Control systems Pressure reducing/surplussing valves
4
Materials
18 2
20
3 7
4
1
Note: Items 10, 11, 13, 14, 15 and 19 are all part of one assembly.
5 6
10 19
8 15 13 11 12
14
17
4.6 9
16
No.
Part
Materials
1 2 3 4
Spring housing
Aluminium epoxy coated
LM 24
Adjustment handwheel
Polypropylene
Top spring plate
Cast iron
DIN 1691 GG 20
Pressure adjustment spring
Silicon chrome spring steel
BS 2803 685 A55 Range 2
Phosphor bronze
BS 2872 CZ 122
5
Bellows assembly
Stainless steel
316Ti/316L
6 7 8
Bellows assembly gasket
Stainless steel reinforced exfoliated graphite
Hex. bolt (M8 x 25 mm)
Steel zinc plated
BS 3692 Gr. 8.8
Body
Gunmetal
BS EN 1982 CC491K or BS 1400 LG2
10
Pushrod
Stainless steel
ASTM A276 316L
11
Valve seat
Stainless steel
BS 970 431 S29
12 13 14 15 16
Valve seat gasket
Stainless steel
BS 1449 316 S11
Valve
Stainless steel
AISI 420
Valve return spring
Stainless steel
BS 20056 316 S42
Strainer screen
Stainless steel
BS 1449 316 SH
Cap
Brass
BS 2872 CZ 122
17
Cap gasket
Stainless steel reinforced exfoliated graphite
18 19 20
Spring range ID disc
Polypropylene
Bulkhead plate
Stainless steel
316L
Tamper-proof pin
Mild steel copper plated
TI-P045-09 CTLS Issue 8
Page 3 of 6
BRV2S5 and BRV2B5 Gunmetal Pressure Reducing Valves
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