GVO Series Pneumatic Linear Valve Operators Field-Proven for Safety Shutdown and Control Process Management

Promotes Reliability and Safety Operates a Broad Range of Valves The Bettis GVO Pneumatic Series represents a broad range of field proven linear valve actuators suitable for automating most types of rising stem valves in safety shutdown and control applications. The GVO actuators are manufactured in accordance with strict quality standards and assure reliability and safety in your specific service. This catalog lists standard models intended to cover a wide range of sizing applications. Custom designed models are also available for specialized thrust or stroke requirements, or those beyond the...

GVO Series Features The GVO Series of linear valve actuators incorporates the following features: ■ External tie bars allow contained release of energy in the event of over-pressure and allow ease of inspection and servicing Spring rod nut is locked to prevent unauthorized disassembly of the spring cartridge Adjustable travel stop for the rod-retract position, piston bottoms out for the rod-extend position. Specific travel applications available, consult factory 70 durometer Nitrile seals, other seal materials available upon request Piston wear band, drive rod bushing and polyurethane rod wiper...

Optional Mounting Interface The GVO Series of linear valve actuators incorporates a standard open pedestal valve mounting adaption, or interface. The welded pedestal is manufactured from 2 steel channels and is removable from the actuator. One end of the pedestal is machined for bolting to the GVO actuator and the opposite end can be supplied as a blank to be machined later and fitted to the respective valve at another site. As an option, the pedestal can be custom machined by Bettis, provided that the valve top-works are included with the order. The open pedestal allows for easy visual position...

Manual Jackscrew Override The GVO Series of linear valve actuators are available with a unidirectional manual jackscrew handwheel override (‘-MJ’) for emergency use when plant air or power gas is unavailable. The ‘MJ’ override can also be used to hold the actuator in a particular position. For models where a jackscrew override is not feasible due to high thrust requirements, dimensional clearance or lack of accessibility, a manual hydraulic override is available. Also, the ‘MJ’ override is not available for type ‘SR’ actuators. Hydraulic Manual Override The GVO actuators are also available with...

Optional Accessories The GVO Series of linear valve actuators can be supplied as a basic actuator or can be configured with various control accessories and related features such as: Option for LVDT proximity type continuous position transmitter for current, voltage or resistive feedback with optional discrete (2 X SPST) end position indication, with CSA or ATEX electrical certification Power supply filter and/or pressure regulator and relief valve Solenoid switching valve, AC or DC coil, with CSA, UL or ATEX electrical certification Pneumatic switching relay, volume booster and/or flow control...

GVO-LP-DA (2 to 14 ) Double Acting Linear Actuators, Single Cylinder Power Cylinder Thrust Output in Lbf at Operating Pressure (psig) 50 Typical model number example: 2A063-GVO-LP-DA-MJ Explanation: 2 diameter piston with 2 to 6 stroke range and 0.625 diameter rod, pneumatic double-acting with manual jackscrew override. Notes: 1) Actuator MAWP is 150 psig (10 barg) 2) Thrust values are in Lbf and are de-rated for friction allowance 3) Actuators can be fitted with conventional Bettis swivel connector assembly, as an option 4) Mounting pedestal, where provided, is an open design twin channel type,...

GVO-LP-DA (16 to 24 ) TYPICAL PNEUMATIC DOUBLE ACTING LINEAR ACTUATOR (-DA) MATERIAL SPECIFICATIONS ARE TYPICAL FOR OPERATION AT -23° C TO +74° C (-10° F TO +165° F) ITEM DRIVE ROD CYLINDER PLATE END CAP PISTON CYLINDER STAY ROD PISTON WEAR RING ROD GUIDE GASKET O-RING, PISTON O-RING, DRIVE ROD O-RING, PISTON CENTRE O-RING, STOP COVER WIPER END STOP END STOP COVER NUT, PISTON NUT, STAY ROD LIFT LUG C1045 ASTMA516-70 ASTMA516-70 ASTMA516-70 FIBER COMPOSITE AlSI4140 POLYESTER RESIN REIN. NYLON FIBER NITRILE NITRILE NITRILE NITRILE URETHANE ASTM A193 GR.B7 C12L14 HHXN GR.2H HHXN GR.2H A36 Notes:...

GVO-LP-DA (16 to 24 ) Double Acting Linear Actuators, Single Cylinder Power Cylinder Thrust Output in Lbf at Operating Pressure (psig) 50 Power Cylinder Thrust Output in Lbf at Operating Pressure (psig) 50 Double Acting Linear Actuators, Tandem Cylinder Typical model number example: 16C250-GVO-LP-DA-MH Explanation: 16 diameter piston with 10 to 14 stroke range and 2.50 diameter rod, pneumatic double-acting with manual hydraulic override. Notes: 1) Actuator MAWP is 150 psig (10 barg) 2) Thrust values are in Lbf and are de-rated for friction allowance 3) Actuators can be fitted with conventional...

Model GVO-LP-SR TYPICAL PNEUMATIC SPRING RETURN LINEAR ACTUATOR (-SR) MATERIAL SPECIFICATIONS ARE TYPICAL FOR OPERATION AT -23° C TO +74° C (-10° F TO +165° F) ITEM DRIVE ROD CYLINDER PLATE END CAP PISTON CYLINDER STAY ROD PISTON WEAR RING ROD GUIDE GASKET O-RING, PISTON O-RING, DRIVE ROD O-RING, PISTON CENTRE O-RING, STOP COVER WIPER END STOP END STOP COVER NUT, PISTON NUT, STAY ROD LIFT LUG SPRING SPRING RETAINER SPRING RETAINER ROD SPRING BARREL SPRING RETAINING NUT Notes: (C) CHROME PLATED OR EQUIVALENT (V) QUANTITY MAY VARY DEPENDING ON MODEL (Y) RECOMMENDED SPARE PARTS/REPAIR KIT ALL METAL...

Model GVO-LP-FS TYPICAL PNEUMATIC FAILSAFE LINEAR ACTUATOR (-FS) MATERIAL SPECIFICATIONS ARE TYPICAL FOR OPERATION AT -23° C TO +74° C (-10° F TO +165° F) ITEM DRIVE ROD CYLINDER PLATE END CAP PISTON CYLINDER STAY ROD PISTON WEAR RING ROD GUIDE GASKET O-RING, PISTON O-RING, DRIVE ROD O-RING, PISTON CENTRE O-RING, STOP COVER WIPER END STOP END STOP COVER NUT, PISTON NUT, STAY ROD LIFT LUG SPRING SPRING RETAINER SPRING BARREL SPRING RETAINING NUT Notes: (C) CHROME PLATED OR EQUIVALENT (V) QUANTITY MAY VARY DEPENDING ON MODEL (Y) RECOMMENDED SPARE PARTS/REPAIR KIT ALL METAL PARTS COATED WITH CORROSION...