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Gas pressure regulator RMG 512

Valve specifications

Pipe size Inlet (DN)	Pipe size Outlet (DN)	Valve seat diameter in mm	Flow rate coefficient K_G* in m³/(h · bar)
25	25 100 150	25	550 490 490
50	50 150 200	50	2,200 1,920 1,980
80	80 250	80	5,610 5,060
100	100 300	100	8,800 7,810
150	150 300 400	150	19,800 14,630 16,830
200	200 400 500	200	37,400 25,850 30,800
250	250 400 500	200	41,800 25,850 30,800
250	250 500 600	250	55,000 39,600 46,750

Pipe size

Inlet (DN)

Pipe size

Outlet (DN)

Valve seat diameter

in mm

Flow rate coefficient

K_G* in m³/(h · bar)

100

150

550

490

150

200

2,200

1,920

1,980

250

5,610

5,060

100

300

100

8,800

7,810

150

300

400

150

19,800

14,630

16,830

200

400

500

200

37,400

25,850

30,800

250

400

500

200

41,800

25,850

30,800

250

500

600

250

55,000

39,600

46,750

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

Specific outlet pressure range with pilot RMG 630/630-1 (formerly RMG 640)

	Setpoint spring			Specific outlet pressure range W_ds in bar
	Spring no.	Wire Ø in mm.	Colour coding	Specific outlet pressure range W_ds in bar
Control stage	0 1 2 3 4 5	4.5 3.6 4.5 5 6.3 7	black blue black grey brown red	0.3 to 1** 0.5 to 2 1 to 5 2 to 10 5 to 20 10 to 40
Control stage with metal-harmonica	6 7	8/7 9	green white	10 to 50 20 to 90
Automatic load limiting stage		5	green	0.5 to 15 automatic: above p_d

**) Type with larger measuring diaphragm

Accuracy Class and lock -up pressure Class with pilot RMG 650

Outlet pressure range (p_drange) in bar	Accuracy Class AC	Lock-up pressure Class SG
0.3 to 0.5 > 0.5 to 1 > 1 to 2.5 > 2.5 to 5 > 5	10 10 2.5 1 1	30 20 10 10 5

Outlet pressure range

(p_drange) in bar

Accuracy Class

Lock-up pressure Class

0.3 to 0.5

> 0.5 to 1

> 1 to 2.5

> 2.5 to 5

> 5

2.5

Face -to -face dimension in mm

Pipe size DN	Revised design version	Flange PN 25 + PN 40	Flange according to ANSI 16.5
Inlet	Outlet	Class 300 RF	Class 300 RTJ	Class 600 RF/RTJ
25	25 100 150	b b b	200 360 360	197 359 359	210 365 365	210 365 365
50	50 150 200	b b b	270 422 422	267 421 421	283 429 429	286 430 430
80	80 *250	b b	310 512	318 516	333 523	337 525
100	100 *300	b b	370 548	368 548	384 555	394 560
150	150 300 400	c c c	508 550 550	508 550 550	508 550 550	508 550 550
200	200 400 500	c c c	610 650 650	610 650 650	610 650 650	610 650 650
**250	250 400 *500	c c c	630 660 660	630 660 660	630 660 660	630 660 660
250	250 500 600	c c c	752 752 752	752 752 752	752 752 752	752 752 752

Pipe size DN

Revised design version

Flange

PN 25 + PN 40

Flange according to ANSI 16.5

Inlet

Outlet

Class 300 RF

Class 300 RTJ

Class 600 RF/RTJ

*100

*150

200

360

197

359

210

365

210

365

*150

*200

270

422

267

421

283

429

286

430

*250

310

512

318

516

333

523

337

525

100

*300

370

548

368

548

384

555

394

560

150

*300

*400

508

550

508

550

508

550

508

550

200

*400

*500

610

650

610

650

610

650

610

650

**250

*250

*400

*500

630

660

630

660

630

660

630

660

250

*500

*600

752

*) with noise-reducing outlet (flange only Class 600)
**) with valve seat Ø 200

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RMG 512

Tables with valve data, outlet pressure ranges, accuracy class and dimensions

Gas pressure regulator RMG 512

Valve specifications

Specific outlet pressure range with pilot RMG 630/630-1 (formerly RMG 640)

Accuracy Class and lock -up pressure Class with pilot RMG 650

Face -to -face dimension in mm

RMG 512

Technical description

Cut-away views

Operation & maintenance, spare parts