Control valves
Pressure reducing/surplussing valves
Page 3 of 3
Dimensions / weight (approximate) in mm and kg
Siz
e
A
B
C
D
E
F
Weight
1⁄2"
83
32
62
130
25
40
2
3⁄4"
96
32
62
130
25
40
2
1" 108
32
62
130
25
40
2
Withdrawal
distance
Spare parts
The spare parts available are shown in solid outline. Parts drawn
in broken line are not supplied as spares.
Available spares
* Pressure
adjustment
spring
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
* 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, 17
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
1⁄2" BRV2S5 pressure reducing valve.
D
18
Pressure
adjustment
spring
4
6
Valve
19
and seat
assembly
11
12
7
Spring housing
hex. bolts
C
Withdrawal
distance
Safety information, installation and maintenance
For full details see the Installation and Maintenance Instructions
(IM-P045-11) 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.
How to order
Example: 1 off Spirax Sarco 1⁄2" BRV2S5 pressure reducing valve
with gunmetal body, screwed BSP connections, stainless steel
bellows and fitted with an orange spring for downstream pressure
control of 3.5 to 8.6 bar g.
5
Bellows assembly
6
6
12
Gasket set
17
N m
18 - 24
108 - 132
65 - 75
F
B
A
Recommended tightening torques
Item no.
7
11
16
Part
Hex. bolts
Valve seat
Bottom cap
or
mm
13 A/F
M8 x 25
32 A/F
32 A/F
BRV2S5 and BRV2B5 Gunmetal Pressure Reducing Valves
TI-P045-09 CH Issue 6
Page 3 of 3
4.6.8
