Control valves

Control valves

Type

No.

Part

Material

Material designation

ASTM / DIN STD

Cast iron

1

Body

Cast iron

DIN 1691 GG 25

2

Standard bonnet

SG iron

DIN 1693 GGG 40.3

Extended bonnet

Carbon steel

DIN 17243 C22.8

SG iron

1

Body

SG iron

DIN 1693 GGG 40.3

2

Standard bonnet

SG iron

DIN 1693 GGG 40.3

Extended bonnet

Carbon steel

DIN 17243 C22.8

Carbon steel

1

Body

Carbon steel

DIN 17245 GG C25

2

Standard bonnet

Carbon steel

DIN 16 MnCr 5

Extended bonnet

Carbon steel

DIN 17243 C22.8

Cast iron

SG iron

Carbon steel

3

Plug(s)

Stainless steel

BS 970 431 S29

4

Valve seats

Stainless steel

BS 970 431 S29

5

Valve stem

Stainless steel

BS 970 431 S29

Bellows

Stainless steel

AISI 316 L

6

Spacer

Stainless steel

AISI 304

7

Stuffing box gasket

Graphite

8

Lock-nut

Stainless steel

AISI 304

9

Stuffing box

Stainless steel

BS 970 431 S29

10

Mounting nut

Zinc plated steel

NFA 35553 XC 18S

11

Packing

PTFE / graphite

PTFE / graphite

12

Spring

Stainless steel

BS 2056 316 S42

13

Bonnet gasket

Graphite

14

Stud

Carbon steel

A 193 B7M

15

Nut

Carbon steel

A194 Gr. 2H

16

Lock-nut

Stainless steel

AISI 316

17

Guide bush

PTFE

18

Stem guide bush

Stainless steel

Hardened AISI 440B

19

Lock-nut

Stainless steel

AISI 316

20

Pin

Stainless steel

AISI 316

21

Gasket

Graphite

22

Anti-rotation screw

Stainless steel

AISI 304

4.1.73

Type

No.

Part

Material

Material designation

ASTM / DIN STD

Stainless

steel

1

Body

Stainless steel

DIN 17445 1.4581

2

Standard bonnet

Stainless steel

DIN 17445 1.4581

Extended bonnet

Stainless steel

ASTM A182 F316

3

Valve plug

Stainless steel

ASTM A351 CF8M

4

Valve seat

Stainless steel

ASTM A276 316L

5

Valve stem

Stainless steel

ASTM A276 316L

Bellows

Stainless steel

AISI 316 L

6

Spacer

Stainless steel

AISI 316

7

Stuffing box gasket

Stainless steel

AISI 304

8

Lock-nut

Stainless steel

AISI 316

9

Stuffing box

Stainless steel

AISI 316

10

Mounting nut

Zinc plated steel

NFA 35553 XC 18S

11

Packing

PTFE / graphite

PTFE / graphite

12

Spring

Stainless steel

BS 2056 316 S42

13

Bonnet gasket

Graphite

14

Stud

Stainless steel

A 193 B8

15

Nut

Stainless steel

A 194 Gr. 304

16

Lock-nut

Stainless steel

AISI 316

17

Guide bush

PTFE

18

Stem guide bush

Stainless steel

Hard faced AISI 316

19

Lock-nut

Stainless steel

AISI 316

20

Pin

Stainless steel

AISI 316

21

Gasket

Graphite

22

Anti-rotation screw

Stainless steel

AISI 304

Materials

Cast iron, SG iron and carbon steel valves

Stainless steel valves

TI-P359-14 CH Issue 4

QLM and QLD Three-port Control Valves

Page 4 of 8