Key Parameters (English) The following are typical technical parameters for the Fisher 670 Actuator. Category Parameter Description / Typical Values Actuator Type Type Pneumatic Spring-and-Diaphragm (or Double-Acting Piston). Action Direct (Air-to-Close), Reverse (Air-to-Open), Double-Acting. Performance Diaphragm Size Multiple sizes available (e.g., 230, 350, 550 sq. in. effective area). Spring Ranges Multiple spring ranges available to provide the required torque for the application. Standard Air Supply 30 psig (2.1 bar) for benchset. Max supply typically 100 psig (7 bar). Output Torque High torque output, varying with diaphragm size, spring range, and air supply. Environmental Operating Temperature Standard: -20°F to +150°F (-29°C to +66°C). High-temperature options available. Materials Housing Aluminum with corrosion-resistant coating. Internals Steel, Stainless Steel. Accessories Positioner Mounting Designed for direct mounting of Fisher positioners (e.g., DVC6000, 3582). Other Accessories Limit switches, solenoid valves, air filter regulators, etc.
