Control valves

Pressure reducing/surplussing valves

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Cert. No. LRQ 0963008

BRV2S5 and BRV2B5

Gunmetal

Pressure Reducing Valves

TI-P045-09

CH Issue 6

20

ISO 9001

Description

The BRV2S5 and BRV2B5 are direct acting pressure reducing

valves designed for applications using steam or gases such as

compressed air.

Available types

BRV2S5 Stainless steel bellows

BRV2B5 Phosphor bronze/brass bellows

BRV2S5 and BRVB5 pressure reducing valves are supplied with

one of three colour coded springs which are identified by the disc

(18) located on the adjustment handwheel; Note: where control

spring ranges overlap always use the lower range to give better

control:

Grey

For downstream pressure control: 0.14 to 1.7 bar g

Green

For downstream pressure control: 1.40 to 4.0 bar g

Orange

For downstream pressure control: 3.50 to 8.6 bar g

19

18

2

3

7

4

1

Standards

This product fully complies with requirements of the European

Pressure Equipment Directive 97/23/EC.

Certification

This product is available with a manufacturers' Typical Test Report.

Note: All certification/inspection requirements must be stated at

the time of order placement.

10

14

17

Materials

No. Part

1 Spring housing

2 Adjustment handwheel

3 Top spring plate

4

Pressure adjustment

spring

5 Bellows assembly

6 Bellows assembly gasket

7 Hex. bolt (M8 x 25 mm)

8 Body

10 Pushrod

11 Valve seat

12 Valve seat gasket

13 Valve

14 Valve return spring

15 Strainer screen

16 Cap

17 Cap gasket

6

5

12

11

13

15

8

16

LM 24

Sizes and pipe connections

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

Pressure/temperature limits

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Materials

Aluminium epoxy coated

Polypropylene

Steam

saturation

curve

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Pressure bar g

The product must not be used in this region.

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Cast iron

Silicon chrome

spring steel

Stainless steel

Phosphor bronze

DIN 1691 GG 20

BS 2803 685 A55

Range 2

316Ti/316L

BS 2872 CZ 122

Body design conditions

Maximum allowable pressure

Maximum allowable temperature

Minimum allowable temperature

Maximum operating pressure

for saturated steam service

Maximum operating temperature

Minimum operating temperature

PN25

25 bar g @ 120°C

210°C @ 17 bar g

0°C

17 bar g @ 210°C

210°C @ 17 bar g

Stainless steel reinforced

exfoliated graphite

Steel zinc plated BS 3692 Gr. 8.8

0°C

Note: For lower operating temperatures consult Spirax Sarco.

Gunmetal

BS

Stainless steel

Stainless steel

Stainless steel

Stainless steel

Stainless steel

Stainless steel

Brass

EN 1982 CC491K or

BS 1400 LG2

ASTM A276 316L

BS 970 431 S29

BS 1449 316 S11

AISI 420

BS 20056 316 S42

BS 1449 316 SH

BS 2872 CZ 122

Maximum downstream reduced pressure

8.6 bar g

Maximum differential pressure

17 bar

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 17 bar g

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

Stainless steel

exfoliated graphite

reinforced

18 Spring range ID disc

19 Bulkhead plate

20 Tamper-proof pin

Note: Items 10, 11, 13, 14, 15 and 19 are all part of one assembly.

Polypropylene

Stainless steel

316L

Mild steel copper plated

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