www.forbesmarshall.comEnergy Conservation | Environment | Process Efficiency

Description

Forbes Marshall Flash Vessel, FMFV, is particularly

suited to boiler blowdown heat recovery systems where

efficient separation of flash steam from blowdown is

essential to prevent contamination of the boiler feedtank

and /or heat transfer surfaces. It is equally suited to

condensate flash steam applications.

Limiting Conditions

Sizes and Pipe Connections

Limiting Conditions (IBR / ASME) CLASS 150 CLASS 300

PMO - Maximum operating pressure 10.5 bar g 28.8 bar g

TMO - Maximum operating temperature 180°C 233°C

Cold hydraulic test pressure 15.8 bar g 43.2 bar g

Flash Vessel Safety Valve Float trap Strainer Sight Glass

DN 150 DN 20 DN50 DN 50 DN 50

DN 200 DN 20 DN50 DN 50 DN 50

DN 300 DN 40 DN50 DN 50 DN 50

DN 375 DN 50 DN50 DN 50 DN 50

Available Accessories

Material (Non-IBR)

Item Description Material Standard

No

1 Main shell Carbon steel IS 3589

2 Dish end Carbon steel IS 2062

3 Flash steam

outlet flange Carbon steel SA 516 Gr. 70

4 Elbow ASTM A105

5 DN50 Drain

assembly Carbon steel

6 Support legs Carbon steel IS 2062

7 Nozzle pipe Carbon steel IS 1239 Class C

8 Safety valve Gun metal BS 1400 LG2

9 Syphon Carbon steel ASTM A106 Gr.B

10 Pressure gauge Stainless steel SS 304

11 Trap set

11.1 Strainer Cast iron IS 210 Gr. FG260

11.2 Float trap Cast iron IS 210 Gr. FG260

11.3 Sight glass Cast iron IS 210 Gr. FG260

Forged carbon steel

Sizes : DN150, 200, 300, 375

Available in flanged connections to -

ASME CLASS 150 & CLASS 300

EN 1092 PN16

Note: Available with IBR Test certificate on request.

CLASS 150 & PN16 FMFV GENERAL ASSEMBLY

Limiting Conditions (EN1092-1) PN16

PMO - Maximum operating pressure 11.5 bar g

TMO - Maximum operating temperature 180°C

Cold hydraulic test pressure 17.2 bar g

VIEWGLASS

SAFETYVALVE

3

78

43

7

6 5

11

FOUNDATION DETAILS

ØE

P.C.D.

Forbes Marshall Flash Vessel with Insulation Jacket

FMFV

Material (IBR & ASME)

Item Description Material Standard

No

1 Main shell Carbon steel ASTM A106 Gr.B

2 Dish end Carbon steel ASTM A234 Gr. WPB

3 Flash steam

outlet flange Carbon steel ASTM A516 Gr.70

4 Elbow ASTM A234 Gr. WPB

5 DN50 Drain

assembly Carbon steel

6 Support legs Carbon steel -

7 Nozzle pipe Carbon steel ASTM A106 Gr.B

8 Syphon Carbon steel ASTM A106 Gr.B

9 Pressure gauge Stainless steel SS 304

10 Drain module/Trap set

10.1 Strainer Carbon steel ASTM A216 Gr. WCB

10.2 Float trap Carbon steel ASTM A216 Gr. WCB

Carbon steel

How to OrderExample : DN 300 Forbes Marshall Flash Vessel, FMFV, with insulation jacket & accessories, Flange connections as per ASME or PN16 as per customer requirement.

InstallationThe flash vessel should be mounted with the flash steam outlet at the top and connected as indicated in diagrams. Each flash vessel incorporates a screwed socket for mounting of pressure gauge along with U type syphon. Drainage can be done by opening DN50 blank flange provided at the bottom of the flash vessel. Connection is provided on the vessel for mounting of safety valve and DN50 flange is provided at the bottom for mounting of float trap set (float trap, strainer and sight glass) which is a part of the flash vessel accessories.

Dimensions (approx.) in mm

Size (DN) A B C D Weight

150 168 1504 118 910 65 Kg

200 219 1793 100 1056 100 Kg

300 324 1547 119 889 142 Kg

375 400 1760 110 1038 190 Kg

Foundation Details (approx.) in mm

FMFV Size BOLT HOLE PCD No.of

(DN) Bolts (ØE) (ØF)

150 16.5 372 6

200 16.5 472 6

300 16.5 546 6

375 16.5 638 6

SAFETYVALVE

3

7

43

7

6 5

11

FOUNDATION DETAILS

ØE

P.C.D.

CLASS 300 FMFV GENERAL ASSEMBLY

**

** Safety valve is not part of standard supply. It is to be ordered separately.

How to sizeUse the chart below to select the appropriate flash vessel. It is necessary to know the pressure on the steam traps or boiler pressure in the case of blowdown heat recovery, the flash steam pressure (desired or existing) and the condensate or blowdown flow rate.

Example 1: (solid lines)A boiler plant operating at 10 bar g has a TDS control blow down flow rate of 2500kg/h (3 boilers at 833 kg/h each). The flash steam from the blow down is to be added to the low pressure steam system operating at 1 bar g.

• From boiler pressure move horizontally to flash steam pressure -A

• Drop vertically to blow down flow rate in kg/h -B

• Follow curve to right-hand scale and across to same flash pressure -C

• Move upwards to flash vessel size. Select flash vessel-in this case a DN 200 FMFV is required.

Example 2: (dotted lines)A plant operating on steam at 8 bar g condenses 4000kg/h of steam. Flash is to be recovered at 0.5 bar g.

• From pressure on steam traps move horizontally to flash steam pressure -A1

• Drop vertically to condensate flow rate in kg/h -B1

• Follow curve to right hand scale and across to same flash pressure -C1

• Move upwards to flash vessel size. Select flash vessel in this case an DN 300 FMFV is required.

DN 375

DN 300

DN 200

DN 150

Flash vessel size

DOC# FMSS/0317/TIS-FMFV/R1

Opp 106th MilestoneBombay Poona RoadKasarwadi, Pune - 411 034. INDIATel : 91(0)20-27145595, 39858555Fax : 91(0)20-27147413

B-85, Phase II, Chakan Indl AreaSawardari, Chakan, Tal. KhedDist. Pune - 410 501. INDIATel : 91(0)2135-393400

A-34/35, MIDC H BlockPimpri, Pune - 411 018. INDIA.Tel : 91(0)20-27442020, 39851199Fax : 91(0)20-27442040

Email : seg@forbesmarshall.com, ccmidc@forbesmarshall.com www.forbesmarshall.comCIN No.: U28996PN1985PTC037806

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Information, designs or specifications in this document are subject to change without notice. Responsibility for suitability, selection, installation, use, operation or maintenance of the product(s) rests solely with the purchaser and/or user. The contents of this document are presented for informational purposes only. FM Group disclaims liabilities or losses that may be incurred as a consequence of the use of this information.