The Keystone F89 is a pneumatic quarter-turn actuator for general purpose and hazardous area applications. The F89 is designed for simple, safe use and ultimate realiability, meeting EN15714-3 requirements and has been validated to 500,000 cycles under specified conditions.
Keystone F89 Pneumatic Quarter-Turn Actuator
Up to 8.3 bar
`-40°C to 150°C
Direct mounting to all Keystone butterfly valves and ball valves.
Valve connection compatible with Keystone (imperial and metric) and ISO 5211
Double Rack and Pinion design nullifies side loads on the pinion shaft, minimizing bearing wear and extending life.
Optimized product flow with standard mounted travel stops for valve position adjustment in open and close position (+/- 5� at each end).
Anodized aluminum body with electrostatic powder coating (ESPC) finish provides durable protection against corrosive environments.
Double acting and spring return versions available for cost effective and safe operation.
Up to 12 individual springs offer flexible torque range for both ball as butterfly valves.
Pre-compressed spring design and anti-blowout drive pinion means safe maintenance and operation.