Control valves

Pressure reducing/surplussing valves

Dimensions (approximate) in millimetres

Flanged

Screwed

Actuator type

Size

EN 1092 ASME

BSP / NPT

PN25

150

1

2

3

4

5+6

A1

A1

A2

E

B

C

B

C

B

C

B

C

B

C

DN15

130

127

88

38

537

305

511

250

426

208

426

168

411

143

DN20

150

143

102

38

537

305

511

250

426

208

426

168

411

143

DN25

160

153

134

51

546

305

520

250

435

208

435

168

420

143

DN32

180

176

144

51

608

305

582

250

497

208

497

168

482

143

DN40

200

198

150

62

608

305

582

250

497

208

497

168

482

143

DN50

230

229

180

71

611

305

585

250

500

208

500

168

485

143

DN65

290

295

-

-

633

305

607

250

522

208

522

168

507

143

DN80

310

314

-

-

639

305

613

250

528

208

528

168

513

143

DN100

350

350

-

-

744

305

718

250

633

208

633

168

618

143

DRV with

screwed connections and

Type 1/1N or 2/2N actuator

A2

E

4.6.35

B

Valve weight (kg)

Valve size

Yellow spring

Weight

Blue spring

Red spring

Reduction for

Screwed body

Actuator weight (kg)

Actuator type

Weight

DRV with

flanged connections and

Type 1/1N or 2/2N actuator

Safety information, installation and maintenance

Type 3/3N or 4/4N actuator

arrangement

Type 5/5N actuator

arrangement

DN15

10.8

10.8

11.8

-1.7

1 or 1N

12.3

DN20

11.8

11.8

12.8

-2.2

2 or 2N

6.5

DN25

14

14

15

-2.2

3 or 3N

3.9

DN32

18.8

18.8

20.2

-3.6

4 or 4N

2.5

DN40

DN50

20.4

23.0

20.4

23.0

21.8

24.4

-3.9

-5.5

5 or 5N

2.6

C

DN65

DN80

DN100

For full details see the Installation and Maintenance Instructions (IM-S12-04) supplied with the product.

Installation note:

Caution - To protect the actuator diaphragm on steam applications a WS4 series water seal pot must be installed in the downstream

pressure signal line to the actuator. Refer to TI-S12-03 for details.

The valve should be mounted vertically downwards in a horizontal pipeline with the direction of flow as indicated by the arrow on the valve

body. For applications with downstream temperatures below 125°C the valve can alternatively be mounted vertically upwards.

How to order

Example: 1 off Spirax Sarco DN40 DRV7B3 direct acting pressure reducing valve having flanged PN40 connections.

Note: Add suffix 'N' if the Nitrile rubber diaphragm is required. i.e. DRV7B3N.

TI-P204-01 CH Issue 14

DRV7 and DRV7G SG Iron Pressure Reducing Valves

Page 6 of 6

Note:

A1

31.7

38.2

53.9

31.7

38.2

53.9

33.5

40.0

56.5

-

-

-

To calculate the total product weight add the

valve and actuator weights together.

B