Emerson Fisher DFA Instruction Manual Download Page 11

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Instruction Manual

D103643X012

DFA Desuperheater

August 2013

Parts List

Key

Description

Nozzle Mount

2* Spray Nozzle
3

Body Flange

4* Desuperheater Gasket
5

Alignment Pin

6* Seat Gasket
7* Seat
8* Plug Stem Assembly
9* Cage

Valve Body

11* Bonnet Gasket
12

Bonnet Stud

Bonnet Stud Nut

Bonnet

15* Packing Box Ring
16* Lantern Ring
17* Packing Rings
18

Packing Follower

Packing Flange

Packing Flange Nut

Packing Flange Stud

Table 9. Desuperheater Gasket

VALVE SIZE, NPS

CLASS

PART NUMBER

3 and 4

CL150 - CL1500

12B4275X042

Table 10. Bonnet Parts

VALVE SIZE, NPS

CLASS

BULLETIN/

INSTRUCTION

MANUAL

1, 1-1/2, and 2

CL150 - CL600

1, 1-1/2, and 2

CL900 - CL2500

HPA

Table 11. Trim Parts

VALVE SIZE, NPS

CLASS

BULLETIN/

INSTRUCTION

MANUAL

1, 1-1/2, and 2

CL150 - CL600

1, 1-1/2, and 2

CL900 - CL2500

HPA

Table 12. Fisher DFA Weights

(1)

OUTLET CONNECTION

INLET CONNECTION

CLASS

APPROXIMATE WEIGHT

lbs

600

128

283

1500

183

403

2500

253

558

1-1/2

600

137

301

1500

193

426

2500

273

602

600

138

304

1500

206

454

2500

287

633

600

179

394

1500

224

494

2500

312

688

1-1/2

600

191

420

1500

237

522

2500

337

743

600

193

425

1500

253

558

2500

354

781

1. Desuperheater section weighs about 11.4 kg (25 lbs).

*Recommended spare parts

Summary of Contents for Fisher DFA

Page 1: ... and follow all the contents of this manual including all safety cautions and warnings If you have any questions about these instructions contact your Emerson Process Management sales office before proceeding Description The Fisher DFA desuperheater flexible architecture figure 1 incorporates both a water control element and a variable geometry mechanically atomized self contained desuperheater fo...

Page 2: ...rcentage 5 Cavitrol III Linear Micro Flat Linear Flow Direction Standard Cage Micro Flat Flow down Cavitrol III Cage Flow down Bonnet Style and Mounting 1 Standard Bonnet Yoke Temperature Limit Standard bonnet with cast iron yoke is limited to 537_C 1000_F Packing Arrangements J Single J Double and J Leakoff standard graphite packing or optional J ENVIRO SEAL and J HIGH SEAL packing systems See bu...

Page 3: ...ater nozzle styles the spraywater quantity is controlled by internal control valve which responds to signals received from the temperature control system The water enters the main tube of the desuperheater passes through the spray nozzle and discharges into the steam line as a fine atomized spray see figure 4 Each particular nozzle or set of nozzles in the sprayhead is tailored to meet a specific ...

Page 4: ...et 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 N...

Page 5: ...ommended Failure to do so may result in clogging of the desuperheater by solid particles thus hampering temperature control of the steam 3 A minimum straight run of pipe is required downstream of the desuperheater to ensure complete vaporization of cooling water Consult the desuperheater certified drawing for the required distance of straight pipe 4 The temperature sensor should be mounted accordi...

Page 6: ...er D Use lock out procedures to be sure that the above measures stay in effect while you work on the equipment D Check with your process or safety engineer for any additional measures that must be taken to protect against process media When subjected to normal operating conditions it is possible that wear blockage and or weld fatigue will occur to the desuperheater body or nozzle assembly During r...

Page 7: ...rnate similar pressure water line to the unit If this spray pattern is not present replacement is recommended 3 Grind off the tack welds holding the nozzle in place Apply a penetrant type thread lubricant and allow to soak prior to unscrewing the nozzle Using the provided flats on the side of the spray head unscrew the nozzle 4 Grind excess tack weld material off of both the nozzle and desuperheat...

Page 8: ...eeler gauge to measure the distance between the nozzle body near the water injection ports to the side of the spring casing as outlined in figure 4 This measurement must match the factory set plug travel for the corresponding nozzle type as shown in table 7 10 Inspect nozzle threads for damage and clean if needed if damage is present nozzle replacement will be necessary 11 Rinse both the desuperhe...

Page 9: ... setpoint is not reached Check water source availability and pressure Temperature setpoint is not reached Check nozzle s for plugging Temperature setpoint is not reached Make sure that steam saturation pressure is not above setpoint Temperature setpoint is not reached Check to ensure full actuator stroke is reached on the spraywater control valve Temperature setpoint is not reached Check for prope...

Page 10: ...r when contacting your Emerson Process Management sales office for technical assistance When ordering numbers for each part required the key numbers on figure 7 can be used to help in part identification WARNING Use only genuine Fisher replacement parts Components that are not supplied by Emerson Process Management should not under any circumstances be used in any Fisher valve because they may voi...

Page 11: ...150 CL1500 12B4275X042 Table 10 Bonnet Parts VALVE SIZE NPS CLASS BULLETIN INSTRUCTION MANUAL 1 1 1 2 and 2 CL150 CL600 EA 1 1 1 2 and 2 CL900 CL2500 HPA Table 11 Trim Parts VALVE SIZE NPS CLASS BULLETIN INSTRUCTION MANUAL 1 1 1 2 and 2 CL150 CL600 EA 1 1 1 2 and 2 CL900 CL2500 HPA Table 12 Fisher DFA Weights 1 OUTLET CONNECTION INLET CONNECTION CLASS APPROXIMATE WEIGHT kg lbs 3 1 600 128 283 1500...

Page 12: ... All sales are governed by our terms and conditions which are available upon request We reserve the right to modify or improve the designs or specifications of such products at any time without notice E 2013 Fisher Controls International LLC All rights reserved Fisher is a mark owned by one of the companies in the Emerson Process Management business unit of Emerson Electric Co Emerson Process Mana...

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