PA Series Pneumatic Actuators for Elastomer Seated Butterfly Valves (Double Acting and Spring Return)



(Double Acting and Spring Return) for Elastomer Seated Butterfly Valves

Actuators listed are for elastomer seated Type 57P/56/75 butterfly valves in the fail closed position. For fail open, consult JJD.  Actuators are sized for “Normal” service. For gas, vapour, or severe chemical service, consult JJD.  For actuation of other than listed valves or for pressures not listed, consult JJD.

PA Series – Coated Aluminum Body

PA Series actuators are rack and pinion (rotary) type. They feature high corrosion resistance, long cycling life and ISO/NAMUR dimensions. Aluminum body and end caps are coated inside and outside with epoxy using a special cataphoresis process, then with Rilsan Nylon 99. Shaft and threaded inserts are 303 SS. Mounting bolt circle conforms to ISO. Actuators accept NAMUR standard limit switches and pad mount solenoid valves directly.

ASAHI PA Series is part of the P Series family of quarter-turn pneumatic rack and pinion actuators designed for long cycling life in demanding industrial applications.  PA Series features aluminum bodies and end caps coated inside and out with a two part coating of cataphoresis epoxy then Rilsan polyamide. The result is a superior actuator with longer cycling life and durable abrasion and corrosion resistant surfaces. Output torques are up to 15,660 in.-lbs. spring return (SR) and 40,660 in-lbs. double acting(DA) with 80 psi control air. They will power all ASAHI ball valves and butterfly valves up to 24” DA and 20” SR.  ASAHI offers complete actuated ball and butterfly valves assembled and bench tested. Actuation services are also available for all quarter-turn metal valves.


Application Diversity

• Industrial Process
• Submersion
• Bleach or water washdown

Quality Built for Long Cycling Life

• Rated for over 1 million cycles
• Self-lubricating Rilsan® coating on inner cylinder surfaces for better wear than epoxy or anodizing
• Molybdenum grease-impregnated O-rings
• PTFE impregnated piston wear pads and wear rings
• Double O-ring shaft seals
• Minimum backlash with no play between parts
• Massive tooth engagement between racks and pinion

Corrosion Resistant

• Silicone-free aluminum alloy body and end caps
• 4-step pre-treatment process
• Cataphoresis layer for extra protection
• Self-lubricating Rilsan® coating2 offers outstanding chemical and abrasion resistance

Standard Mounting Dimensions

• ISO 5211 bottom bolt circles and drives allow direct mounting to most valves
• NAMUR solenoid pad and VDI/VDE 3845 top shaft allow for mounting of all standardized accessories
• Standardized actuator mounting kits are available for many valve makes

Compact, Simple Design

• Dual-opposed rack and pinion design supplies high torque for its size and weight
• Air porting is integral, keeps design clean and simple

Integrated Travel Stops

• Permit adjustment of last 5 degrees of either open or closed position travel

Safety Spring Set

• Prevent dangerous release of spring tension during disassembly