Emerson Digital Controller Valves 788 DVC Instrukcja Obsługi Pobierz pdf (Strona 18)

DEC 2012 DANIEL MODEL 788DVC DIGITAL CONTROL VALVES

SPECIFICATIONS3-2

INMETRO Certification:

- Certificate Number: NCC 12.1244 X

- INMETRO Marking: Ex d nC IIB T3 Gc

Ex d IIC T* Gb

*See Tables 1 and 2 in the certificate for temperature range details.

Special condition for safe use: When the digital control valve is assembled with solenoid models

80174, 80173, 80143, 80144, HP80143, 8014G2 and F8003G1, the temperature of the process fluid

must not be greater than 40°C.

Connections

2" through 6" ANSI flanged

Valve Capacity

Valve Size 2" 3" 4" 6" 8"

Cv* - gpm 86 186 309 688 1296

*Cv based on valve full open using water at 60/ F (16/ C)

For Valve Flow vs. Pressure Loss see Figure 3-1. Consult manual 3-9008-550, Capacity

Charts for valve sizing.

Flow vs. Pressure Drop (See Figure 3-1)

Curve A - Wide open valves with no spring resistance.

Applicable to pilot operated valves with Y and Z ports vented to sump, atmosphere or pump station.

Curve B - Light main valve spring.

Applies only to On-Off valves, rate of flow control valves and check valves with ANSI 150 to 300

lb. flanges.

Curve C - Medium main valve spring.

Applies to all modulating control valves except rate of flow and valves using ANSI 600 lb. flanges.

Curve D- Heavy main valve spring.

Applies to all valves using ANSI 600 lb. flanges.

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Emerson Digital Controller Valves 788 DVC Instrukcja Obsługi Strona 18