Technical Specifications Category Specification Model Y690AM Type Pneumatic Spring-Diaphragm Actuator (Specifically, a Piston-Type for Rotary Valves) Action Reverse Action (A) & Double-Acting (M) • Reverse Action: Stem retracts with increasing air signal. • Double-Acting: Requires air pressure to both open and close the valve. It has no spring and is not fail-safe. Standard Air Signal 3 to 15 psig (0.2 to 1.0 bar) Supply Air Pressure Maximum 100 psig (6.9 bar) supply pressure. The actual torque output is directly proportional to the supply pressure used. Travel Standard travel is 90 degrees of rotation, suitable for quarter-turn valves. Mounting Designed for direct mounting to Fisher V100, V150, V500, and other compatible rotary valve series via a standardized bracket. Typical Torque Output The Y690A size provides a specific torque range. For precise torque values at different air pressures, you must consult the official Fisher torque chart. (e.g., With 100 psig air supply, the torque output can be in the range of several hundred lb-in). Diaphragm / Piston Material Nitrile (Buna-N) is standard for elastomers. Housing Material Cast aluminum or ductile iron, with a corrosion-resistant coating. Temperature Limits Standard elastomers are suitable for temperatures between -20° to +180°F (-29° to +82°C).
