Emerson Fisher DFA - Installation

Instruction Manual
D103643X012
DFA Desuperheater
August 2013
4
Installation
WARNING
Always wear protective gloves, clothing, and eyewear when performing any installation operations to avoid personal
injury.
Personal injury or equipment damage caused by sudden release of pressure may result if the desuperheater is installed
where service conditions could exceed the limits of the pressure class noted on the nameplate. To avoid such injury or
damage, provide a relief valve for over pressure protection as required by government or accepted industry codes and
good engineering practices.
Check with your process or safety engineer for any additional measures that must be t aken to protect against process
media.
If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this
instruction manual.
Table 2. Desuperheater Connection Size
Design Steam Line Size, NPS
Steam Line Connection
Size, NPS ASME Pressure Rating Raised-Face Flange(1)
DFA 8-60 3or4 CL150-2500
1. Other standard flanges and connections are also available.
Table 3. Available Valve Connections
Valve Inlet Size, NPS
ASME Pressure Rating Raised-Face
Flange(2)
Connection
Inlet
(1,2,3)
Outlet
(1,2)
1,1-1/2, and 2 CL150-2500 RF, RTJ, BW, and SW RF
1. End connection style abbreviations: RF-Raised Face, RTJ-Ring Type Joint, BW-Butt weld, SW-Socket Weld.
2. EN (or other valve body material) ratings and end connections can usually be supplied; consult your Emerson Process Management sales office.
3. Socket weld available on NPS 1, 1-1/2, and 2 only.
Table 4. Fisher DFA Dimensions
DESUPERHEATER BODY FLANGE
(1)
E
INLETCENTERLINETOOUTLETFLANGEFACE
(2)
F
INLETFLANGEFACETOOUTLETCENTERLINE
(2)
Size, NPS Pressure Rating mm Inches mm Inches
3and4
CL150-1500 152 6 229 9
CL2500 178 7 241 9.5
1. The NPS 4 DFA requires a 4.00 inch minimum mounting I.D. Contact your Emerson Process Management sales office for NPS 3 DFA minimum mounting I.D.
2. For different centerline to flange face distances Contact your Emerson Process Management sales office.
Table 5. Fisher DFA Installation Dimensions
DESUPERHEATER
BODY FLANGE SIZE,
NPS
(“D” DIMENSION)
PIPE LINE
(“B” DIMENSION)
INSERTION LENGTH
(“T” DIMENSION)
T-HEIGHT
Size, NPS mm Inch mm Inch
3and4
8 332 13.00 222 8.75
10 358 14.25 222 8.75
12 384 15.25 222 8.75
14 400 15.75 222 8.75
16 425.4 16.75 222 8.75
18 451 17.50 216 8.50
20 477 17.75 222 8.75
22 502 17.75 222 8.75
24 527 17.75 222 8.75
30 600 17.63 219 8.63