Biffi ALGA/ALGAS/ALGAS-QA
Biffi ALGA/ALGAS/ALGAS-QA are double acting and spring return pneumatic quarter turn actuators for on-off and modulating control of valves in heavy duty service. Available for output torques to 750,000 Nm.
| Design pressure (MAWP) | up to 12 barg |
| Supply medium | Air, nitrogen or sweet gas (Sour gas version available) |
| Output torque ALGA | Double-Acting torque up to 1000000 Nm |
| Output torque ALGAS/ALGAS-QA | Spring starting torque up to 335000 Nm |
| Ambient temperature standard range | -20 to +100 °C / -4 to +210 °F |
| Extended temperature | -60 to +135 °C / -70 to +275 °F |
| Safety Integrity Level (IEC 61508-1÷7:2010) | SIL 3 |
| Area Classification (ATEX) | II 2GD |
| Enclosure standards (IEC 60529) | IP66, IP66M, IP67M |
| Enclosure standards (ANSI/NEMA 250) | NEMA 4, 4X, 6 |
| Pressure Equipment Directive | 2014/68/EU |
| Machinery Directive | 2006/42/EC |
- Totally enclosed, weatherproof housing in fabricated carbon steel for maximum strength.
- Guide bar resists transverse loads and supports the piston rod.
- Hard chromium plated alloy steel material guarantees corrosion protection and minimal friction.
- PTFE-impregnated bronze or sintered bronze bushings provide minimal friction and extended service life.
- Scotch yoke design with canted or symmetric torque arm allows close working to distinctive valve torque profiles.
- External travel stops for precise angular stroke adjustment 90° +/- 4° at each end of travel.
- Electroless nickel plated and polished cylinder provides maximum corrosion resistance and reduces friction.
- Floating type piston seals provide low hysteresis and high sensitivity, preventing sticking problems.
- ALGAS Spring-Return pack incorporates up to four springs, fully encapsulated in a factory welded cartridge ensuring personnel safety and simplifying assembly.
- ALGAS spring action can be changed easily in the field from to close to open or vice versa.
- Special coatings for offshore or corrosive environments
Askalon AB, filial i Finland
Hiekkamäentie 11
FI-01150 Sipoo
Finland
Phone. 020 741 6200
Email: sales@askalon.fi
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