Pressure Regulator 133 / 233 - Peppas Ltd Combustion - energy ...

Pressure Regulator 

133 / 233 

Benefits 

■ Accurate regulation 

■ Exchangeable component 

technique 

■ Easy maintenance 

■ Suitable for HTB 

requirements 

■ DVGW-approval (DIN 3380/81, 

VP 200). 

Description 

The 133/233 regulator is a 

direct-acting, spring loaded 

regulator with an integrated 

safety shut-off device. 

The lever system ensures exact 

outlet pressure, and fast 

response when the flow rate 

varies. 

Applications 

They are designed for 

residential and industrial use, 

such as industries, and heating 

plants, as well as for all 

installations where accurate 

pressure control, easy 

adjustment and fast response 

times are required, such as for 

burners, industrial ovens, 

boilers, etc. 

Pressure Regulator 133 / 233 

Technical features 

■ Inlet pressure range 

■ Outlet pressure range 

■ Accuracy class 

■ Operating temperature 

■ Ambient Temperature 

■ Acceptable gases 

■ Safety devices 

■ Options 

Pi: 0.05 – 8.0 bar 

Po: 10 mbar – 0,7 bar 

AC5/10, SG10/20, AG10/5 

-20°C to +60°C 

-30°C to +60°C 

Natural gas, propane, butane, air, 

nitrogen and all non-corrosive gases. 

Optional built-in safety shut-off valve: 

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

UPSO: Under-pressure shut-off (SSV-II) 

Safety diaphragm 

Safety 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 

Construction 

Body GGG 40, DIN 1693 

Actuator GD-Al Si 12, DIN 1725 

Body SSV 

Brass 

Internal parts 

Brass/Steel, zinc protected 

Seals 

NBR rubber/Viton 

Diaphragm 

NBR rubber/NBR rubber, reinforced fabric 

1



The 133/233 regulators are 

direct-acting, spring loaded 

regulators, which can be used for all 

non-aggressive gases. The required 

outlet pressure can be easily set to 

another command range by 

adjusting the command variable, or 

by exchanging the spring. Due to 

their spring principle, these 

regulators operate independently of 

their positions. They offer various 

installation possibilities as a result 

of flange connections between the 

actuator body and the regulating 

unit and, flange connections 

between the actuator body and the 

SSV switching device. The nozzle, 

regulating unit, and SSV switching 

device, can be exchanged without 

removing the actuator body from the 

regulated member. 

The safety shut-off valve is equipped 

with a thermally working element. 

All models with a leaking gas 

blow-off valve (SRV) have a fixed 

blow-off pressure 1 ). 

The blow-off pressure is, 

independently of the setting of the 

outlet pressure, approximately 

30 mbar above Pa. 

A ventilation/blow-off line has to be 

connected to the ventilation 

connection of the regulator. The 

models with safety diaphragms are 

not equipped with the SBV and the 

ventilation/blow-off line. If the 

working diaphragm is damaged, the 

safety diaphragm prevents gas from 

leaking in unacceptable amounts. 

1) See accuracy class SRV page 8 

ventilation connection 

with sieve 

design with 

integrated safety 

diaphragm 

feeler (1) 

(diaphragm) 

ventilation 

connection 

desired-value setting 

loaded spring 

flange connection 

actuator body 

actuator (4,7) 

(exchangeable nozzles) 

valve disk 

loaded spring (10) 

measuring unit 

with lever system (34) 

(5) 

valve rod 

reset with cap 

(26,35) 

design with 

leaking-gas 

blow-off valve SRV 

(8) 

(6) 

diaphragm compartment 

regulating unit body 

lever system (3) 

with actuator 

closing spring (14) 

SSV with 

thermal shutoff 


2



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 m 3 /h Natural gas 

■ Working temperature -20° bis +60°C 

■ Connection / Size see page 5 

Type 233, Pi 0.05 - 4.0 bar 



■ PN 1 

0.05 - 1.0 bar 

■ PN 4 

0.37 - 4.0 bar 


8 - 700 mbar 





Designation of regulator 133 and 233 1 

for Pe 0.1 - 4.0 2 bar 

approved 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 as 

safety diaphragm, PN 1 


- 730 SSV Pso ≤ 450 mbar and safety 

diaphragm, PN 1 


- 770 SSV Pso ≤ 450 mbar, gas loss 

protection and safety diaphragm, 

PN 1 (only regulator 133) 

(1) select the diaphragm housing -8" or -12" 

(2) note the max. orifice-Ø 

Type 133, Pi > 4.0 - 6.0 bar 



■ PN 6 

0.35 - 6.0 bar 

■ Max. orifice-Ø 

3/16” (4.7mm) 


20 - 420 mbar 




■ External impulse 


3



Type 233, Pi > 4.0 - 6.0 bar 



■ PN 6 

0.35 - 6.0 bar 

■ Max. orifice-Ø 

3/8” (10mm) 


20 - 700 mbar 




■ External impulse 



for Pe >4.0 - 6.0 2 bar 

approved according DIN 3380 / 81 

with 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 8.0 2 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 Designation 

Example: 

Regulator type 233, pressure stage 

PN 4, 12” diaphragm housing, SSV 

for upper shut off ≤ 450 mbar, with 

safety relief valve (SRV): 

Type 233 – 12 – 4 – 72 

Type 3 

Diaphragm housing 2 

Pressure rate 1 

Safety shut-off valve (see table) 

(1) no digit for pressure rate PN 1 

(2) no diaphragm housing size 

for type 133 

(3) Type 133 single pipe marked 133-E 

Construction 

Body GGG 40, DIN 1693 

Diaphragm housing GD-Al Si 12 DIN 1725 

SSV-Body 

Brass, hot pressed 

Orifice 

Brass 

Diaphragm 

NBR/NBR reinforced 

O-rings 

NBR/Viton 

Valve disk regulator 

Aluminium/NBR 

Valve disk SSV 

Brass/NBR 

4


133 / 233 Regulator variants 

Type 133 DN 25, PN 16 

ANSI 150 

Female 

thread 

Male 

thread 

DN 25, 

PN 16 

DN 25, 

133-E 

SSV 

Type 233-12 

G 3/4”, G1” 

3/4”-, 1”-NPT 

3/4”-, 1”-BSPT 

G1 1/2” 

(140 mm 

length) 

G1 1/2” 

(160 mm 

length) 

Type 233-8 

DN 50, PN 16 

ANSI 150 

DN 40, PN 16 

ANSI 150 

Female thread 

G1 1/2”, 1 1/2” NPT 

1 1/2”-BSPT 

SSV 

Installation 

Please indicate desired installating 

position when you order. If not 

otherwise stated, the regulators are 

assembled and adjusted for normal 

installation (position 2): 

Regulator 133-vent pointing outward, 

Regulator 233-vent pointing inward. 

Pos. 1 

Pos. 3* Regulator 233-vent Pos. 5 

pointing outward 

Pos. 2 Pos. 4* Regulator 233-vent Pos. 6 

pointing outward 

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

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

5



Dimensions 

J 

Model Thread Flange A B C’ C D E F G H J K Weight in kg 

Type 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 6 

233-12 1 1/2“ DN 40 350 250 150 200 265 155 115 75 120 Rp 1 110 11 15 

233-12 - DN 50 350 250 - 200 265 155 115 75 120 Rp 1 110 - 16 

233-8 1 1/2“ DN 40 260 250 150 200 220 125 115 75 120 Rp 1 105 9 13 

233-8 - DN 50 260 250 - 200 220 125 115 75 120 Rp 1 105 - 14 

J 

Dimension, Type 133-E 

R L N 

Rp 1 110 41 

Rp 1-1/2” 140 50 

6



Command and adjustable range 

Command ranges for Pressure Springs 

Regulator Type Command range Part No. Colour marking 

9 – 15 mbar 955-200-08 red 

133 14 – 20 mbar 955-200-09 blue 

with gas loss 18 – 26 mbar 955-201-06 silver 

protection 24 – 40 mbar 955-202-98 yellow 

38 – 53 mbar 955-200-11 orange 

8 – 16 mbar 955-200-08 red 

12 – 20 mbar 955-200-09 blue 

133 

15 – 35 mbar 955-200-10 green 

30 – 70 mbar 955-200-11 orange 

50 – 140 mbar 955-200-12 black-white 

100 – 210 mbar 955-200-83 silver 

133 HP 140 – 420 mbar 955-200-84 black 

8 – 16 mbar 955-200-13 red 

12 – 20 mbar 955-200-14 blue 

233-12 

15 – 35 mbar 955-200-15 green 

30 – 70 mbar 955-200-16 orange 

70 – 140 mbar 955-200-17 black 

100 – 210 mbar 955-200-18 metal blank 

30 – 70 mbar 955-200-15 green 

233-8 

70 – 140 mbar 955-200-16 orange 

140 – 300 mbar 955-200-17 black 

210 – 450 mbar 955-200-18 metal blank 

233-8 HP 

420 – 700 mbar 955-200-69 silver 

955-200-18 metal blank 

Adjustable ranges for SSV, Type 033 for upper shut-off 

Shut-off Adjustable range Part No. Colour marking 

Upper 40 – 70 mbar 955-200-22 red 

(overpressure) 50 – 150 mbar 955-200-23 blue 

Pso 140 – 450 mbar 955-200-24 green 

Adjustable ranges SSV -I,-II for upper and lower shut-off 

Shut-off Adjustable range Part No. Colour marking 

Upper 20 – 60 mbar 955-200-22 red 

(overpressure) 50 – 120 mbar 955-200-23 blue 

100 – 400 mbar 955-200-24 green 

Pso 

300 – 600 mbar 955-200-52 brown 

400 – 1000 mbar 955-202-42 silver 

Lower 8 – 50 mbar 955-200-32 red 

(underpressure) Psu 

7



Accuracy class and closing group 

regulator (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 10 

Lower response pressure Psu, 

8 – 20 mbar: 

AG 30 

>20 – 50 mbar: 

AG 10 

Accuracy class SRV: 

(Po + approx. 30 mbar) ± 10% 

Ventilation: 

Gas pressure regulators without a 

safety diaphragm, and gas pressure 

regulators with an integrated safety 

reliev valve (SRV), require 

ventilation and blow-off lines 

respectively. 

The minimum diameters stipulated 

by the DIN 3380 standards are DN 15. 

In order to ensure disturbance-free 

regulation and a sufficiently quick 

response for load changes, the 

following nominal widths and 

installation lengths have to be 

observed: 

up to 3 m ventilation line: DN 20 

up to 5 m ventilation line: DN 25 

For longer lengths, at least DN 40 is 

recommended. 

Pressure difference minimal, 

between 

outlet pressure Po and SSV shut-off: 

SSV 033: 

20 mbar between Po and Pso 

SSV II, lower: 

14 mbar between Po and Psu 

SSV II, upper: 

20 mbar between Po and Pso 

Regulator Type 133-E, Body DN 25, 

Pe max 1.0 bar 

Flow rate in m 3 /h natural gas in 

standard state (ρn = 0.78 kg/m 3 ) 

Adjustable Data 

Inlet 

Outlet 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 6 

15 – 35 mbar 0.5 32 28 19 17 15 8 

955-200-10 green 1.0 38 37 20 20 19 11 

Po = 50 mbar 0.1 - - - - - - 

Command Range 0.3 20 16 12 10 7 5 

30 – 70 mbar 0.5 24 20 14 12 10 6 

955-200-11 orange 1.0 29 26 17 16 14 10 

Po = 100 mbar 0.1 - - - - - - 

Command Range 0.3 21 18 12 10 9 4 

35 – 140 mbar 0.5 28 23 16 12 10 6 

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

8



Regulator Type 133-77 and -770 

(with gas loss protection), 

Body DN 25, Pe max 1.0 bar 




Outlet Pressure Inlet 

Orifice 

Po (mbar) Pressure 

∅ 12.5 mm 

Spring range / Pi (bar) 

No. / colour 

Po = 20 mbar 0.1 13 

Command Range 0.3 20 

18 – 26 mbar 0.5 25 

955-2001-06 1.0 32 

Po = 50 mbar 0.15 14 

Command Range 0.3 22 

38 – 53 mbar 0.5 27 

955-200-11 1.0 34 

Regulator Type 133, 

Actuator Body DN 25 



(see footnotes 1. and 2.) 


Inlet 

Outlet Pressure Pressure 1 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 8 

Command Range 1.0 61 56 53 41 25 12 

15 – 35 mbar 1.5 - 63 61 56 33 14 

Pressure Spring 2.0 - 64 63 57 38 18 

955-200-10 3.0 - - - 59 51 24 

green 4.0 - - - 64 52 31 

5.0 - - - - 53 35 

6.0 - - - - 54 40 

8.0 - - - - 60 50 

0.1 14 13 11 - - - 

0.3 31 29 22 16 12 4 

Po = 50 mbar 0.5 44 42 37 24 15 8 

Command Range 1.0 58 52 46 40 24 11 

30 – 70 mbar 1.5 - 59 57 54 30 14 


955-200-11 3.0 - - - 60 48 22 

orange 4.0 - - - 65 53 27 

5.0 - - - - 54 30 

6.0 - - - - 56 36 

8.0 - - - - 66 50 

0.2 22 18 14 12 8 3 

0.3 33 28 18 16 11 4 

Po = 100 mbar 0.5 50 35 28 24 12 8 

Command Range 1.0 60 52 48 39 23 12 

50 – 140 mbar 1.5 - 58 56 52 29 13 


955-200-12 3.0 - - - 60 48 21 

black-white 4.0 - - - 63 52 25 

5.0 - - - - 60 31 

6.0 - - - - 65 35 

8.0 - - - - 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. 

9



Regulator Type 133, 



Inlet 




Outlet Pressure Pressure 1 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 6 

Command Range 1.0 44 36 29 22 17 10 

100 – 210 mbar 1.5 - 46 38 28 24 13 


955-200-83 3.0 - - 56 47 39 22 

silver 4.0 - - - 59 49 26 

5.0 - - - - 55 31 

6.0 - - - - 65 35 

8.0 - - - - 79 46 

0.5 18 15 11 8 6 - 

1.0 35 29 23 16 13 9 

Po = 300 mbar 1.5 - 38 33 25 18 12 

Command Range 2.0 - 46 40 33 25 15 

140 – 420 mbar 3.0 - - 53 43 38 21 

Pressure Spring 4.0 - - 66 51 46 26 

955-200-84 5.0 - - - - 55 31 

black 6.0 - - - - 65 35 

8.0 - - - - 79 42 

0.7 26 22 17 12 10 6 

1.0 33 28 21 17 12 8 

Po = 400 mbar 1.5 - 37 31 26 16 10 

Command Range 2.0 - 44 38 31 23 12 

140 – 420 mbar 3.0 - - 50 41 36 18 


955-200-84 5.0 - - - - 53 29 

black 6.0 - - - - 63 33 

8.0 - - - - 77 40 



10



Regulator Type 233-12, 



Inlet 


standard state (ρn = 0.78 kg/m 3 


Outlet Pressure Pressure 1 Orifice Inserts / Valve Disk Angle 


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 12 

0.3 142 114 82 48 23 

0.5 188 149 110 64 32 

Po = 20 mbar 1.0 250 208 158 98 47 

Command Range 1.5 280 241 195 125 57 

15 – 35 mbar 2.0 - 260 215 147 68 

Pressure Spring 3.0 - 300 266 190 92 

955-200-15 4.0 - 310 300 210 113 

green 5.0 - - 300 230 120 

6.0 - - 300 250 130 

8.0 - - - 250 160 

0.1 51 43 26 20 - 

0.3 125 95 62 43 21 

0.5 169 130 88 58 29 

Po = 50 mbar 1.0 250 190 140 95 46 

Command Range 1.5 286 228 180 120 57 

30 – 70 mbar 2.0 - 254 210 140 68 


955-200-16 4.0 - 315 280 220 110 

orange 5.0 - - 300 230 122 

6.0 - - 300 250 130 

8.0 - - - 250 160 

0.2 73 52 38 25 15 

0.3 110 81 54 36 20 

0.5 160 119 79 53 30 

Po = 100 mbar 1.0 237 183 136 90 44 

Command Range 1.5 266 221 168 119 57 

70– 140 mbar 2.0 - 258 204 142 65 


955-200-17 4.0 - 319 277 230 109 

black 5.0 - - 300 240 124 

6.0 - - 300 250 130 

8.0 - - - 250 160 

0.4 140 107 70 45 22 

0.5 175 134 90 56 27 

Po = 200 mbar 1.0 304 224 156 98 43 

Command Range 1.5 355 272 207 127 57 

100– 210 mbar 2.0 - 291 230 142 64 


955-200-18 4.0 - 376 310 230 110 

silver 5.0 - - 320 250 125 

6.0 - - 330 260 130 

8.0 - - - 260 160 



11






Inlet 






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 14 

0.3 105 78 47 30 18 

0.5 142 115 68 46 26 

Po = 50 mbar 1.0 235 189 132 90 46 

Command Range 1.5 262 223 166 118 55 

30 – 70 mbar 2.0 - 255 200 147 68 

Pressure Spring 3.0 - - 243 190 90 

955-200-15 4.0 - - 278 232 112 

green 5.0 - - 293 254 126 

6.0 - - 304 270 138 

8.0 - - - - 170 

0.3 93 73 41 26 18 

0.5 136 106 65 42 26 

Po = 100 mbar 1.0 220 170 114 79 41 

Command Range 1.5 261 205 149 102 55 

70 – 140 mbar 2.0 - 236 180 126 66 


955-200-16 4.0 - - 263 225 109 

orange 5.0 - - 285 248 128 

6.0 - - 300 275 146 

8.0 - - - - 178 

0.4 124 96 63 42 23 

0.5 148 118 79 52 27 

Po = 200 mbar 1.0 260 198 127 90 46 

Command Range 1.5 298 252 152 117 58 

140– 300 mbar 2.0 - 296 190 143 70 


955-200-17 4.0 - - 300 240 112 

black 5.0 - - 312 256 131 

6.0 - - 324 279 146 

8.0 - - - - 178 

0.7 152 126 86 61 32 

Po = 400 mbar 1.0 220 175 118 80 46 

Command Range 1.5 277 214 142 107 54 

210– 450 mbar 2.0 - 256 172 130 66 


955-200-18 4.0 - - 241 176 108 

silver 5.0 - - 266 206 127 

6.0 - - 281 217 142 

8.0 - - - - 172 



12






Inlet 






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 12 

0.3 214 180 142 79 50 23 

0.5 288 250 187 119 69 30 

Po = 20 mbar 1.0 385 360 267 182 106 46 

Command Range 1.5 425 400 292 230 128 57 

15 – 35 mbar 2.0 - 410 317 255 153 68 


955-200-15 4.0 - - 394 340 240 105 

green 5.0 - - - 350 264 118 

6.0 - - - 362 288 130 

8.0 - - - - 305 150 

0.1 66 52 45 31 20 - 

0.3 165 130 110 65 43 22 

0.5 245 200 157 97 60 29 

Po = 50 mbar 1.0 387 320 240 163 98 45 

Command Range 1.5 421 390 287 219 127 55 

30 – 70 mbar 2.0 - 410 317 255 152 66 


955-200-16 4.0 - - 394 340 240 110 

orange 5.0 - - - 350 264 123 

6.0 - - - 362 288 140 

8.0 - - - - 305 160 

0.2 95 65 60 40 30 14 

0.3 160 117 105 65 44 21 

0.5 241 178 155 97 62 29 

Po = 100 mbar 1.0 380 307 260 162 98 45 

Command Range 1.5 446 379 326 216 126 57 

70– 140 mbar 2.0 - 410 376 255 153 69 


955-200-17 4.0 - - 430 375 240 110 

black 5.0 - - - 390 270 125 

6.0 - - - 405 300 140 

8.0 - - - - 310 160 

0.4 165 125 110 70 45 25 

0.5 204 150 133 83 55 30 

Po = 200 mbar 1.0 320 248 221 149 97 45 

Command Range 1.5 371 310 267 198 126 57 

100– 210 mbar 2.0 - 360 305 230 152 71 


955-200-18 4.0 - - 400 320 240 110 

silver 5.0 - - - 330 265 125 

6.0 - - - 350 300 140 

8.0 - - - - 310 160 



13






Inlet 


standard state (ρn = 0.78 kg/m 3 




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 14 

0.3 122 83 71 52 33 20 

0.5 187 148 117 74 49 28 

Po = 50 mbar 1.0 321 266 208 151 104 45 

Command Range 1.5 352 320 240 190 129 55 

30 – 70 mbar 2.0 - 370 270 231 155 66 

Pressure Spring 3.0 - - - 300 208 94 

955-200-15 4.0 - - - 340 236 117 

green 5.0 - - - 349 259 130 

6.0 - - - 358 281 141 

8.0 - - - - - 168 

0.3 94 78 75 45 28 20 

0.5 137 116 108 70 42 28 

Po = 100 mbar 1.0 293 241 189 122 83 46 

Command Range 1.5 342 332 232 164 107 55 

70 – 140 mbar 2.0 - 401 270 208 134 66 


955-200-16 4.0 - - - 317 237 113 

orange 5.0 - - - 340 251 131 

6.0 - - - 356 270 146 

8.0 - - - - - 172 

0.4 115 95 88 55 38 22 

0.5 154 120 116 69 48 27 

Po = 200 mbar 1.0 293 241 198 127 93 45 

Command Range 1.5 363 343 252 181 121 57 

140– 300 mbar 2.0 - 414 296 228 147 69 


955-200-17 4.0 - - - 350 231 117 

black 5.0 - - - 378 262 139 

6.0 - - - 392 284 150 

8.0 - - - - - 181 

0.7 160 123 110 81 62 29 

Po = 400 mbar 1.0 221 165 153 113 82 40 

Command Range 1.5 294 216 191 142 110 54 

210– 450 mbar 2.0 - 274 231 170 128 66 


955-200-18 4.0 - - - 252 200 112 

silver 5.0 - - - 278 232 133 

6.0 - - - 295 255 150 

8.0 - - - - - 183 



14



Operating Principle 

The function of a regulator is to keep 

the outlet pressure constant, 

independently of the inlet pressure 

and the gas flow. At zero consumption 

(Q = 0), they close tightly. The 

comparator (1) is loaded with a spring 

(2) and transmits its movement to the 

actuator (4) by means of a lever 

system (3). The desired values are 

achieved by the respective command 

variable (spring load). The venturi 

effect, which is achieved by the 

design of the body, outlet section (5) 

and connection channel (6) to the 

comparator (1), overcomes the spring 

characteristics and generates a slight 

increase in the outlet pressure at an 

increasing flow. Without gas flowing, 

the regulator is open, i.e., the set 

command value (spring force) presses 

the comparator (1) as well as the 

lever system (3) downwards; the 

actuator opens and gas flows through 

the orifice (7). As a result, an outlet 

pressure can develop and generate a 

force at the comparator (1), which 

counteracts the set command value. 

If this force exceeds the command 

value, the rods (3) are lifted by the 

comparator (1), and the valve disk (4) 

starts to narrow the clearance area at 

the orifice (7) thereby throttling the 

gas flow. If the outlet pressure falls 

due to the sinking gas volume behind 

the orifice (7) and, hence, in the 

diaphragm compartment (8), the 

actuator (4) is opened by the 

dominating spring force. This 

changing process is repeated until a 

balance between the command value 

and the outlet pressure on the 

comparator (1) depending on the gas 

flow, is achieved. If the actuator (4.7) 

is damaged, or if the rods (3) are 

blocked, the pressure in the 

regulating unit, and behind the 

actuator (4.7) can only increase until 

the integrated SSV responds and 

interrupts the gas flow. 

feeler (1) 

(diaphragm) 

ventilation connection 

desired-value setting 



actuator body 

actuator (4,7) 

(exchangeable nozzles) 

valve disk 


measuring unit with 


(5) 

valve rod reset 

with cap (26,35) 

design with 

leaking-gas SBV 

(8) 

(6) 

diaphragm compartment 

regulating unit body 


with actuator 

closing spring (14) 


15



Over-pressure function 

When the outlet pressure of a gas 

pressure regulator reaches an 

inadmissible value, the increased 

pressure is also transmitted through 

the pulse bore (13) to the comparator 

(9) of the SSV. 

When the force below the comparator 

(9) reaches the force of the load 

spring (10) against over-pressure, the 

comparator (9) with the lever system 

(11) (for SSV with upper switching 

point) and with the guide bush (28) 

(for SSV with upper and lower 

switching points) is pushed upwards. 

The lever system (11) is released so 

that the force of the closing spring 

(14) is set free, and the valve disk (12) 

is pushed against the orifice (7). 

Under-pressure function 

When the outlet pressure of the 

regulator falls to such a degree that 

the force below the comparator (9) 

becomes smaller than the force of the 

spring for under-pressure (30), the 

load spring (30) pushes the 

comparator downwards. 

(Against over-pressure (10), the load 

spring is mounted with the guide bush 

(28) at the retention shoulder (32)). 

The lever system is released so that 

the force of the closing spring (14) is 

also released and the valve disk (12) 

is pushed against the orifice. 

Commissioning 

The SSV is commissioned by pulling 

out the valve rod (26) and engaging 

the lever system (11). However, the 

SSV with upper and lower shut-off 

require that the pressure below the 

comparator (9) lies above the lower 

switching pressure against underpressure, 

and below the switching 

pressure against over-pressure, so 

that 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 the 

valve rod is possible. 

with upper 

switching point 

P so ≥ 400 mbar 

3 

6 

4 

7 

5 13 

14 

12 

34 

36 

11 

10 

9 

32 

33 

12 

limit of lift for 

upper shutoff 

14 

34 36 11 26 35 

with lower 

and upper 

switching points 

10 

30 

28 

9 

Schlumberger reserves the right to change these specifications without prior notice — EU - GA - 00026.0 - GB - 12.00 

For further information, please contact your local Schlumberger representative. 

16

Pressure Regulator 133 / 233 - Peppas Ltd Combustion - energy ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?