pressure/Temperature Ratings Materials of Construction Main Valve BodyCylinder 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 Personal Injury or Death AND/OR Property Damage Use equipment for its intended purposeTypical 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 Cup-seal Replacement on Existing AP Option Piston RetrofitOption 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 Decontamination/Cleaning Fluids Process Infectious Radioactive Explosive Pyrophoric Poison GasShipping Requirements Page W .em erson.com