Home About Us Products Sales Service/Training Careers Download Contact us

Product finder Where to find us

Gas pressure regulator RMG 320

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 p. 81)	Face-to-face dimension in mm
Diaphragm assembly Size 1	Diaphragm assembly Size 2
DN 25	20 33	220 480	16 16		184
DN 50	25 31 41 50	400 800 1,300 1,600	16 10 8 (16) 5 (10)	16 16 16 10 (16)	254
DN 80	25 31 41 50 60 80	400 900 1,500 1,800 2,700 4,000		16 16 16 10 (16) 10 (16) 6 (12)	298
DN 100	25 31 41 50 60 80 100	400 850 1,400 1,750 3,000 4,500 5,800		16 16 16 10 (16) 10 (16) 6 (12) 4 (8)	352

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 p. 81)

Face-to-face dimension

in mm

Diaphragm assembly

Size 1

Diaphragm assembly

Size 2

DN 25

220

480

184

DN 50

400

800

1,300

1,600

8 (16)

5 (10)

10 (16)

254

DN 80

400

900

1,500

1,800

2,700

4,000

10 (16)

6 (12)

298

DN 100

100

400

850

1,400

1,750

3,000

4,500

5,800

10 (16)

6 (12)

4 (8)

352

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

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 changes up to 6 bar max.

Specific outlet pressure range for diaphragm assembly 1

Setpoint spring	Specific outlet pressure range W_ds in mbar
Spring no.	Wire Ø in mm	Colour coding	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

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 range for diaphragm assembly 2

Setpoint spring	Specific outlet pressure range W_ds in mbar
Spring no.	Wire Ø in mm	Colour coding	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 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

unit 2

6.3

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

To top

RMG 320

Tables with valve data and outlet pressure ranges

Technical description

RMG_320_00_DE_2004_06

RMG_320_00_EN_2000_07

RMG_320_00_IT_2000_07

RMG_320_00_PL

RMG_320_00_RU_2000_07

Cut-away views

RMG_320_s

Operation & maintenance, spare parts

RMG_320_20_DE_1996_12

RMG_320_20_EN_1993_04

RMG_320_20_PL

RMG_320_20_RU_1996_12