Control valves

Pressure reducing/surplussing valves

Materials

No.

Part

1

Body

2

Bonnet

3

Valve seat

DN15

4

Valve seat gasket

DN20

Material

SG iron

SG iron

Stainless steel

Stainless steel

Mild steel

Reinforced exfoliated graphite

Stainless steel

Stainless steel

Arlon 1555

Stainless steel

Reinforced exfoliated graphite

Reinforced exfoliated graphite

Steel

Steel

DIN 1693 GGG 40.3

DIN 1693 GGG 40.3

BS 970 431 S29

BS 970 431 S29

BS 6105 A2

BS 970 431 S29

AISI 316L

and DN25

DN32 to DN50

5

Valve head

6

Valve head screw

7

Valve head seal

8,(9)

Bush (Part No. 9, Bush; part of item 10)

10

Balancing bellows assembly

DN25

11

Balancing bellows assembly gasket

12

Bonnet gasket

13

Bonnet nuts

to DN100

DIN 267 Pt13 Gr. 8

DIN 267 Pt13 Gr. 8.8

DN15toDN25M10x30mm, DN50andDN65M12x35mm, DN32andDN40M10x35mm, DN80andDN100M16x40mm

Bonnet studs

15

Pillars

14

16

Pillars nuts

Steel zinc plated

Steel zinc plated

Cast iron zinc plated

Chrome vanadium

PTFE / Steel composite

Stainless steel

Stainless steel 'S' type

Reinforced exfoliated graphite

Steel zinc plated

BS 970 230 M07

BS 3692 Gr. 8

DIN 1691 GG25

AISI 316L

BS 970 230 M07

BS 970 431 S29

BS 970 230 M07

BS 1449 Pt 1 HR14

BS 970 230 M07

BS 970 230 M07

BS 1449 Pt 1 HR14

DIN 1514 St W24

BS EN 10025 S355 J2G3

BS 3692 Gr. 5.6

DIN 267 Pt 13 Gr. 8.8

BS 3692 Gr. 5.6

DIN 267 Pt13 Gr. 8.8

BS 970 431 S29

Nitrile fabric reinforced

BS 6105 A2

ASTM A351 CF8M

BS 1449 Pt 1 HR14

BS 970 230 M07

BS 3692 GR. 8

DTD 734

BS 1449 CR4

BS 1449 CR4

ASTM A216 Gr. WCB

BS 5216 Gr. M4

BS 4168 Gr. 12.9

17

Spring adjuster

18

Spring(s)

19

Bearing (part of Item 20)

20

Sealing bellows assembly

21

Sealing bellows gasket

22

Clamp nut

23

Adaptor

24

Adaptor gasket

25

Lock-nut

26

Spring plate

27

Needle bearing

28

Setting nut

29

Bearing locator

30

Adjuster sleeve

31

Mounting plate

32

Housing

33

Housing bolts

34

Housing nuts

35

Spindle guide

36

Diaphragm

37

Hexagon headed bolt

38

Sealing washer

39

Diaphragm clamp

40

Piston

41

Spindle

42

Mounting nuts

43

Coupling

44

Thread insert (part of item 20)

45

Self locking nut

46

Washer

47

Circlip

48

Spindle seal 'O' ring

49

Bearing

50

Housing seal 'O' ring

51

Vent plug

52

Coupling clamp

53

Spring

54

Clamp screw

DN15 and DN20

DN25 to DN100

Types 11(N) to 14(N)

Type 15(N)

Types 11(N) and 12(N)

Types 13(N), 14(N) and 15(N)

Types 11(N) and 12(N)

Types 13(N), 14(N) and 15(N)

Stainless steel

Reinforced exfoliated graphite

Steel zinc plated

Steel zinc plated

Steel

Steel zinc plated

Steel zinc plated

Steel zinc plated

Steel zinc plated

Steel

Steel

Steel zinc plated

Steel zinc plated

Steel zinc plated

Steel zinc plated

Stainless steel

EPDM fabric reinforced or suffix 'N'

Stainless steel

Fibre

Stainless steel

Carbon steel zinc plated

Carbon steel zinc plated

Steel zinc plated

Steel zinc plated

Stainless steel

Steel zinc plated

Steel zinc plated

Steel zinc plated

EPDM or Suffix 'N' Nitrile

PTFE/steel composite

EPDM or suffix 'N' Nitrile

Plastic

Steel zinc plated

Spring steel

Steel zinc plated

Type 12 only

DEP7 SG Iron Excess Pressure Valve Materials of Construction

TI-P205-02 CH Issue 2

4.6.52