UK Product Handbook 2026 - Volume 1

Control systems Pressure reducing/surplussing valves

4

Screwed, Flanged PN40 and Class 300

PN40

Body design conditions

Flanged Class 150

PN16

Screwed, Flanged PN40 and Class 300

40 bar g @ 50 °C (580 psi g @ 122 °F)

Maximum allowable pressure

Flanged Class 150

16 bar g @ 50 °C (232 psi g @122 °F)

Screwed, Flanged PN40 and Class 300

200 °C @ 31.8 bar g (392 °F @ 461 psi g)

Maximum allowable temperature

Flanged Class 150

200 °C @ 12.7 bar g (392 °F @ 184 psi g)

Minimum allowable temperature

-10 °C

(14 °F)

Steam (Saturated)

190 °C @ 11.5 bar g (374 °F @ 167 psi g)

Screwed, Flanged PN40 and Class 300

Other Liquids & Gases

50 °C @ 40 bar g (122 °F @ 580 psi g)

Maximum operating temperature

Steam (Saturated)

190 °C @ 11.5 bar g (374 °F @ 167 psi g)

Flanged Class 150

Other Liquids & Gases

50 °C @ 16 bar g (122 °F @ 232 psi

Steam (Saturated)

11.5 bar g @ 190 °C (167 psi g @ 374 °F)

4.6 59

Screwed, Flanged PN40 and Class 300

Other Liquids and Gases

40 bar g @ 50 °C (580 psi g @ 122 °F)

Maximum operating pressure

Steam (Saturated)

11.5 bar g @ 190 °C (167 psi g @ 374 °F)

Flanged Class 150

Other Liquids and Gases

16 bar g @ 50 °C (232 psi g @ 122 °F)

Minimum operating temperature

-10 °C

(14 °F)

Permissible reduction ratio (maximum P 1 /P 2 ) Setting range (bar g) Nominal diameter ½ " - 1" DN15 - DN25 1 ¼ " - 2" DN32 - DN50

Maximum differential pressure

0.02 - 0.12

80:1

50:1

0.10 - 0.50

40:1

25:1

0.30 - 1.10

30:1

18:1

0.80 - 12.00

20:1

12:1

Screwed, Flanged PN40 and Class 300

60 bar g

Designed for a maximum cold hydraulic test pressure of:

Flanged Class 150

24 bar g

TI-P186-01 CTLS Issue 13

Page 3 of 7

SRV461S and SRV463S, SRV461S Food+ and SRV463S Food+ Stainless Steel Direct Acting Pressure Reducing Valves

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