Key Parameters & Specifications Product Line: Bettis™ EB Series Type: Pneumatic Scotch-Yoke Actuator Model: EB-203 (Specific size and torque rating) Configuration: 00-000 (Standard configuration without options) Action: Spring-Return (Fail-Safe) - Spring-to-Close or Spring-to-Open (specify) Torque Output: Model 203 - specific torque range (consult torque charts) Mounting: ISO 5211 mounting interface for direct valve mounting Temperature Range: Standard: -20°F to 180°F (-29°C to 80°C) Pressure Rating: 40 to 120 psi (2.8 to 8.3 bar) standard supply pressure Supply Medium: Clean, dry, non-corrosive compressed air or natural gas Housing Material: Ductile iron with epoxy coating for corrosion resistance Yoke Material: High-strength ductile iron Spring Cartridge: Modular spring cartridge for easy torque adjustment Key Features Scotch-Yoke Mechanism: High torque output with linear torque curve matching valve requirements Modular Design: Easy maintenance and field conversion Spring-Return: Reliable fail-safe operation on loss of supply pressure Adjustable Stroke Stops: Allows precise valve positioning Corrosion Protection: Epoxy-coated ductile iron for harsh environments Double-Acting Option: Can be converted to double-acting if required Travel Stops: Standard in both open and close directions Typical Applications Oil and Gas: Pipeline valves, wellhead control panels Chemical Processing: Emergency shutdown valves, on-off control Power Generation: Cooling water systems, fuel handling Water Treatment: Isolation valves, control valves Refining: Process valve automation Marine: Ballast systems, fuel transfer Specifications Details Parameter Value Actuator Type Scotch-yoke, spring-return Supply Pressure 40-120 psi (2.8-8.3 bar) Temperature Range -20°F to 180°F (-29°C to 80°C) standard Rotation 90° ±5° (quarter-turn) Torque Model-specific (consult data sheet) Housing Material Ductile iron with epoxy coating Mounting ISO 5211 Spring Range Multiple spring cartridges available Options Positioners, limit switches, solenoid valves Approvals ATEX, IECEx, CSA (depending on options)