1 G-Series Pneumatic and Hydraulic Actuators The Compact, Lightweight and Reliable Solution G-Series: A New Generation of Actuators Compact Lightweight Efficient Reliable Key Features Operating Ranges Torque Outputs (guaranteed). Symmetric or Double-acting: 12,581-6,000,000 lb-in (1420 678,000 Nm). Canted Yoke Spring-return end torques : In excess of 3,000,000 lb-in (339,000 Nm). Modular Design Operating Pressures Pneumatic: 40-200 PSIG (3-14 BAR). PED 97/23/EC Hydraulic: To 5000 PSIG (345 BAR). Compliant Operating Temperatures SIL 3 Suitability Standard: -20 F to +200 F (-29 C to +93 C).
2 Optional Trims: ATEX Certified High Temperature (-10 trim): 0 F to +350 F (-18 C to +177 C). Water Ingress Low Temperature (-11 trim): -40 F to +150 F (-40 C to + 66 C). Protected High Cycle Standard Temperature (-33 trim): -20 F to +200 F (-29 C to +93 C). Non PED Low Temperature : Five-Year Warranty Pneumatic: -50 F to +180 F (-46 C to +82 C). Hydraulic: -50 F to +200 F (-46 C to +93 C). Bettis G-Series Robotarm II Benefits valve actuators from Emerson Created with its users' interest in mind, the G-Series actuators offer many significant benefits.
3 Process Management Among these are: represent the high quality Compact G-Series actuators Wear Resistant The Powr- and ingenuity operators have optimize the center of gravity Swivl piston rod and guide come to expect from Bettis location. They are significantly block connection, superior sur- products since pioneering lighter and require less space face finishes and self-lubricating than do other actuators of equal bearings maximize input energy actuator technology more or less torque output approxi- transfer directly to the valve than 50 years ago.
4 Mately 1/3 lighter and 1/3 smaller. stem. Efficiency is further The G-Series provide a highly enhanced by the tension-loaded Water Ingress Protected spring, minimizing radial loads unique and reliable means of G-Series actuators meet both IP on the piston rod. operating ball, butterfly or 66 and IP 67M specifications for plug valves as well as louvers, submergence and severe high Corrosion Resistant With pressure water deluge test. The protective internal and external dampers and other 90 degree actuator has no gaskets and is coatings, the G-Series performs rotating mechanisms.
5 Totally o-ring sealed. reliably in harsh environments, as confirmed by salt spray tests per ASTM B117 criteria. 2. Symmetric or Canted Yoke Safety The patented Tension- Standardized The shaft driven accessory inter- G-Series actuators, with their Lok allows the safe installation face conforms to NAMUR and is identical on all G- scotch yoke design, are available and removal of the spring module Series models, allowing standardization of accessory with either symmetric or canted in a manner that eliminates mounting hardware and installation practices.
6 Yokes, depending on break accidental release of the spring torque requirements. force and reduces potential for Versatile The G-Series actuator power and spring incorrect installation, operation modules can interchange easily, allowing for quick Modular Design G-Series or misapplication of a reconfig- reversal of the fail-safe mode, while allowing the actuators have available, field- ured actuator . addition of overrides, accessories and other modules serviceable drive, power, spring (See page 8 for further details).
7 And override modules. The mod- Industry Leading Warranty ules are removable, serviceable G-Series actuators are backed MSS or ISO Valve Mounting The G-Series valve and interchangeable while by a five year materials and interface meets the dimensional requirements of mounted to the valve. Modules workmanship warranty the MSS SP-101 or ISO 5211 defined for each torque are available for separate purchase industry's best. range. to reduce spare parts inventory (See page 8 for further details). 3. Design Features Offer Unique Benefits 14 Pressure Port 3 Acculine TM.
8 7 Yoke Pin 1 Safe Spring Lock Positive Sealing Thrust Bar Mechanism Tension-Lok . positively locks the spring module 11 Breather 4 NAMUR. in place under load. Prevents spring 2 Power-Swivl TM.. module detachment from the drive Reduces Wear module unless it is taken to a safe condition. 2 Reduced Wear Powr-Swivl . connects the piston rod with the guide block, compensating for side load deflection and reducing wear on rod, bearings and seals (not available in G1 models). 3 Positive Yoke Seal . Acculine shaft drive assures a positive yoke seal, maintains and eliminates accessory shaft side loads which helps maintain device integrity and prevents unintentional disen- gagement of critical signal devices or controls.
9 4 Standardized Mounting . The NAMUR mounting configuration 15 Bi-directional 5 Replaceable allows standardization of mounting Travel Stops Bearings hardware for a wide range of shaft- driven accessories. 16 Dual Internal Tie 13 Vent Checks 12 actuator /. Bars Promotes Valve Interface 5 Replaceable Bearings Corrosion Resistance Protect sliding and rotating components, with suitability for either dry or lubricated working 9 Corrosion Resistant Spring Module Guided by self-lubricating conditions. alignment bearings.
10 Fully enclosed and supporting Tension-Lok, prevents potential operating personnel injury or equipment damage. Corrosion 6 Better Alignment Guide Block Thrust Bushing resistant to harshest environments. aligns the guide block within the yoke arms to enhance the Powr-Swivl function. 10 Easy Lifting G4 and larger models equipped with eight lifting eyes for safe actuator handling in three major planes during shipping, installation 7 Reduced Axial Movement Non-metallic thrust and removal. bar prevents yoke pin axial movement, transferring axial loads directly to the drive module case.