Control valves

Pressure reducing/surplussing valves

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TI-P186-05

CH Issue 7

Cert. No. LRQ 0963008

Description

SRV2S

Stainless Steel

Pressure Reducing Valve

ISO 9001

18

2

on the adjustment handwheel (2):

23

Grey

For downstream pressure control: 0.14 to 1.7 bar g

7

Green

For downstream pressure control: 1.40 to 4.0 bar g

Orange

For downstream pressure control: 3.50 to 8.6 bar g

Note: Where control spring ranges overlap always use the lower

range to give better control.

Pressure Equipment Directive 97/23/EC

Certification

This product is available with certification to EN 10204 3.1.

Note: All certification/inspection requirements must be stated

at the time of order placement.

Sizes and pipe connections

1⁄2", 3⁄4" and 1" screwed BSP ( BS 21 Rp ) or NPT.

DN15, DN20 and DN25 Flanged EN 1092 PN25 and ANSI 150.

Pressure/temperature limits

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Pressure bar g

The product must not be used in this region.

The SRV2S is a compact, stainless steel, direct acting pressure

reducing valve designed for applications using steam or gases

such as compressed air. All wetted parts are constructed in 316L

stainless steel.

22

SRV2S pressure reducing valves are supplied with one of three

3

colour coded springs which are identified by the disc (18) located

20

4

1

6

5

9

12

11

13

15

8

16

Standards

10

This product fully complies with the requirements of the European

19

14

17

No. Part

Pressure

4 adjustment

spring

5 Bellows assembly

6 Bellows assembly gasket

7 Hex. bolt (M8 x 25 mm)

8 Body

9 Guide bush

10 Pushrod

11 Valve seat

12 Valve seat gasket

13 Valve

14 Valve return spring

15 Strainer screen

16 Bottom cap

17 Bottom 'O' ring

18

Spring range

identity disc

19 Bulkhead plate

20 Tamper-proof pin

21 Flanges (not shown)

22 Washer

Material

Silicon chrome

spring steel

Steam

saturation

curve

BS 2803 685 A55

Range 2

Electroless nickel finish

Stainless steel

316Ti / 316L

Reinforced exfoliated graphite

Stainless steel

BS 6105 A 270

Body design conditions

Maximum design pressure

Maximum design temperature

Minimum allowable temperature

Maximum operating pressure

for saturated steam service

Maximum operating temperature

Stainless steel

Graphite filled PTFE

PN25

25 bar g @ 120°C

212°C @ 19 bar g

0°C

19 bar g

212°C @ 19 bar g

19 bar

Aluminium

LM6

Electroless nickel finish

Plastic

Polypropylene

Cast iron

DIN 1691 GG 20

Electroless nickel finish

Stainless steel

Stainless steel

Stainless steel

Stainless steel

Stainless steel

Stainless steel

Stainless steel

PTFE

Plastic

ASTM A276 316L

BS 3100 316 C 12

ASTM A351 CF 3M

DIN 1.4404

BS 1449 316 S11

316L

BS 2056 316 S42

BS 1449 316 SH

ASTM A276 316L

Polypropylene

BS 1449 316 S13

AISI 316L

DIN 1.4404

BS 3100 316 C12

ASTM A351 CF 3M

External electropolish finish

Minimum operating temperature

Note: For lower operating temperatures consult Spirax Sarco

Maximum downstream reduced pressure

Maximum differential pressure

Maximum recommended turndown ratio 10:1 at maximum flow

Designed for a maximum cold hydraulic test pressure of 38 bar g

Note: With internals fitted, test pressure must not exceed 19 bar g

Stainless steel

Mild steel copper plated

0°C

8.6 bar g

Materials

No. Part

1 Spring housing

2 Adjustment handwheel

3 Top spring plate

Material

Stainless steel

Stainless steel

DIN 1.4404

BS 3100 316 C12

ASTM A351 CF 3M

Electropolish finish

316L

23 Drive spindle

BS 970 230 M07

Electroless nickel finish

Carbon steel

Note: Items 9, 10, 11, 13, 14 and 15 are all part of one assembly.

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.

© Copyright 2008

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