Pressure Regulators - Unigaz · >Pressure regulators Introduction DIVAL 700 series pressure regulators are direct acting devices for low and medium pressure applications controlled

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> Pressure regulators

Introduction

DIVAL 700 series pressure regulators are direct acting devices for low and medium pressure applications controlled by a

diaphragm and counter spring.

These regulators are suitable for use with previously filtered, non corrosive gases.

Dival Fig.1

TR Head

Main Features

Modular design of pressure regulator DIVAL 700 series allows application of slam shut on the same body without

changing the face-to-face dimension.

Furthermore the truly “top entry design” allows an easy periodical maintenance without removing body from the line.

DIVAL 700 series regulators have features that make it particulary suitable for applications in process where

sudden rate variations may occur (for example, applications on industrial burners with considerable sudden flow rate

changes). DIVAL 700 series is designed to working with internal sensing line.

An extremely easy maintenance and a reduced number of parts are the background of low cost operation.

Accessory on request:

-Incorporated relief valve.

Dival series 700 Dival series 700 + LA/...

DesignedWith YourNeeds In Mind

- Compact Design - High Turn Down Ratio- Easy Maintenance - Good Accuracy- Top Entry - Low Operation Cost- Fast Response Time - Wide Range of Applications

>

Materials

Main Features

-Design pressure: up to 20 bar (290 Psi)

-Design temperature: -20 °C to +60 °C (-4 to + 140 °F)

-Ambient temperature: -20 °C to +60 °C (-4 to + 140 °F)

-Max inlet pressure Pu: According to table

Body Head coversDiaphgram Valve seatSeals

Cast steel ASTM A216 WCB Ductile iron GS 400-18 ISO 1083 Die cast alluminium GD AI Si 13FE Uni 5070Rubberized canvasBrassNitril rubber

The characteristics listed above are referred to standard products.

Special characteristics and materials for specific applications may be supplied upon request.

Seat (Inches)

Pu max (bar)

1/2”

8,63

1/4”

8,63

3/8”

8,63

1”1/4

2,07

3/4”

5

1”

3,45

-Outlet pressure range of Wds: 16 to 1000 mbar (6"w.c. to 15 psig)

-Available size DN: 1” -1”1/4 - 1"1/2 - 2”

-Flanging: class PN 16/25 according to ISO 7005-1, ISO 7005-2; class ANSI 150RF according to ANSI B16.5,

ASME B16.42 and class ANSI 125 FF according to ASME B16.1

-Threaded connections: DN 2" Rp ISO 7-1 or DN 2"NPTF ASME B1.20.1 (only ductile iron)

5

7

10

15

23

38

50

81

95

Pd min(mbar)

d=3,2 De=65 Lo=180White (2701175)

d=3,5 De=65 Lo=180Yellow (2701345)

d=4 De=65 Lo=180Orange (2701620)

d=4,5 De=65 Lo=180Red (2702190)

d=5 De=65 Lo=180Green (2702190)

d=5,5 De=65 Lo=180Black (2702370)

d=6 De=65 Lo=180Blue (2702540)

d=6,5 De=65 Lo=180Light Blue (2702730)d=7 De=65 Lo=180

Brown (2702950)

Pd min(mbar)

13

19

32

53

80

127

173

280

372

6

8

12

17

24

41

53

82

100

Pd min(mbar)

Pd min(mbar)

16

21

34

55

83

129

178

280

380

7

8

12

18

24

43

55

82

105

Pd min(mbar)

Pd min(mbar)

17

22

34

56

84

131

179

287

386

10

11

15

21

29

48

56

88

110

Pd min(mbar)

Pd min(mbar)

20

25

38

60

89

143

188

299

395

Seat 1/4” Seat 3/8” Seat 1/2” Seat 3/4”SPRING(dimension and color)

Ø 280 Head

Table 1: Spring range data Inlet pressure = 1,7 bar

13

14

19

25

32

48

61

94

113

Pd min(mbar)

Pd min(mbar)

22

27

40

62

90

142

191

303

401

16

18

22

25

36

52

65

98

120

Pd min(mbar)

Pd min(mbar)

26

32

45

67

97

147

197

306

404

Seat 1” Seat 1”1/4

164

292

357

Pd min(mbar)

d=7 De=65 Lo=150Light Blue (2702940)d=7,5 De=65 Lo=150

White/Yellow (2702125)d=8 De=65 Lo=150

White/Orange (2703325)

Pd min(mbar)

753

1150

1391

170

317

369

Pd min(mbar)

Pd min(mbar)

778

1160

1402

188

324

347

Pd min(mbar)

Pd min(mbar)

779

1156

1403

207

351

385

Pd min(mbar)

Pd min(mbar)

807

1170

1412

Seat 1/4” Seat 3/8” Seat 1/2” Seat 3/4”SPRING(dimension and color)

Ø 280/TR Head

259

365

400

Pd min(mbar)

Pd min(mbar)

844

1194

1430

261

380

458

Pd min(mbar)

Pd min(mbar)

863

1216

1454

Seat 1” Seat 1”1/4


Table 2: Outlet pressure change (mbarg) as result of a 0,5 Barg Inlet Pressure Change

0,2

0,2

0,2

0,3

0,3

0,4

0,4

0,9

1

d=3,2 De=65 Lo=180White (2701175)

d=3,5 De=65 Lo=180Yellow (2701345)

d=4 De=65 Lo=180Orange (2701620)

d=4,5 De=65 Lo=180Red (2702190)

d=5 De=65 Lo=180Green (2702190)

d=5,5 De=65 Lo=180Black (2702370)

d=6 De=65 Lo=180Blue (2702540)

d=6,5 De=65 Lo=180Light Blue (2702730)d=7 De=65 Lo=180

Brown (2702950)

SPRING(dimension and color)

0,4

0,4

0,4

0,5

0,5

0,6

0,7

1

1,1

Ø 280 Head - Orefice size (Inches)

Ø 280 TR Head - Orefice size (Inches) d=7 De=65 Lo=150Light Blue (2702940)d=7,5 De=65 Lo=150

White/Yellow (2702125)d=8 De=65 Lo=150

White/Orange (2703325)

0,5

0,5

0,6

0,7

0,9

0,9

1,1

1,3

1,5

2

2

3

2,4

2,4

2,4

2,6

2,3

2,4

2,6

3,1

3,7

3,4

3,4

3,4

3,5

3,6

3,7

3,8

3,9

4,6

1,3

1,3

1,3

1,4

1,5

1,6

1,9

2,8

3,5

3

3

5

5

5

6

11

11

11

18

18

18

28

29

29

1/4” 3/8” 1/2” 3/4” 1” 1”1/4

Type of gasAirPropaneButaneNitrogenOxygenCarbon dioxide

Relative density1.01.532.00.971.141.52

Fc Factor0.780.630.550.790.730.63

Table 3: Correction factors FC

The flow rate values indicated on the following tables are valid for natural gas having a relative density of 0.61 w.r.t. air and a regulator inlet temperature of 15 °C. For gases having a different relative density S and temperature t in °C, the value of the flow rate, calculated as above, shall be multiplied by a correction factor, as follows:

)16.273(

8.175

tSFc

+x=

Table 3 lists the correction factors Fc for anumber of gases at 15 °C.

Control Heads

Outlet pressure range is determined by the control head installed. The control heads used are:- heads Ø 280 from 16 to 340 mbar- heads Ø 280/TR from 300 to 1000 mbar

Regulator Dival 700 - DN 40 performance

AC 20AC 10

40

35

30

25

20

10

5

0

15

0 100 200 300 400 500 600

Outlet pressure(mbar) Orifice size = 1/2”

Outlet pressure set = 20 mbar

Pu= 0,14 barPu= 0,34 barPu= 2 barPu= 4 barPu= 6 barPu= 8 bar

Rate of flow (stmc/h gas)

Fig.2


DIVAL SERIES 700

0,0710154045

OUTLETPRESSUREmbar (Pd)

20

50

70

100

138

300

345

Capacity in stmc/h (Natural gas) INLET PRESSURE bar (Pu)

0,11220455010203040

0,1415255058122535501017253810203045

0,34254570

100255070

100254580

102255063

105205076

101104561

101

0,323406585204060802540659020405713019354885

0,22030596515304060173049671530456510253265

0,5305595

150305580

1103050

100110306085

110306085

120306085

130245070

110

0,73570

1001753570

1001203570

1101233570

1001203580

1171513080

1021873074

108114

1,04590

1052005090

1101305090

1101354590

1201354590

1201404595

13017040

100130170

1,3860

10011022560

10512014060

10715014765

12014022068

13215419968

13215419966

133203250

2,075

14018025075

12016023075

12820025075

13017018575

14018223475

14018223475

140250300

3,0010014019027010013016527010014025025095

150180210100150180320100170200240100180340360

4,00120140200300125140170270130150250250130180195220130215213244130220424466130220400420

5,00140140200320150220240270145165250250150200220235150215225250150280450480150280500450

6,00150150200

180200200

180180250

180200230

180214239

180320474

180320550

8,008080

200

95125200

180180250

120200230

125254284

230420484

230420600

Inches1/4"3/8"1/2"3/4"1/4"3/8"1/2"3/4"1/4"3/8"1/2"3/4"1/4"3/8"1/2"3/4"1/4"3/8"1/2"3/4"1/4"3/8"1/2"3/4"1/4"3/8"1/2"3/4"

OREFICESIZE

DN 25 - 1"

Capacity Tables

Flow at AC 20

DIVAL SERIES 700

0,07


400

500

750

1000


0,10 0,14 0,340,300,20 0,50255070

100

0,702580

1101802585

100170

1,0055

1051402174095

1352203090

125200

1,385095

1902525090

1602504580

1502504065

144200

2,0075

14026033075

14025034065

12024035060

100225300

3,00100180320420100180320420100180325400100180340400

4,00130220420500130220450500130220450500130220460500

5,00150280500600150280500600150280550600150280600700

6,00180320600

180320600

180320650

180320700

8,00230420650

230420750

230420850

230420950

Inches1/4"3/8"1/2"3/4"1/4"3/8"1/2"3/4"1/4"3/8"1/2"3/4"1/4"3/8"1/2"3/4"

OREFICESIZE

DN 25 - 1"

Flow at AC 20


DIVAL SERIES 700

0,0710173550


20

50

70

100

138

300

345


0,101222407010203045

0,1415274485152535501735506910254050

0,34254580

14025506580255484

102255065

110205069

129104461

109

0,30234270130204050652250759522405795194565110

0,2021335010017304055204060751530457010355584

0,503056

10017030607590306590

110306085

120306090

140306590

150245473

128

0,703570

120200357085

1003572

1011253570

1101353580

1291493078

1061903075

108183

1,004590

150220458095

1154595

1201354590

1251504595

14017040

10514523540

105155250

1,3860

1052002506090

11013060

10515015060

11015517060

11216719155

12019731250

120205322

2,0075

14025030075

10512513072

12820020075

13017018575

13420621875

16025742175

160247486

3,0010014025030090

12514014510515525025095

160190210100175215225105220310500105220350510

4,00120140250300110145155165130176250250125190210220130218224226130280446591130280462554

5,00140140250300150180180185150180250250150200220235150220245255150320510615150320505590

6,00150150250

140150170

180180250

180205230

180225271

180380584

180380571

8,008080

100

7580

120

103102230

110150300

125242300

230500600

230500600

Inches1/4"3/8"1/2"3/4"1/4"3/8"1/2"3/4"1/4"3/8"1/2"3/4"1/4"3/8"1/2"3/4"1/4"3/8"1/2"3/4"1/4"3/8"1/2"3/4"1/4"3/8"1/2"3/4"

ORIFICESIZE

DN 32 - 1"1/4

Flow at AC 20

Capacity Tables

DIVAL SERIE 700


400

500

750

1000

0,07


ORIFICESIZE

0,10 0,14 0,340,300,20 0,50255070

110

0,702580

1101802585

100170

1,0040

1051452404095

1402203080

125200

1,3850

12019832050

12019025045

1101802504090

169200

2,0075

16026037575

16025034065

15024035060

140225300

3,00120220320430110220320420115220325400115220340400

4,00130280420500130280450500130280450500130280460500

5,00150320500600150320500600150320550600150320600700

6,00180380500

180380600

180380650

180380700

8,00230500600

230500750

230500850

230500950

Inches1/4"3/8"1/2"3/4"1/4"3/8"1/2"3/4"1/4"3/8"1/2"3/4"1/4"3/8"1/2"3/4"

DN 32 - 1"1/4

Flow at AC 20


DIVAL SERIES 700


20

50

70

100

138

300

Inches1/4"3/8"1/2"3/4"1"

1"1/41/4"3/8"1/2"3/4"1"

1"1/41/4"3/8"1/2"3/4"1"

1"1/41/4"3/8"1/2"3/4"1"

1"1/41/4"3/8"1/2"3/4"1"

1"1/41/4"3/8"1/2"3/4"1"

1"1/4


0,071015255085100

0,1012253060901101025305090110

0,1415334377112124153040651101251530407010012510204065100130

0,201735508111813018354982124135203548831201381530478312014015304585120150

0,3020456712018013625477011517014326466711117014826406110416815626405395160165

0,34255378

126191141255073

120186150254869

115180157254563

109179166204155

101173178104560

105180210

0,50305990

141214158305683

134232189305378

129245211305071

122250242304662

113240270265572

125210240

0,703599

1401542412503596

1401712622703593

1401822762803575

1401992802973586

120200260320306590

150230270

1,0045

10016518128429045

10016520130932045

10016521432532945

10016523434035045

1001652593503604090

160200340400

1,3860

13019721533835060

13019523936738560

13019525438739260

12519527841041760

12020030842043055

120200250400500

2,0075

15024827142644075

15024530146348075

15024532148849075

15024535051051575

15025038853054075

150250350500620

3,00100200270361

100200325401550

100200320420570

100200330440550

100200336517550

100200350450550

4,00130270300354

130270337426

130270360460

130250390510

130270433580

130250400650

5,00150320350425

150350400512

150320430569

150320470656

150320520700

150320460800

6,00180357400

80376472

180380490

180380510

180380540

170380550

8,00230381430

230420500

230443530

230480550

230480550

230480700

ORIFICESIZE

DN 40 - 1"1/2

Capacity Tables

Flow at AC 20

DIVAL SERIES 700

0,07


345

400

500

750

1000


0,10 0,14 0,340,300,20 0,50255575

137210250156480

150230260

0,70306788

156230285257290

1802603002550

100200280300

1,004090

1302103404004090

1102153203504080

1152403303503060

100190250320

1,3850

11520026040050050

10512528040045050

1001303004004504590

1402803904104080

140210310410

2,0075

15024035054068075

15020035056068075

15019040055068065

15022041057068060

140258370520680

3,00100200250450550

100200270500550

100200320550550

100200350600600

100200350600600

4,00130250400730

130250400750

130260426800

130270450800

130270450780

5,00150300470876

150300500900

150300511900

150320550950

150320550950

6,00162380550

166380600

180380620

180380650

180380650

8,00230480750

230480780

230480800

230480800

230480800

Inches1/4"3/8"1/2"3/4"1"

1"1/41/4"3/8"1/2"3/4"1"

1"1/41/4"3/8"1/2"3/4"1"

1"1/41/4"3/8"1/2"3/4"1"

1"1/41/4"3/8"1/2"3/4"1"

1"1/4

ORIFICESIZE

DN 40 - 1"1/2

Flow at AC 20


DIVAL SERIES 700


20

50

70

100

138

300

Inches1/4"3/8"1/2"3/4"1"

1"1/41/4"3/8"1/2"3/4"1"

1"1/41/4"3/8"1/2"3/4"1"

1"1/41/4"3/8"1/2"3/4"1"

1"1/41/4"3/8"1/2"3/4"1"

1"1/41/4"3/8"1/2"3/4"1"

1"1/4


0,071015255085100

0,1012253060901101025305090110

0,1415334378114135153040651101301530407010012510205065100130

0,2017355090135160183560100125157203670851201461530709012014015357095120140

0,30204767120180200256080120170205356095120170215334080127180220306073135190225

0,34255578

141199227256575

135190235256571

127180250254573

135190240206276

144202236104565

105180210

0,503090

1282182252173089

1252052352503087

1211892472663060

105170250265307085

161240270345573

125210240

0,7035

10214424625525035

1001402302653003599

1402142803483575

1402052803253579

120200260320306590

150230270

1,0045

10017029030029057

10016527031533045

10016525233035545

10016527534035045

1001652833503604090

160200340400

1,3860

13019730338637860

13019530239138560

13019530239639060

13019531541041060

13020033642043055

120200250400500

2,0075

15025043145244075

15025040047548075

15025037849549075

15025041051051575

15025042453054075

150250350500620

3,00100220270500

100220325550600

100220320420600

100220330440600

100220350500600

100220250450600

4,00130270300500

130290340560

130280360460

130250405510

130295437580

130250400650

5,00150320350500

150320420

150320434

150320470

150320524700

150320460800

6,00180380400

180415460

180380506

180380510

180380540

180380550

8,00230480539

230480541

230480550

230480550

230480570

230480700

ORIFICESIZE

DN 50 - 2"

Capacity Tables

Flow at AC 20

DIVAL SERIES 700

0,07


345

400

500

750

1000


0,10 0,14 0,340,300,20 0,50355579

137210250356484

150230260

0,70306993

157236285407295

1802603003050

100200280300

1,004090

1302103404004090

1102153203504080

1152403303503060

100190250320

1,3850

11519026040050050

10512528040045050

1001303004004504590

1402803904104080

120320310414

2,0075

15024035054068075

15017035056068075

15018540059068065

15022041057068060

140200483520680

3,00100220250450600

100220280500600

100220320550600

100220350650

100220350725

4,00130250400700

130250420750

130260450800

130275450800

130278450800

5,00150300470805

150300515900

150300530900

150320550950

150320550950

6,00180380550

180380600

180380640

180380650

180380650

8,00230480750

230480800

230480800

230480800

230480800

Inches1/4"3/8"1/2"3/4"1"

1"1/41/4"3/8"1/2"3/4"1"

1"1/41/4"3/8"1/2"3/4"1"

1"1/41/4"3/8"1/2"3/4"1"

1"1/41/4"3/8"1/2"3/4"1"

1"1/4

ORIFICESIZE

DN 50 - 2"

Flow at AC 20


Slam-Shut Valve

This is a device which stops immediately gas flow (SAV) when, whatsoever downstream pressure exeeds given set-point. Device can be actuated also manually.

Incorporated LA/... Slam-Shut

Slam shut (see figure 3) can be incorporated on the standard regulator and on the in-line monitor. The regulator with the incorporated slam-shut has flow rate value equal to the basic regulator. A further advantage of the incorporated slam-shut valve is that it can be retro fitted at any time on a previously installed Dival 700 series without modifying the regulating unit.

The main features of this slam-shut device are:- design pressure 20 bar for all the components;- intervention for over pressure and/or under pressure;- accuracy (AG): ±1% of the pressure set-point for pressure increase; ±5% for pressure decreasing;- internal by-pass;- manual push-button control;- possibility of pneumatic or electromagnetic remote control;- compact overall dimensions;- easy maintenance;- possibility of application of devices for remote signal (contact or inductive microswitches).

Table 4 shows the available pressure switches

Pressure switchSet point range for Overpressure Wdo Set point range for Underpressure WduWorking pressure in bar

Table: 4 Slam-Shut pressure switches

LA/BP0,030 ÷ 0,1800,006 ÷ 0,060

LA/TR0,25 ÷ 5,50,1 ÷ 3,5

LA/MP0,140 ÷ 0,4500,010 ÷ 0,240

Fig.3

Installation

To ensure proper operation and optimal performance, the following points should be observed while installing Dival 700 series pressure regulator: Filtering: the gas flowing in the piping shall be adequately filtered. It is also recommended that the piping upstream from the regulator is clean without impurities.

Assembly positions

Fig.4

Possible installation schemes

Fig.5

M

DIVAL SERIES 700 + LA/...

BURNER GAS TRAIN


DIVAL SERIES 700 + LA/... + Dival 700 Fig.7

Possible installation schemes

DILOCK + DIVAL SERIES 700 + LA/...

Fig.6

Fig.8

DILOCK + DIVAL SERIES 700

Dival Series 700

D

AD

N

DN

M

S

BE

B1

N

Overal dimensions in mm

Face to face dimensions S according to EN 334 and IEC 534-3

Weights in Kgf

E215215215215215

B1433433433433433

B343343343343343

A145145145158158

S183183223254254

DN25x2532x3240x4050x50

Rp 2"x2"

TipeDival 700Dival 700Dival 700Dival 700Dival 700

NRp1/4"

Rp1/4"

Rp1/4"

Rp1/4"

Rp1/4"

MRp1/2"

Rp1/2"

Rp1/2"

Rp1/2"

Rp1/2"

D280280280280280

Dival with slam-shut LA/...1616182119

Dival1515172018

TipeDival 700Dival 700Dival 700Dival 700Dival 700

B

TR Head only

DN25x2532x3240x4050x50

Rp 2"x2"

Pietro Fiorentini S.p.A.via E.Fermi 8/10I-36057 Arcugnano (VI)Italy

Tel. +39 0444 968.511Fax. +39 0444 960.468

www.fiorentini.com

via Rosellini 1I-20124 MilanoItaly

Tel. +39 02 696.14.21Fax. +39 02 688.04.57

CT-s541-E June 2008

The data are not binding. We reserve the right to make eventual cheanges without prior notice.

Documents

Pressure Regulators - Unigaz · >Pressure regulators Introduction DIVAL 700 series pressure regulators are direct acting devices for low and medium pressure applications controlled