The only one valve suitable for continuous service with temperatures:
from -101 °C (-150 °F)
up to 550 °C (1022 °F)

FIRE SAFE according:
API 6FA Second Edition 15.02.94, API 607 Fourth EditionBS 6775 part 2 and Appendix A

TA-Luft according:
Technical Instruction on Air Quality Control Nr. 3.1.8.4

German I.Allgemeine VwV  zum Bundes-Immissionsschutzgesetz (BlmSchG)

BONETTI  Low & High Temperature and High Pressure Ball Valves (BONT HTB) incorporate a "semi-soft" seat design made of metal/graphite compounds. This tried and well proven design offer several advantages over metal-to-metal seats:

• Perfect seat tightness under working conditions
• Long seat life
• Continuous cleaning of the ball surface due to the wiping action of the seat material
• Low operating torque even when compared to valves with PTFE seats
• Suitable for use in any application where pure graphite is permitted. The metal portion of the seat can be changed to accommodate any application requirements
• Long life maintenance free for a minimum of 30,000 cycles
• Low cost
• Full bore, three piece design body design

Connections: Threaded NPT ASME B2.1
SW ASME B16.11 - BW ASME B16.25 - BW DIN 3229
Flanged according European Stds (UNI, DIN, AFNOR, etc.)
Flanged according to American Stds (ASME B16.5 - B16.10)