The Series F1S–E6S Floating Side Entry Ball Valves from QUEST Flow Controls deliver superior quality and proven reliability. Manufactured in ISO 9001 & ISO 14001 certified facilities, these valves are designed in accordance with ASME B16.34, API 6D, API 608, and ISO 17292, with every valve fully pressure tested and serialized.
- Robust two-piece cast body with ASME B16.5 raised-face serrated flanges and corrosion-resistant paint for extended outdoor service
- Precision-machined floating ball with mirror finish ensures bubble-tight shutoff, low torque, and balanced cavity pressure for improved safety
- Contoured, preloaded seats eliminate seat extrusion and ensure stable sealing at low pressure, vacuum, and full-rated pressure
- SUPR proprietary seat material rated up to 500°F (260°C) with excellent chemical, thermal, and mechanical resistance and lower permeability than standard PTFE
- Blowout-proof stem with integral collar design and heavy-duty construction in double "D" or round keyed configuration
- Live-loaded gland with Belleville springs ensures continuous compression, maintenance-free sealing, and excellent fugitive emission control
- Fire-safe certified to API 607 and API 6FA with secondary metal-to-metal sealing for tight shutoff even after soft seat destruction
- Dual antistatic grounding system from stem to ball and stem to body prevents static charge buildup
- ISO 5211 integral top flange enables direct actuator mounting with accessible gland bolt adjustment
- Safety trigger handle with padlock capability and integrated 90° travel stops prevent accidental or unauthorized operation
