Control valves

Pressure reducing/surplussing valves

Dimensions (approximate) in millimetres

A1

A

B

B

A1

A

Sensing pipe connection

1⁄4" BSPT

Leakage line connection

1⁄4" BSPT (option)

Sensing pipe connection

1⁄4" BSPT

C

C

Leakage line connection

1⁄4" BSPT (option)

D

D

All pressure

ranges

Pressure range (bar)

0.02 - 0.12

0.1 - 0.5

A

A1

B C

ØD

C ØD

85

130

76 300

360

300 264

91

150

76 300

360

300 264

85

160

76 300

360

300 264

130

180

80 300

360

300 264

145

200

80 300

360

300 264

185

230

80 300

360

300 264

Size

Pressure range (bar)

0.8 - 2.5

and

2 - 5

0.3 - 1.1

4 - 8

and

8 - 12

C

ØD

C

ØD C

300

200

235

138 235

300

200

235

138 235

300

200

235

138 235

300

200

235

138 235

300

200

235

138 235

300

200

235

138 235

DN15 1⁄2"

DN20 3⁄4"

DN25 1"

DN32 11⁄4"

DN40 11⁄2"

DN50 2"

Weights (approximate) in kg

ØD

138

138

138

138

138

138

13.5

7.1 6.1 3.1

15.3

8.9 7.9 4.9

14.4

8.0 7.0 4.0

18.4

12.0 11.0 8.0

1⁄2" - 1"

DN15 - DN25

11⁄4"- 2"

DN32 - DN50

K

v

values

Valve size

Screwed

Flanged

Screwed

Flanged

3.1

4.9

4.0

8.0

K

v

at 20% offset

Maximum K

v

1⁄2"

DN15

4.0

5.0

3⁄4"

DN20

5.6

7.0

1"

DN25

6.4

8.0

11⁄4"

DN32

17.6

22.0

11⁄2"

DN40

17.6

22.0

2"

DN50

17.6

22.0

To maximise the control accuracy (especially for large load variations) use the K

v

values given at 20% offset. For safety valve sizing

use the maximum K

v

values. Leakage rate £ 0.05% of the maximum Kv value.

TI-P186-01 CH Issue 10

Page 3 of 5

SRV461S and SRV463S Stainless Steel Direct Acting Pressure Reducing Valves

4.6.38