13

5

7

8

9

11

12

17

16

Materials

No. Part

1

Body assembly

2

Pressure adjustment control spring

3

Adjustment screw

4

Plain washer

5

Adjustment knob

6

Spirol pin

7

Spring plate

8

Spring housing

9

Upper gasket

10 Lower gasket

11 Bellows assembly

12 Bellows / pushrod

13 Printed cap

15 Locking pin

15

6

4

2

21

3

1

25

10

26

19

20

4.6.14

* 16

17 Screen

18 Lower pushrod

19 End cap

20 Screw

21 Screw

22 Washer

23 Guide bush

24 Return spring

25 PTFE washer

26 'O' ring seal

Head (incorporating seal Pt No.27)

* 27

* Note: Parts 16 and 27 are not shown.

Head 'O' ring seal

assembly

SG iron

Silicon chrome

Carbon steel

Stainless steel

Mineral filled nylon 66

Chrome plated stainless steel

Cast iron

Aluminium

Semi-rigid graphite laminated

Semi-rigid graphite laminated

Stainless steel

Stainless steel

Polypropylene

Copper

Stainless steel

Stainless steel

Stainless steel

SG iron

Zinc plated steel

Zinc plated steel

Stainless steel

PTFE 15% graphite filled

Stainless steel

Virgin PTFE

EPDM

EDPM

DIN 1693 GGG 40.3 ELNP coated

BS 2803 685 A55

BS 970 230 M07

Gr.18/10/3-4A

10B 140

AISI 420

DIN 1691 GG 20

2ELNP coated

316L

316L

BS 970 431 S29

316L

BS 970 431 S29

DIN 1693 GGG 40.3 ELNP coated

BS 3692 Gr. 8.8

BS 3692 Gr. 8.8

BS 1449 304 515

BS 2056 316 S42

BS 6564 Type 2 Gr. B

E 0962-90

E 0962-90

Control valves

Pressure reducing/surplussing valves

Page 2 of 4

242318

22

Material

BRV71 and BRV73 SG Iron Pressure Reducing Valves

TI-P210-01 CH Issue 4

Page 2 of 4

/PTFE 15% graphite fill