No

Part name

Cast steel

Stainless steel

1

Body

Refer to page 5 Shell materials

2

Cap

3

Ball

A 351 Gr. CF 8M

4

Stem

A 276 Gr. 316

5

Back Seat

Grafoil

6

Antistatic Device

Stainless Steel

7

O-Ring

Viton or HSN

8

Gland Packing

Grafoil

9

Gland Ring

Same as Stem material

10

Gland Flange(Locking Device)

CF8M & 316SS

11

Stopper

A 105 + Zn plating

12

Gland Bolt

A307 Gr. B

A193 B8

13

Snap Ring

Tool steel + Cr plating

14

Lever

Ductile iron

15

Seat Ring

Refer to page 5 Seal materials

16

Gasket

Refer to page 5 Gasket materials

17

Stud Bolt

Refer to Page 22 Bolt & Nut Materials

18

Nut