| Subject/Item |
Design and Material Requirement |
Material |
MDS |
EDS |
| BODY/BONNET |
Straight pattern, bolted |
A182 F44 |
R14 |
|
| INSIDE TRIM |
|
|
|
|
| PORT |
Reduced bore |
|
|
|
| STEM |
Rising stem. Outside screw and yoke |
A182 F44 |
R14 |
NIP1 |
| CLOSURE MEMBER |
Disc: 0.5" - 1" = swivelling needle, 1.5" = swivelling plug; For sizes 6" and below, use material type 6Mo or Nickel alloy 625, both with hardfacing |
A182 F44 |
R14 |
NHF6 |
| SEAT |
For sizes 6" and below, use material type 6Mo or Nickel alloy 625, both with hardfacing |
A182 F44 |
R14 |
NHF6 |
| SEALS |
Lip seal or packed gland (PTFE based); Material according to EDS |
|
|
NSM1 |
| STEM PACKING |
|
PTFE BASED |
|
|
| OUTSIDE TRIM |
|
|
|
|
| BOLTING |
Material according to EDS |
|
|
NBO2 |
| HANDWHEEL |
|
AISI 316 AISI 304 |
|
|
| SPECIAL REQUIREMENTS |
Wetted parts suitable for sour service to NACE MR0175 |
|
|
|