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Gas pressure regulator RMG 330

Valve specifications

Pipe sizes	Valve seat diameter in mm	Flow rate coefficient K_G* in m³/(h · bar)	Inlet pressure range Δ p_u in bar (in brackets: max. inlet pressure, see page 81)	Face-to-face dimension in mm
Diaphragm assembly Size 1	Diaphragm assembly Size 2
DN 25	20 33	200 420	16 10 (16)		200
DN 50	20 33	200 500	16 10 (16)		230
DN 80	25 31 41 50	400 850 1,400 1,750	16 10 (16) 8 (16) 5 (10)	16 16 16 10 (16)	420
DN 100	25 31 41 50 60 80 100	400 850 1,400 1,750 3,000 4,200 4,700		16 16 16 10 (16) 10 (16) 6 (12) 4 (8)	500

Pipe sizes

Valve seat diameter

in mm

Flow rate coefficient

K_G*

in m³/(h · bar)

Inlet pressure range

Δ p_u in bar

(in brackets: max. inlet pressure, see page 81)

Face-to-face dimension

in mm

Diaphragm assembly

Size 1

Diaphragm assembly

Size 2

DN 25

200

420

10 (16)

200

DN 50

200

500

10 (16)

230

DN 80

400

850

1,400

1,750

10 (16)

8 (16)

5 (10)

10 (16)

420

DN 100

100

400

850

1,400

1,750

3,000

4,200

4,700

10 (16)

6 (12)

4 (8)

500

*) Flow rate coefficient for natural gas: (ρ_b = 0.83 kg/m³, t =15 °C)

Specific outlet pressure ranges for diaphragm assembly 1

Setpoint spring	Specific outlet pressure range W_ds in mbar
Spring no.	Wire Ø in mm	Colour coding	Measuring unit 1*
0 1 2 3 4 5 6 7 8 9	3.6 4 4.5 5.3 6.3 7 7.5 8.5 9.5 10.5	signal blue grey yellow brown light red dark red light blue white green black	20 to 30 25 to 50 45 to 100 90 to 200 150 to 300 250 to 400 350 to 500 450 to 600 550 to 800 650 to 1,000

Setpoint spring

Specific outlet pressure range

W_ds in mbar

Spring
no.

Wire Ø
in mm

Colour
coding

Measuring
unit 1*

3.6

4.5

5.3

6.3

7.5

8.5

9.5

10.5

signal blue

grey

yellow

brown

light red

dark red

light blue

white

green

black

20 to 30

25 to 50

45 to 100

90 to 200

150 to 300

250 to 400

350 to 500

450 to 600

550 to 800

650 to 1,000

*) Version with incorporated Safety Relief Valve (SRV) or with additional safety diaphragm for outlet pressure ranges only up to p_{d max} 0.5 bar

Specific outlet pressure ranges for diaphragm assembly 2

Setpoint spring	Specific outlet pressure range W_ds in mbar
Spring no.	Wire Ø in mm	Colour coding	Measuring unit 2
0 1 2 3 4 5 6 7 8 9	5 6.3 7 8 9 10 11 12 13 14	blue grey yellow brown light red dark red light blue white green black	20 to 30 25 to 50 45 to100 90 to 200 150 to 300 250 to 400 350 to 500 450 to 600 550 to 800 650 to 1,000

Setpoint spring

Specific outlet pressure range

W_ds in mbar

Spring
no.

Wire Ø
in mm

Colour
coding

Measuring
unit 2

6.3

blue

grey

yellow

brown

light red

dark red

light blue

white

green

black

20 to 30

25 to 50

45 to100

90 to 200

150 to 300

250 to 400

350 to 500

450 to 600

550 to 800

650 to 1,000

Accuracy class and lock-up pressure class

Outlet pressure range (p_d range in mbar)	Accuracy Class AC	Lock-up pressure Class SG
20 to 30 > 30 to 100 > 100 to 500 > 500 to 1,000	10/20 5/10 5 2.5	30/50 10/20 10 10

Outlet pressure range

(p_d range in mbar)

Accuracy Class

Lock-up pressure Class

20 to 30

> 30 to 100

> 100 to 500

> 500 to 1,000

10*/20

5*/10

2.5

30*/50

10*/20

*) Values apply to inlet pressure variation up to 6 bar max.

Setting range of SSV control element

Actuator system	Overpressure W_do in bar	Underpressure W_du
K 1a K 2a K 4 K 5 K 6	0.05 to 1.5 0.4 to 5.2 0.04 to 0.5 0.2 to 1.5 0.6 to 4.5	10 to 120 mbar 60 to 400 mbar 5 to 60 mbar 15 to 120 mbar 40 to 300 mbar

Actuator system

Overpressure

W_do in bar

Underpressure

W_du

K 1a

K 2a

K 4

K 5

K 6

0.05 to 1.5

0.4 to 5.2

0.04 to 0.5

0.2 to 1.5

0.6 to 4.5

10 to 120 mbar

60 to 400 mbar

5 to 60 mbar

15 to 120 mbar

40 to 300 mbar

To top

RMG 330

Tables with valve data, outlet pressure ranges, accuracy class and setting range

Technical description

RMG_330_00_DE_2011_02

RMG_330_00_EN_2011_02

RMG_330_00_IT_2000_01

RMG_330_00_PL

RMG_330_00_RU_2011_02

Cut-away views

RMG_330_s

Operation & maintenance, spare parts

RMG_330_20_DE_1998_04

RMG_330_20_DE_2004_12

RMG_330_20_EN_1995_11

RMG_330_20_ES_1995_11

RMG_330_20_NL_1998_04

RMG_330_20_PL

RMG_330_20_RU_1998_04