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RGS F-Series

RGS F-Series

Product catalog summary

Overview: The Bettis RGS F-Series features quarter-turn pneumatic actuators available in spring-return (SR) and double-acting (DA) models. These actuators are designed for high cycle life, speed, and reliability, with output torques up to 500,000 in-lb (56,492 N∙m). Constructed from ductile iron or stainless steel, they operate in temperatures from -60°F to 450°F (-51°C to 232°C).

Operation and Piping: Actuators can be powered by various fluids, including instrument air and hydraulic fluid. They are shipped in a Fail-Close or Left-Hand orientation but can be reversed in the field. Operation modes include Fail-Close, Fail-Open, and Double-Acting, each with specific pressure port configurations for rotation control.

Piping Guidelines: Proper operation requires simultaneous pressurization of specific ports. For DA models, both base plate pressure ports must be pressurized, while SR models have different requirements. Breather ports should be fitted with strainers on SR models.

Dimension and Technical Data: Detailed dimensions are provided in both imperial and metric units, including mounting patterns, NAMUR dimensions, and drive dimensions. Information on air volume, port sizes, maximum rated torque, and pressure limits is included.

Pressure Equipment Directive (PED) Category: The document outlines the PED category determination for the actuators, ensuring compliance with safety standards.

Output Torque Data: Detailed torque data is provided for both DA and SR models in imperial and metric units, highlighting the maximum torque capabilities of each model.

Parts Diagram and Materials: Diagrams and material specifications are provided for both DA and SR models, detailing the construction and components of the actuators.

Model Number Matrix: A matrix is included to help identify specific actuator models based on their features and specifications.

Specifications: Performance data for different actuator models is provided, including start, minimum, and end values for various parameters. Materials used for each component are outlined, with options for stainless steel and ductile iron, and notes on corrosion resistance and material upgrades.

Materials of Construction: A detailed parts diagram lists each component's material, with options for different stainless steel grades and ductile iron. Special coatings and treatments are available for enhanced durability.

Model Number Matrix: The matrix explains the coding for actuator models, detailing material, action type, temperature range, port size, orientation, manual override, and cylinder options. It provides a comprehensive guide to customizing actuators based on specific requirements.

Notes: The document emphasizes the importance of material compatibility with application requirements and provides guidance on environmental temperature considerations and grease selection.

Contact Information: Contact details for Emerson's World Area Configuration Centers are listed, offering global sales support and service.

Catalog excerpts

Product Data Sheet Quarter-Turn Spring-Return (SR) and Double-Acting (DA) Pneumatic Actuators Output Torques to 500,000 in-lb (56,492 N-m) Ductile Iron or Stainless-Steel Construction Double-Acting and Spring-Return Models High Cycle Life, High Speed, High Reliability BETTIS" EMERSON. Process Management

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Product Data Sheet

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Product Data Sheet RGS011110-4 Rev. 0 Operation and Piping Bettis RGS F-Series actuators may be operated with instrument air, hydraulic fluid, water, or other power gases and fluids. Always ensure that the materials of construction are compatible with the application and that the pressure does not exceed the maximum allowable. All Bettis actuators are shipped in the Fail-Close or Left-Hand orientation unless ordered as Fail-Open or Right-Hand. The mode of operation may be reversed in the field simply by turning the actuator top-side down. 1. Fail-Close (Left-Hand): pressure on the end cap port(s)...

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Product Data Sheet Piping Guidelines 1. Both end cap pressure ports P1 and P2 must be pressurized simultaneously for proper operation. 2. Pressure ports P1 and P2 are typically connected together and powered by a single air pathway. 3. For all Double-Acting (DA) models, both base plate pressure ports P3 and P4 must be pressurized simultaneously for proper operation. These ports are not present on Spring-Return (SR) models.

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Product Data Sheet 4. Pressure ports P3 and P4 are typically connected together and powered by a single pathway. Body ports P5 and P6 (shown in dimensional drawing on page 6) are breather ports which should be fitted with a strainer on SR models and may be plugged on DA models.

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Product Data Sheet Dimension and Technical Data B1

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Product Data Sheet QTRCO F2-SERIES QUARTER TURN PNEUMATIC MOUNTING DIMENSIONS DIMENSIONS BELOW FOR DOUBLE ACTING MODELS ONLY

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Product Data Sheet Dimension and Technical Data (Imperial, Inches) ENVELOPE DIMENSIONS Width Total Width Cylinder Height Cylinder Length Total Flange Distance Flange Depth Body Depth Stop Extension Maint. Clearance Maint. Clearance MOUNTING PATTERN Pattern X Thread Type Thread Depth NAMUR PATTERN Length Slot Width Slot Depth Thread Depth The namur slotted drive can be moved to the opposite side for field reversibility.

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Product Data Sheet DRIVE DIMENSIONS Shaft Bore Shafts have two keyways 90 degrees apart. Only one keyway is required to transmit torque. Max engagement shown with top hat. Removal of top hat allows shaft to extend through the actuator bore. Body Side Stroke time varies with supply pressure, temperature, spring rate, travel adjustment, working medium, and valve torque. Values shown with no valve resistance. Contact factory about faster stroke speed. Max Rated Torque (in-lb) Environmental temperature requirements may limit the use of certain trim materials. Temperature ranges may be extended with...

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Product Data Sheet ENVELOPE DIMENSIONS Width Total Width Cylinder Height Cylinder Length Total Flange Distance Flange Depth Body Depth Stop Extension Maint. Clearance Maint. Clearance MOUNTING PATTERN Pattern X Thread Type Thread Depth NAMUR PATTERN Length Slot Width Slot Depth Thread Depth The namur slotted drive can be moved to the opposite side for field reversibility.

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Product Data Sheet DRIVE DIMENSIONS Shaft Bore Shafts have two keyways 90 degrees apart. Only one keyway is required to transmit torque. Max engagement shown with top hat. Removal of top hat allows shaft to extend through the actuator bore. Body Side Stroke time varies with supply pressure, temperature, spring rate, travel adjustment, working medium, and valve torque. Values shown with no valve resistance. Contact factory about faster stroke speed. Environmental temperature requirements may limit the use of certain trim materials. Temperature ranges may be extended with proper insulation. Ductile...

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Product Data Sheet Dimension and Technical Data (Metric, Millimeters) ENVELOPE DIMENSIONS Width Total Width Cylinder Height Cylinder Length Total Flange Distance Flange Depth Body Depth Stop Extension Maint. Clearance Maint. Clearance Thread Type Thread Depth MOUNTING PATTERN NAMUR PATTERN Length Slot Width Slot Depth Thread Depth The namur slotted drive can be moved to the opposite side for field reversibility.

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Product Data Sheet DRIVE DIMENSIONS Shaft Bore Shafts have two keyways 90 degrees apart. Only one keyway is required to transmit torque. Max engagement shown with top hat. Removal of top hat allows shaft to extend through the actuator bore. Body Side Stroke time varies with supply pressure, temperature, spring rate, travel adjustment, working medium, and valve torque. Values shown with no valve resistance. Contact factory about faster stroke speed. Environmental temperature requirements may limit the use of certain trim materials. Temperature ranges may be extended with proper insulation. Ductile...

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Product Data Sheet DRIVE DIMENSIONS Shaft Bore Shafts have two keyways 90 degrees apart. Only one keyway is required to transmit torque. Max engagement shown with top hat. Removal of top hat allows shaft to extend through the actuator bore. Body Side Stroke time varies with supply pressure, temperature, spring rate, travel adjustment, working medium, and valve torque. Values shown with no valve resistance. Contact factory about faster stroke speed. Environmental temperature requirements may limit the use of certain trim materials. Temperature ranges may be extended with proper insulation. Ductile...

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Product Data Sheet Pressure Equipment Directive (PED) Category Determination The European Pressure Equipment Directive (PED, 2014/68/EU, supersedes 97/23/EC) requires equipment to be placed in categories based on Fluid Group and Bar Liter rating. Determination of Fluid Group is the responsibility of the End User. Bettis RGS F-Series actuator ratings are listed below: MODEL CATEGORY Fluid Group 2

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