Needle / Stem Seal Material
| Material |
Temperature |
| Min. |
Max. |
| FKM |
-13°F (-25°C) |
392°F (200°C) |
| FKM (RGD resistant) |
-40°F (-40°C) |
450°F (232°C) |
| FEPM |
-4°F (-20°C) |
392°F (200°C) |
|
PTFE
|
-67°F (-55°C) |
450°F (232°C) |
Low Temperature Service down to -55°C (-67°F) –
As standard for Valves with PTFE Packing and Soft
Seats in ETFE resp. PCTFE only.
Temperature Limit for Body Material:
- Carbon Steel A105: -20°F (-29°C)
- Carbon Steel LF2: -51°F (-46°C)
All other materials are limited by soft goods.
