2
Operating conditions and
specifications
Topics covered in this chapter:
•
Operating conditions for the control valve
•
Specifications for the control valve
2.1
Operating conditions for the control valve
Operating conditions for the control valve
Table 2-1:
Condition type
Description
Fluid phase
Liquid
Process temperature
-26°C to 205°C (-15°F to 400°F)
Optional process tempera-
ture
-46°C to 205°C (-51°F to 400°F)
Fluid velocity
Operational recommended flow velocity up to 58 ft/sec, beyond this
point will result in a high pressure drop and increased wear.
Fluid(s) controlled
•
Low/Medium viscosity crude oils and condensates
•
Refined products and intermediates (ie:
gasoline, diesel, kerosene,
light fuel oils, jet fuel, LPG, butanes, naphtha, alkylate, reformate,
straight run gasoline, cat-cracked gasoline
)
•
Petrochemicals (ie:
benzene, toluene, xylenes, cumene, olefins, py-
rolysis gasoline
)
•
Natural gas liquids
Viscosity limits on valves
•
Maximum valve viscosity is 8800 Cst
•
Maximum viscosity for valves with pilots is 440 Cst due to re-
sponse time of high viscosity pilot
Differential pressure
The maximum allowable differential pressure across a control valve is
6894 kPa (1,000 psi). Consult factory for location of first shut down
valve.
Atmospheric pressure
Absolute
Sizes (NPS)
2, 3, 4, 6, 8,10,12,16
Pressure class (ANSI)
150, 300, 600
Maximum safe working
temperature range
•
-26°C to 205°C (-15°F to 400°F)
•
Using FKM O-rings
•
Temperature range is dependent of O-ring T
min
and T
max
•
Consult the factory for other safe working temperatures
Operating conditions and specifications
User manual
43
Содержание Daniel 762
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Страница 47: ...Models 762 763 765 766 and 767 Control Valves NPS 16 Figure 1 6 Introduction User manual 37 ...
Страница 52: ...Introduction 42 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 72: ...Prepare the control valve for use 62 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 74: ...Install 64 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 82: ...Installation prerequisites 72 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 88: ...Testing the product 78 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 89: ...Part III Operate Operate User manual 79 ...
Страница 90: ...Operate 80 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 96: ...Maintain 86 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 112: ...Decommission 102 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 113: ...Decommission User manual 103 ...
Страница 114: ...Decommission 104 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 115: ...Decommission User manual 105 ...