Materials

No. Part

1

Nozzle

2

Body

3

Screw

4

Cap

5

Gasket

6

Stem/disc holder

7

O’ring

10 Spring plate

13 Adjusting screw

15 Spring

17 Lever

29 Joint

Material

SV405

SV405P

SV405X

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

SV406

33 Ring-pull

* ELNP = Electroless nickel plated

4.7.3

33

29

4

13

15

10

2

6

2

6

Stainless steel 304

Stainless steel 316

Brass EN 121640 CW617N

Stainless steel 1.4409

Stainless steel, A4

Brass EN 121640 CW617N

Brass EN 121640 CW617N, ELNP *

PTFE

Stainless steel, X20 Cr Ni 17

Viton, FPM 75

Stainless steel, ASTM A276 304

Stainless steel, ASTM A276 304

Stainless steel, 1.4310

Stainless steel, 304

Brass EN 121640 CW617N

Brass EN 121640 CW617N, ELNP *

Spring steel

4

15

10

D

C

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

7

7

3

5

1

B

3

5

1

Unit

A

SV405, SV405X and SV406

37

SV405P

37

B

50.7

50.7

C

137.7

116.7

D

Orifice

152.7

8

126.0

8

Lift

2

2

Weight

0.75

0.70

TI-P257-01 CH Issue 8

SV405, SV405X and SV406 Safety Valves

Page 2 of 3

SV405P

SV405, SV406 and SV405X

Dimensions, orifice, lift and weight

(approximate) in mm and kg

Control valves

Safety valves

A

A

17

D

B

C