| Subject/Item |
Design and Material Requirement |
Material |
MDS |
EDS |
| BODY/BONNET |
Straight pattern, bolted |
B381 F2 |
T01 |
|
| INSIDE TRIM |
|
|
|
|
| PORT |
Reduced bore |
|
|
|
| STEM |
Rising stem. Outside screw and yoke; To achieve hardness/strength use a combination of gr. 2 and 5 materials, or hardfacing by nitriding |
B348 |
|
|
| CLOSURE MEMBER |
Disc: 0.5" - 1" = swivelling needle, 1.5" = swivelling plug; To achieve hardness/strength use a combination of gr. 2 and 5 materials, or hardfacing by nitriding |
B381 |
|
|
| SEAT |
To achieve hardness/strength use a combination of gr. 2 and 5 materials, or hardfacing by nitriding |
B381 |
|
|
| SEALS |
Packed gland |
|
|
|
| STEM PACKING |
Expanded graphite not less than 98% purity |
|
|
|
| OUTSIDE TRIM |
|
|
|
|
| BOLTING |
Material according to EDS |
|
|
NBO2 |
| HANDWHEEL |
|
AISI 316 AISI 304 |
|
|
| SPECIAL REQUIREMENTS |
|
|
|
|