Bill of Materials |
Sl No. |
Component/Body |
Basic |
Alternative |
|
|
Material |
Ref to IS No. |
Grade or Designation |
Material |
Ref to IS No. |
Grade of Designation |
i ) |
Body, Cover, Valve Disk, Stuffing Box, Valve Guide, Cowl, Gland,
Cap, Joint Support Ring |
Grey Cast Iron |
210 |
FG 200 |
- |
- |
|
ii ) |
Stem |
High Tenslate Brass |
320 |
HTB 1 or HTB 2 |
Stainless Steel |
6603 |
O4 Cr 17 Ni 12 Mo 2 O4 Cr 18 Ni 10 12Cr 13 |
iii ) |
Low Pressure Seat Ring and Face Ring |
Natural Rubber |
11855 |
- |
EPDM Nitrile Rubber |
- |
|
iv ) |
High Pressure Orifice |
Leaded Tin Bronze |
318 |
LTB - 2 |
High Tensile Brass Stainless Steel |
320
6603 |
HTB2
O4 Cr 18 Ni 10 |
v ) |
Stem Nut |
Leaded Tin Bronze |
318 |
LTB - 2 |
High Tensile Brass |
320 |
HTB 2 |
vi ) |
Body Seat Ring |
Leaded Tin Bronze |
318 |
LTB - 2 |
Stainless Steel |
3444 |
Grade 1 |
vii ) |
Bolts |
Carbon Steel |
1363 |
Class 4.6 |
Stainless Steel |
6603 |
- |
viii ) |
Nuts |
Carbon Steel |
1363 |
Class 4 |
Stainless Steel |
6603 |
- |
ix ) |
Gasket |
Rubber |
638 |
Type B |
- |
- |
- |
x ) |
Gland Packing |
Juit / Hemp |
5414 |
Type III |
- |
- |
- |
xi ) |
Float (Low Pressure Orifice) |
Timber Core With Vulcanite Coating |
- |
- |
- |
- |
- |
xii ) |
Float (High Pressure Orifice) |
Timber Core With Rubber Coating |
- |
- |
Stainless Steel |
3444 |
- |
xiii ) |
Float Guide |
Leaded Tin Bronze |
318 |
LTB - 2 |
High Tensile Brass |
320 |
HTB 1 |