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Biffi ALGA/ALGAS/ALGAS-QA

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Jani Collan
Key Account Manager
Mob. 040 702 8711

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.

Bettis

Tekniset tiedot
Ominaisuudet

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

Brands

Biffi ALGA/ALGAS/ALGAS-QA

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