Control valves

Pressure reducing/surplussing valves

Page 3 of 3

Dimensions / weights (approximate) in mm and kg

Spare parts

The spare parts available are shown in solid outline. Parts drawn

in broken line are not supplied as spares.

Size

DN15 - 1⁄2"

DN20 - 3⁄4"

DN25 - 1"

Weight

A

B

C

D

E

F

Scr Flg

Available spares

* Pressure

adjustment

spring

83 150

60

96 150

60

108 160

60

130

25

97 1.60 3.90

130

25

107 1.70 4.25

130

25

117 1.95 4.65

Grey

Green

Orange

0.14 to 1.7 bar g

1.40 to 4.0 bar g

3.50 to 8.6 bar g

Stainless steel or

phosphor bronze

4, 18

4, 18

4, 18

5, 6

E Withdrawal distance

C

* Bellows assemblyspecify type

* Spring housing hex. bolts (set of 4)

Valve and seat assembly

* Gasket set

* Common to all sizes.

How to order spares

7

6, 11, 12, 19

6, 12

D

Always order spares by using the description given in the column

headed 'Available spares' and state the size, type and pressure range

of the reducing valve.

Example: 1 off Pressure adjustment spring (orange), having a

downstream pressure range of 3.5 to 8.6 bar g for a Spirax Sarco

DN15 BRV2S pressure reducing valve.

C

B

F

A

18

Safety information, installation and maintenance

For full details see the Installation and Maintenance Instructions

(IM-P045-10) supplied with the product.

Installation note:

The valve should be installed in a horizontal pipeline with the

direction of flow as indicated by the arrow on the valve body.

BRV2SP and BRV2BP: When external pressure sensing is used,

remove the blanking plug (16) and fit the " / 6 mm O/D compression

fitting (17 supplied). The other end of the 6 mm sensing pipe should

be connected into the downstream pipework at least 1 m downstream

from the valve.

How to order

Example: 1 off Spirax Sarco DN15 BRV2S pressure reducing

valve with SG iron body flanged EN 1092 PN25, stainless steel

bellows and fitted with an orange spring for downstream pressure

control of 3.5 to 8.6 bar g.

7

Spring housing

hex. bolts

Pressure

adjustment

spring

4

6

5

Bello

w

bly

6

6

Gasket set

12

s assem

19

and seat

Valve

assembly

11

12

Recommended tightening torques

Item

Part

No.

7

Hex. bolts

11

Valve seat

or

mm

N m

18 - 24

108 - 132

32 A/F

M8 x 25

BRV2S and BRV2B SG Iron Pressure Reducing Valve

TI-P045-14 CH Issue 5

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4.6.4