TEMPERATURE LIMITS:
-20 deg C +175 deg C (PTFE)
-20 deg C +180 deg C (PTFE + CARBOGRAPHITE)
STEM: Antiblow out
OPERATOR: lever. Available colours: black, yellow.
UPPER SEAL: TRIPLE stem-packing with labyrinth effect and automatic adjustment by Belleville washers.
TESTED FOR VACUUM: (800 mbar)