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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 PCTFE only.

Temperature Limit for Body Material:
- Carbon Steel LF2: -51°F (-46°C)
- Brass: 14°F (-10°C)
All other materials are limited by soft goods.
Max. Operating Pressure for Brass Type 3,000 psi (206.80 bar)

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