Pressure Regulator 133 / 233 - Peppas Ltdpeppasltd.gr/PDF_Files/Products/PG15_Pressure Regulators, Safety... · Pressure Regulator 133 / 233 Benefits ... Type 133 DN 25, PN 16 ANSI

1

Pressure Regulator133 / 233

Benefits■ Accurate regulation■ Exchangeable component

technique■ Easy maintenance■ Suitable for HTB

requirements■ DVGW-approval (DIN 3380/81,

VP 200).

DescriptionThe 133/233 regulator is adirect-acting, spring loadedregulator with an integratedsafety shut-off device.

The lever system ensures exactoutlet pressure, and fastresponse when the flow ratevaries.

ApplicationsThey are designed forresidential and industrial use,such as industries, and heatingplants, as well as for allinstallations where accuratepressure control, easyadjustment and fast responsetimes are required, such as forburners, industrial ovens,boilers, etc.

Pressure Regulator 133 / 233

Technical features■ Inlet pressure range Pi: 0.05 – 8.0 bar■ Outlet pressure range Po: 10 mbar – 0,7 bar■ Accuracy class AC5/10, SG10/20, AG10/5■ Operating temperature -20°C to +60°C ■ Ambient Temperature -30°C to +60°C ■ Acceptable gases Natural gas, propane, butane, air,

nitrogen and all non-corrosive gases.■ Safety devices Optional built-in safety shut-off valve:

OPSO: Over-pressure shut-off (SSV-I, 033) UPSO: Under-pressure shut-off (SSV-II)

■ Options Safety diaphragmSafety Relief valve

Connections■ Sizes DN 25, DN 40 and DN 50 ■ Dimensions see table page 6■ Flanges PN16 DIN, ANSI 150■ Thread G 3/4, G 1, G1 1/2

Body GGG 40, DIN 1693Actuator GD-Al Si 12, DIN 1725Body SSV BrassInternal parts Brass/Steel, zinc protected Seals NBR rubber/Viton Diaphragm NBR rubber/NBR rubber, reinforced fabric

Construction

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The 133/233 regulators aredirect-acting, spring loadedregulators, which can be used for allnon-aggressive gases. The requiredoutlet pressure can be easily set toanother command range byadjusting the command variable, orby exchanging the spring. Due totheir spring principle, theseregulators operate independently oftheir positions. They offer variousinstallation possibilities as a resultof flange connections between theactuator body and the regulatingunit and, flange connectionsbetween the actuator body and theSSV switching device. The nozzle,regulating unit, and SSV switchingdevice, can be exchanged withoutremoving the actuator body from theregulated member.

The safety shut-off valve is equippedwith a thermally working element.

All models with a leaking gasblow-off valve (SRV) have a fixedblow-off pressure1).

The blow-off pressure is,independently of the setting of theoutlet pressure, approximately30 mbar above Pa.A ventilation/blow-off line has to beconnected to the ventilationconnection of the regulator. Themodels with safety diaphragms arenot equipped with the SBV and theventilation/blow-off line. If theworking diaphragm is damaged, thesafety diaphragm prevents gas fromleaking in unacceptable amounts.

1) See accuracy class SRV page 8

diaphragm compartment

feeler (1)(diaphragm)

ventilationconnection

desired-value setting

loaded spring

loaded spring (10)

flange connection

flange connection

actuator body

actuator (4,7)(exchangeable nozzles)valve disk measuring unit

with lever system (34)

valve rodreset with cap(26,35)

SSV withthermal shutoffclosing spring (14)

lever system (3)with actuatorregulating unit body

design withleaking-gas blow-off valve SRV

(8)(6)

(5)

ventilation connectionwith sieve

design withintegrated safetydiaphragm

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Technical Data and Type Designation

Type 133, Pi 0.05 - 4.0 bar■ Pressure rate Inlet pressure■ PN 1 0.05 - 1.0 bar■ PN 4 0.35 - 4.0 bar■ Outlet pressure 8 - 420 mbar■ Flow rate, up to 65 m3/h Natural gas■ Working temperature -20° bis +60°C■ Connection / Size see page 5

Type 233, Pi 0.05 - 4.0 bar■ Pressure rate Inlet pressure■ PN 1 0.05 - 1.0 bar■ PN 4 0.37 - 4.0 bar■ Outlet pressure 8 - 700 mbar■ Flow rate, up to 400 m3/h Natural gas ■ Working temperature -20° bis +60°C■ Connection / Size see page 5

Type 133, Pi > 4.0 - 6.0 bar ■ Pressure rate Inlet pressure ■ PN 6 0.35 - 6.0 bar■ Max. orifice-Ø 3/16” (4.7mm)■ Outlet pressure 20 - 420 mbar■ Flow rate, up to 65 m3/h Natural gas ■ Working temperature -20° bis +60°C ■ External impulse■ Connection / Size see page 5

Designation of regulator 133 and 2331

for Pe 0.1 - 4.02 barapproved according VP 200,DIN 3380 / 81 with DVGW-Reg. No.,with “t” (HTB):- 31 without safety devices - 32 with SRV- 61 SSV Pso ≥ 400 mbar- 62 SSV Pso ≥ 400 mbar and SRV- 64 SSV Pso and Psu- 66 SSV Pso and Psu and SRV- 71 SSV Pso ≤ 450 mbar- 72 SSV Pso ≤ 450 mbar and SRV- 77 SSV Pso ≤ 450 mbar, SRV and

gas loss protection, PN 1 (only 133) - 630 SSV Pso ≥ 400 mbar and safety

diaphragm, PN 1(133 and 233-8”/-12”)

- 650 SSV Pso and Psu, as well assafety diaphragm, PN 1(133 and 233-8”/-12”)

- 730 SSV Pso ≤ 450 mbar and safetydiaphragm, PN 1(133 and 233-8”/-12”)

- 770 SSV Pso ≤ 450 mbar, gas lossprotection and safety diaphragm,PN 1 (only regulator 133)

(1) select the diaphragm housing -8" or -12"(2) note the max. orifice-Ø

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Type 233, Pi > 4.0 - 6.0 bar■ Pressure rate Inlet pressure ■ PN 6 0.35 - 6.0 bar■ Max. orifice-Ø 3/8” (10mm)■ Outlet pressure 20 - 700 mbar■ Flow rate, up to 400 m3/h Natural gas ■ Working temperature -20° bis +60°C ■ External impulse■ Connection / Size see page 5


for Pe >4.0 - 6.02 barapproved according DIN 3380 / 81with DVGW-Reg. No., without “t”:- 32 with SRV- 66 SSV pso and psu, as well as SRV

(1) select the diaphragm housing -8" or -12"(2) note the max. orifice-Ø


for Pi up to 8.02 bar without DVGW-Reg N°.- 31 without safety devices- 32 with SRV- 34 with gas loss protection- 36 with gas loss protection

and SRV- 61 SSV Pso- 62 SSV Pso and SRV- 64 SSV Pso and Psu- 66 SSV Pso and Psu and SRV

Type DesignationExample:Regulator type 233, pressure stagePN 4, 12” diaphragm housing, SSV

for upper shut off ≤ 450 mbar, withsafety relief valve (SRV):

(1) no digit for pressure rate PN 1(2) no diaphragm housing size

for type 133(3) Type 133 single pipe marked 133-E

Type 233 – 12 – 4 – 72

Type3

Diaphragm housing2

Pressure rate1

Safety shut-off valve (see table)

Body GGG 40, DIN 1693Diaphragm housing GD-Al Si 12 DIN 1725SSV-Body Brass, hot pressedOrifice BrassDiaphragm NBR/NBR reinforcedO-rings NBR/VitonValve disk regulator Aluminium/NBRValve disk SSV Brass/NBR

Construction

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Pressure Regulator133 / 233 Regulator variants

InstallationPlease indicate desired installatingposition when you order. If nototherwise stated, the regulators areassembled and adjusted for normal

installation (position 2):Regulator 133-vent pointing outward,Regulator 233-vent pointing inward.

Type 133 DN 25, PN 16ANSI 150

Female thread

Male thread

DN 25, PN 16

G 3/4”, G1”3/4”-, 1”-NPT3/4”-, 1”-BSPT

G1 1/2”(140 mmlength)

G1 1/2”(160 mmlength)

DN 50, PN 16ANSI 150

DN 40, PN 16ANSI 150

Female threadG1 1/2”, 1 1/2” NPT1 1/2”-BSPT

SSV

DN 25, 133-E

SSV

Type 233-12

Type 233-8

Pos. 1

Pos. 2 Pos. 4* Pos. 6

Pos. 7 Pos. 8 Pos. 9 Pos. 10

Pos. 3* Pos. 5Regulator 233-ventpointing outward

Regulator 233-ventpointing outward

*) Pos. 3 and 4: Not to use for 233-8 (-12) -71/ -72/ -730

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Dimension, Type 133-ER L N

Rp 1 110 41Rp 1-1/2” 140 50


Dimensions

Model Thread Flange A B C’ C D E F G H J K Weight in kgType Size Ventilation (approx.)

(1) (2) Connection (1) (2)133- 3/4“/1” DN 25 190 155 100 160 170 100 100 75 120 Rp 3/4 74 4 6233-12 1 1/2“ DN 40 350 250 150 200 265 155 115 75 120 Rp 1 110 11 15233-12 - DN 50 350 250 - 200 265 155 115 75 120 Rp 1 110 - 16233-8 1 1/2“ DN 40 260 250 150 200 220 125 115 75 120 Rp 1 105 9 13233-8 - DN 50 260 250 - 200 220 125 115 75 120 Rp 1 105 - 14

J

J

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Command and adjustable range

Command ranges for Pressure SpringsRegulator Type Command range Part No. Colour marking

9 – 15 mbar 955-200-08 red133 14 – 20 mbar 955-200-09 blue

with gas loss 18 – 26 mbar 955-201-06 silverprotection 24 – 40 mbar 955-202-98 yellow

38 – 53 mbar 955-200-11 orange8 – 16 mbar 955-200-08 red12 – 20 mbar 955-200-09 blue15 – 35 mbar 955-200-10 green

13330 – 70 mbar 955-200-11 orange50 – 140 mbar 955-200-12 black-white100 – 210 mbar 955-200-83 silver

133 HP 140 – 420 mbar 955-200-84 black8 – 16 mbar 955-200-13 red12 – 20 mbar 955-200-14 blue15 – 35 mbar 955-200-15 green

233-1230 – 70 mbar 955-200-16 orange70 – 140 mbar 955-200-17 black100 – 210 mbar 955-200-18 metal blank30 – 70 mbar 955-200-15 green70 – 140 mbar 955-200-16 orange

233-8140 – 300 mbar 955-200-17 black210 – 450 mbar 955-200-18 metal blank420 – 700 mbar 955-200-69 silver

233-8 HP955-200-18 metal blank

Adjustable ranges for SSV, Type 033 for upper shut-offShut-off Adjustable range Part No. Colour markingUpper 40 – 70 mbar 955-200-22 red

(overpressure) 50 – 150 mbar 955-200-23 bluePso 140 – 450 mbar 955-200-24 green

Adjustable ranges SSV -I,-II for upper and lower shut-offShut-off Adjustable range Part No. Colour markingUpper 20 – 60 mbar 955-200-22 red

(overpressure) 50 – 120 mbar 955-200-23 blue100 – 400 mbar 955-200-24 green

Pso 300 – 600 mbar 955-200-52 brown400 – 1000 mbar 955-202-42 silver

Lower 8 – 50 mbar 955-200-32 red(underpressure) Psu

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Accuracy class and closing groupregulator (AC, SG):Outlet pressure po:8 mbar - 20 mbar:AC 20 / SG 30>20 mbar - 50 mbar:AC 10 / SG 20> 50 mbar - 420 mbar:AC 5 / SG 10

Response closing group SSV:Upper response pressure Pso,40 –1000 mbar:AG 10Lower response pressure Psu,8 – 20 mbar:AG 30>20 – 50 mbar:AG 10

Accuracy class SRV:(Po + approx. 30 mbar) ± 10%

Pressure difference minimal,between outlet pressure Po and SSV shut-off:SSV 033: 20 mbar between Po and PsoSSV II, lower: 14 mbar between Po and PsuSSV II, upper: 20 mbar between Po and Pso

Ventilation:Gas pressure regulators without asafety diaphragm, and gas pressureregulators with an integrated safetyreliev valve (SRV), requireventilation and blow-off linesrespectively.The minimum diameters stipulatedby the DIN 3380 standards are DN 15.In order to ensure disturbance-freeregulation and a sufficiently quickresponse for load changes, thefollowing nominal widths andinstallation lengths have to beobserved:up to 3 m ventilation line: DN 20up to 5 m ventilation line: DN 25For longer lengths, at least DN 40 isrecommended.

Adjustable Data InletOutlet Pressure Pressure Orifice Inserts

Po (mbar) Pi (bar)Spring range / 12.5 mm 10 mm 8 mm 6.3 mm 4.7 mm 3 mm

No. / colour (1/2”) (3/8”) (5/16”) (1/4”) (3/16”) (1/8”)Po = 20 mbar 0.1 16 15 12 11 7 3

Command Range 0.3 27 26 18 14 12 615 – 35 mbar 0.5 32 28 19 17 15 8

955-200-10 green 1.0 38 37 20 20 19 11Po = 50 mbar 0.1 - - - - - -


955-200-11 orange 1.0 29 26 17 16 14 10Po = 100 mbar 0.1 - - - - - -


955-200-12 blk-white 1.0 40 38 23 19 16 10

Regulator Type 133-E, Body DN 25,Pe max 1.0 bar

Flow rate in m3/h natural gas instandard state (ρn = 0.78 kg/m3)

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Adjustable Data InletOutlet Pressure Pressure1 Orifice Inserts


No. / colour (1/2”) (3/8”) (5/16”) (1/4”) (3/16”) (1/8”)0.1 24 17 16 9 - -0.3 40 36 29 22 13 6

Po = 20 mbar 0.5 48 46 40 30 17 8Command Range 1.0 61 56 53 41 25 12

15 – 35 mbar 1.5 - 63 61 56 33 14Pressure Spring 2.0 - 64 63 57 38 18

955-200-10 3.0 - - - 59 51 24green 4.0 - - - 64 52 31

5.0 - - - - 53 356.0 - - - - 54 408.0 - - - - 60 500.1 14 13 11 - - -0.3 31 29 22 16 12 4



955-200-11 3.0 - - - 60 48 22orange 4.0 - - - 65 53 27

5.0 - - - - 54 306.0 - - - - 56 368.0 - - - - 66 500.2 22 18 14 12 8 30.3 33 28 18 16 11 4



955-200-12 3.0 - - - 60 48 21black-white 4.0 - - - 63 52 25

5.0 - - - - 60 316.0 - - - - 65 358.0 - - - - 70 50

(1) With Pi > 4.0 bar, external impulse is required.(2) The volumes below the lines are not regulated with the accuracy indicated.


Adjustable DataOutlet Pressure Inlet

Po (mbar) PressureOrifice

Spring range / Pi (bar)∅ 12.5 mm

No. / colourPo = 20 mbar 0.1 13

Command Range 0.3 2018 – 26 mbar 0.5 25955-2001-06 1.0 32

Po = 50 mbar 0.15 14Command Range 0.3 22

38 – 53 mbar 0.5 27955-200-11 1.0 34

Regulator Type 133-77 and -770(with gas loss protection),Body DN 25, Pe max 1.0 barFlow rate in m3/h natural gas instandard state (ρn = 0.78 kg/m3)

Regulator Type 133,Actuator Body DN 25

Flow rate in m3/h natural gas instandard state (ρn = 0.78 kg/m3)(see footnotes 1. and 2.)

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Adjustable Data InletOutlet Pressure Pressure1 Orifice Inserts


No. / colour (1/2”) (3/8”) (5/16”) (1/4”) (3/16”) (1/8”)0.1 - - - - - -0.3 18 15 12 10 7 3

Po = 140 mbar 0.5 25 21 17 14 10 6Command Range 1.0 44 36 29 22 17 10100 – 210 mbar 1.5 - 46 38 28 24 13

Pressure Spring 2.0 - 53 43 35 29 16955-200-83 3.0 - - 56 47 39 22

silver 4.0 - - - 59 49 265.0 - - - - 55 316.0 - - - - 65 358.0 - - - - 79 460.5 18 15 11 8 6 -1.0 35 29 23 16 13 9

Po = 300 mbar 1.5 - 38 33 25 18 12Command Range 2.0 - 46 40 33 25 15140 – 420 mbar 3.0 - - 53 43 38 21

Pressure Spring 4.0 - - 66 51 46 26955-200-84 5.0 - - - - 55 31

black 6.0 - - - - 65 358.0 - - - - 79 420.7 26 22 17 12 10 61.0 33 28 21 17 12 8

Po = 400 mbar 1.5 - 37 31 26 16 10Command Range 2.0 - 44 38 31 23 12140 – 420 mbar 3.0 - - 50 41 36 18

Pressure Spring 4.0 - - 64 49 44 24955-200-84 5.0 - - - - 53 29

black 6.0 - - - - 63 338.0 - - - - 77 40


Regulator Type 133,Actuator Body DN 25


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Adjustable Data InletOutlet Pressure Pressure1 Orifice Inserts / Valve Disk Angle

Po (mbar) Pi (bar)Spring range / 25 mm (1”) 20 mm (3/4”) 12.5 mm (1/2”) 10 mm (3/8”) 6.3 mm (1/4”)

No. / colour 30° 10° 10° 10° 10°0.1 75 58 40 24 120.3 142 114 82 48 230.5 188 149 110 64 32

Po = 20 mbar 1.0 250 208 158 98 47Command Range 1.5 280 241 195 125 57

15 – 35 mbar 2.0 - 260 215 147 68Pressure Spring 3.0 - 300 266 190 92

955-200-15 4.0 - 310 300 210 113green 5.0 - - 300 230 120

6.0 - - 300 250 1308.0 - - - 250 1600.1 51 43 26 20 -0.3 125 95 62 43 210.5 169 130 88 58 29


30 – 70 mbar 2.0 - 254 210 140 68Pressure Spring 3.0 - 295 250 190 90

955-200-16 4.0 - 315 280 220 110orange 5.0 - - 300 230 122

6.0 - - 300 250 1308.0 - - - 250 1600.2 73 52 38 25 150.3 110 81 54 36 200.5 160 119 79 53 30


70– 140 mbar 2.0 - 258 204 142 65Pressure Spring 3.0 - 290 248 191 87

955-200-17 4.0 - 319 277 230 109black 5.0 - - 300 240 124

6.0 - - 300 250 1308.0 - - - 250 1600.4 140 107 70 45 220.5 175 134 90 56 27


100– 210 mbar 2.0 - 291 230 142 64Pressure Spring 3.0 - 350 287 190 86

955-200-18 4.0 - 376 310 230 110silver 5.0 - - 320 250 125

6.0 - - 330 260 1308.0 - - - 260 160


Regulator Type 233-12,Actuator Body DN 40

Flow rate in m3/h natural gas instandard state (ρn = 0.78 kg/m3

(see footnotes 1. and 2.)

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Po (mbar) Pi (bar)Spring range / 25 mm (1”) 20 mm (3/4”) 12.5 mm (1/2”) 10 mm (3/8”) 6.3 mm (1/4”)

No. / colour 30° 10° 10° 10° 10°0.2 75 56 30 19 140.3 105 78 47 30 180.5 142 115 68 46 26


30 – 70 mbar 2.0 - 255 200 147 68Pressure Spring 3.0 - - 243 190 90

955-200-15 4.0 - - 278 232 112green 5.0 - - 293 254 126

6.0 - - 304 270 1388.0 - - - - 1700.3 93 73 41 26 180.5 136 106 65 42 26


70 – 140 mbar 2.0 - 236 180 126 66Pressure Spring 3.0 - - 231 186 87

955-200-16 4.0 - - 263 225 109orange 5.0 - - 285 248 128

6.0 - - 300 275 1468.0 - - - - 1780.4 124 96 63 42 230.5 148 118 79 52 27


140– 300 mbar 2.0 - 296 190 143 70Pressure Spring 3.0 - - 266 197 89

955-200-17 4.0 - - 300 240 112black 5.0 - - 312 256 131

6.0 - - 324 279 1468.0 - - - - 1780.7 152 126 86 61 32


210– 450 mbar 2.0 - 256 172 130 66Pressure Spring 3.0 - - 223 167 86

955-200-18 4.0 - - 241 176 108silver 5.0 - - 266 206 127

6.0 - - 281 217 1428.0 - - - - 172




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Po (mbar) Pi (bar)Spring range / 25 mm (1”) 20 mm (3/4”) 20 mm (3/4”) 12.5 mm (1/2”) 10 mm (3/8”) 6.3 mm (1/4”)

No. / colour 30° 30° 10° 10° 10° 10°0.1 97 74 66 41 25 120.3 214 180 142 79 50 230.5 288 250 187 119 69 30


15 – 35 mbar 2.0 - 410 317 255 153 68Pressure Spring 3.0 - - 362 324 205 86

955-200-15 4.0 - - 394 340 240 105green 5.0 - - - 350 264 118

6.0 - - - 362 288 1308.0 - - - - 305 1500.1 66 52 45 31 20 -0.3 165 130 110 65 43 220.5 245 200 157 97 60 29


30 – 70 mbar 2.0 - 410 317 255 152 66Pressure Spring 3.0 - - 365 312 205 89

955-200-16 4.0 - - 394 340 240 110orange 5.0 - - - 350 264 123

6.0 - - - 362 288 1408.0 - - - - 305 1600.2 95 65 60 40 30 140.3 160 117 105 65 44 210.5 241 178 155 97 62 29


70– 140 mbar 2.0 - 410 376 255 153 69Pressure Spring 3.0 - - 420 320 205 91

955-200-17 4.0 - - 430 375 240 110black 5.0 - - - 390 270 125

6.0 - - - 405 300 1408.0 - - - - 310 1600.4 165 125 110 70 45 250.5 204 150 133 83 55 30


100– 210 mbar 2.0 - 360 305 230 152 71Pressure Spring 3.0 - - 360 300 205 91

955-200-18 4.0 - - 400 320 240 110silver 5.0 - - - 330 265 125

6.0 - - - 350 300 1408.0 - - - - 310 160




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Po (mbar) Pi (bar)Spring range / 25 mm (1”) 20 mm (3/4”) 20 mm (3/4”) 12.5 mm (1/2”) 10 mm (3/8”) 6.3 mm (1/4”)

No. / colour 30° 30° 10° 10° 10° 10°0.2 75 60 48 34 22 140.3 122 83 71 52 33 200.5 187 148 117 74 49 28


30 – 70 mbar 2.0 - 370 270 231 155 66Pressure Spring 3.0 - - - 300 208 94

955-200-15 4.0 - - - 340 236 117green 5.0 - - - 349 259 130

6.0 - - - 358 281 1418.0 - - - - - 1680.3 94 78 75 45 28 200.5 137 116 108 70 42 28


70 – 140 mbar 2.0 - 401 270 208 134 66Pressure Spring 3.0 - - - 281 189 92

955-200-16 4.0 - - - 317 237 113orange 5.0 - - - 340 251 131

6.0 - - - 356 270 1468.0 - - - - - 1720.4 115 95 88 55 38 220.5 154 120 116 69 48 27


140– 300 mbar 2.0 - 414 296 228 147 69Pressure Spring 3.0 - - - 304 199 95

955-200-17 4.0 - - - 350 231 117black 5.0 - - - 378 262 139

6.0 - - - 392 284 1508.0 - - - - - 1810.7 160 123 110 81 62 29


210– 450 mbar 2.0 - 274 231 170 128 66Pressure Spring 3.0 - - - 226 167 91

955-200-18 4.0 - - - 252 200 112silver 5.0 - - - 278 232 133

6.0 - - - 295 255 1508.0 - - - - - 183


Regulator Type 233-8, Actuator Body DN 50

Flow rate in m3/h natural gas instandard state (ρn = 0.78 kg/m3

(see footnotes 1. and 2.)

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feeler (1)(diaphragm)

ventilation connection

diaphragm compartment

design withleaking-gas SBV

desired-value setting

loaded spring (2)

lever system (3)with actuatorregulating unit body

flange connection

closing spring (14)

flange connection

actuator body

actuator (4,7)(exchangeable nozzles)valve disk

loaded spring (10)

valve rod resetwith cap (26,35)

measuring unit withlever system (34)

(8)(6)

(5)

Operating PrincipleThe function of a regulator is to keepthe outlet pressure constant,independently of the inlet pressureand the gas flow. At zero consumption(Q = 0), they close tightly. Thecomparator (1) is loaded with a spring(2) and transmits its movement to theactuator (4) by means of a leversystem (3). The desired values areachieved by the respective commandvariable (spring load). The venturieffect, which is achieved by thedesign of the body, outlet section (5)and connection channel (6) to thecomparator (1), overcomes the springcharacteristics and generates a slightincrease in the outlet pressure at anincreasing flow. Without gas flowing,the regulator is open, i.e., the setcommand value (spring force) pressesthe comparator (1) as well as thelever system (3) downwards; theactuator opens and gas flows throughthe orifice (7). As a result, an outletpressure can develop and generate aforce at the comparator (1), whichcounteracts the set command value.

If this force exceeds the commandvalue, the rods (3) are lifted by thecomparator (1), and the valve disk (4)starts to narrow the clearance area atthe orifice (7) thereby throttling thegas flow. If the outlet pressure fallsdue to the sinking gas volume behindthe orifice (7) and, hence, in thediaphragm compartment (8), theactuator (4) is opened by thedominating spring force. Thischanging process is repeated until abalance between the command valueand the outlet pressure on thecomparator (1) depending on the gasflow, is achieved. If the actuator (4.7)is damaged, or if the rods (3) areblocked, the pressure in theregulating unit, and behind theactuator (4.7) can only increase untilthe integrated SSV responds andinterrupts the gas flow.

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For further information, please contact your local Schlumberger representative.

16


with upperswitching pointPso ≥ 400 mbar

6 5 13

9

10

12

33

32

with lowerand upperswitching points

9

28

30

10

14

34 36 11 26 35limit of lift forupper shutoff

743113614

12

34

Over-pressure functionWhen the outlet pressure of a gaspressure regulator reaches aninadmissible value, the increasedpressure is also transmitted throughthe pulse bore (13) to the comparator(9) of the SSV.When the force below the comparator(9) reaches the force of the loadspring (10) against over-pressure, thecomparator (9) with the lever system(11) (for SSV with upper switchingpoint) and with the guide bush (28)(for SSV with upper and lowerswitching points) is pushed upwards.The lever system (11) is released sothat the force of the closing spring(14) is set free, and the valve disk (12)is pushed against the orifice (7).

Under-pressure functionWhen the outlet pressure of theregulator falls to such a degree thatthe force below the comparator (9)becomes smaller than the force of thespring for under-pressure (30), theload spring (30) pushes thecomparator downwards.

(Against over-pressure (10), the loadspring is mounted with the guide bush(28) at the retention shoulder (32)).The lever system is released so thatthe force of the closing spring (14) isalso released and the valve disk (12)is pushed against the orifice.

CommissioningThe SSV is commissioned by pullingout the valve rod (26) and engagingthe lever system (11). However, theSSV with upper and lower shut-offrequire that the pressure below thecomparator (9) lies above the lowerswitching pressure against under-pressure, and below the switchingpressure against over-pressure, sothat the lever (11) touches the arm(33) of the rocking lever (34).

The cap (35) and the valve rod (26)are equipped with threads.Consequently, a slight resetting of thevalve rod is possible.

Documents

Pressure Regulator 133 / 233 - Peppas Ltdpeppasltd.gr/PDF_Files/Products/PG15_Pressure Regulators, Safety... · Pressure Regulator 133 / 233 Benefits ... Type 133 DN 25, PN 16 ANSI