UK Product Handbook 2026 - Volume 1

44

Control systems Self-acting controls

Sizes and pipe connections 1¼", 1½", 2" Screwed BSP T Rp (ISO 7-1) or NPT

Pressure/temperature limits

Pressure psi g

0

72.5

145

217

290

362

500 392

Steam saturation curve

212

32

Pressure bar g

The product must not be used in this region.

Body design conditions

PN25

Maximum design pressure

25 bar g @ 120 °C 363 psi g @ 248 °F

4.5 52

Maximum design temperature

260 °C @ 10.5 bar g

500 °F @ 152 psi g

Minimum design temperature

-10 °C

14 °F

Maximum operating pressure for saturated steam service

17.5 bar g

254 psi g

Maximum operating temperature

260 °C @ 10.5 bar g

500 °F @ 152 psi g

Minimum operating temperature

0 °C

32 °F

Size

1¼"

1½"

2"

Maximum differential pressure

bar

psi

bar

psi

bar

psi

9.0

131

8.2

119

6.9

100

Designed for a maximum cold hydraulic test pressure of

38 bar g

551 psi g

TI-P078-03 CTLS Issue 13

Page 2 of 5

KY51 Bronze Self-acting Control Valves

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