Description

Types SRV461S and SRV463S are direct acting pressure reducing valves with

all wetted parts in AISI 316L/1.4404, 1.4408 and 1.4462 stainless steel. For

steam, liquid or gas applications.

Typical applications include: Clean steam, gas and liquid supplies to centrifuges,

freeze dryers, sterilisers, autoclaves, process tanks, humidifiers and culinary

equipment.

Pressure / temperature limits

SRV461S

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Steam

E

4.6.36

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B

saturation

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curve

C

F

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Control valves

Local regulations may restrict the use of this product to below the conditions quoted.

In the interests of development and improvement of the product, we reserve the right to change the specification without notice.

Pressure reducing/surplussing valves

© Copyright 2016

SRV461S and SRV463S

Stainless Steel

Direct Acting Pressure Reducing Valves

TI-P186-01

CH Issue 10

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SRV463S

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Steam

Sizes and pipe connections

SRV461S

1⁄2", 3⁄4", 1", 11⁄4", 11⁄2" and 2"

Screwed NPT, BSP

DN15, DN20, DN25, DN32, DN40

SRV463S

and DN50

Flanged ASME (ANSI) 150, EN 1092

Body design conditions

SRV461S

SRV463S

PN40

PN16

38barg@38°C

15.2 bar g @ 50°C

300°C @ 23.2 bar g

300°C@9barg

-10°C

190°C @ 10.9 bar g

130°C @ 12 bar g

bar g

bar g

bar g

bar g

bar g

bar g

bar g

G11⁄4" - 2"

DN32 - DN50

50:1

25:1

18:1

12:1

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A

B

E

C

F

saturation

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curve

SRV461S

Maximum design pressure

SRV463S

Maximum design temperature

SRV461S

SRV463S

Minimum design temperature

Maximum operating temperature

Steam

Liquid and gases

Permissible reduction ratio

(maximum P1 / P2)

Minimum operating temperature

Note: for lower operating temperatures consult Spirax Sarco

Maximum differential pressure

Designed for a maximum cold

hydraulic test pressure of:

SRV461S

SRV463S

opposite

60 bar g

24 bar g

0.12

0.50

1.10

0.80 - 12.00

Pressure bar g

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Pressure bar g

The product must not be used in this region.

The product should not be used in this region or beyond its operating

PN16

Pressure ranges

The SRV461S and

SRV463S are available

for use within the

downstream pressure

ranges shown.

Note: The pressure

range required needs to

be specified at the time

of order placement:-

range as damage to the internals may occur.

A-B-C Maximum operating conditions for steam

D-E-F Maximum operating conditions for liquids and gases

0.02 - 0.12

0.10 - 0.50

0.30 - 1.10

0.80 - 2.50

2.00 - 5.00

4.00 - 8.00

6.00 - 12.00

-10°C

see the Permissable reduction ratio table

0.02 -

0.10 -

0.30 -

Setting range

(bar g)

Nominal

G1⁄2" - 1"

DN15 - DN25

80:1

40:1

30:1

20:1

diameter

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