Compact - One of the Smallest Rack & Pinion Pneumatic Actuators in the Marketplace

Made In The U.S.A. - One of the Last U.S. Manufacturers Still Able to be Price Competetive Against Foreign Import Models

Reliable, Long Lasting Performance

Lightweight Aluminum Body Construction featuring Teflon® Impregnated Hard Anodized Polylube® Surfaces

Standard 'In Line' or 'Cross Mount' Valve to Actuator Configurations

Spring-Return Design Accommodates Air Supply as Low as 50 psi

Stainless Steel External Trim & Viton® O-rings Standard

Direct Valve Stem Coupling to Actuator Shaft Minimizes Backlash

Manual Override Standard

Available with Integral NAMUR Pilot Valve or can be Remotely Piloted

Available with Limit Switches

Optional ISO 5211.2 FO3 & F05 Valve Mounting & NAMUR VDI/VDE 3845 Accessory Mounting Brackets Available

The A500 Series pneumatic actuators offer the latest technology from Gemini Valve for pneumatically actuating our 76, 86, 96 & 309 Series ball valves. As with our previous models, we are combining the three key elements for long, reliable, trouble free life - a premium quality ball valve, a quality actuator designed to meet the torque requirements of the valve, and a mounting system which assures alignment and rigidity.

Gemini Ball Valves' low operating torque makes possible a compact actuator that is both economical to install and operate. Precise machining of all the valve components, including the seats, controls the sealing preload. This assures bubble-tight sealing, minimizes the operating torque and optimizes the valve life.

The A500 Series Actuators represents the combination of the latest in machining technology and our more than twenty-five years experience in producing high performance pneumatic actuators. The precision and durability of our simple, efficient rack and pinion design is made possible though our unique manufacturing techniques. This results in a compact ball valve actuator that is extremely energy efficient and virtually trouble free.

Our mounting system precisely couples the actuator drive shaft to the valve stem. Additionally, the valve stem nut is fixed within the actuator shaft. These features combined with a rigid mounting bracket, results in a pneumatically actuated ball valve which minimizes backlash, assures optimum stem seal life and eliminates any possibility of stem nut backing off while in service.

The A500 Series offers a spring-return model requiring only 50 psi supply air that can spring to open or close without loss of output torque from the air operated side. This is achieved by two opposing light weight Zytel housed spring modules that are fully compressed by air operated diaphragm pistons.

All 500 Series are designed to operate using an air supply of 50 - 125 psi. The air can be delivered by direct mounting pilot valves having NAMUR interfaces or from remote pilot valves connected via means of 1/8" NPT female threaded orifices in the actuator face plates. Gemini Valve 3 GP Series 3-way & 4GP Series 4-way solenoid operated pilot valves are available for mating to our NAMUR interface mounting.

Special brackets and pinion shaft extensions are available for mounting the Gemini Valve LS-1 limit switch assemblies, as well as, auxiliary equipment, such as positioners and signal transmitters, requiring NAMUR standard interface mounting compatibility.

A500 Series Actuators are also available with ISO 5211.2 F03 and F05 mounting configurations. Actuators with ISO 5211 mounting configurations have special pinion shafts installed at the factory and therefore, are not interchangeable with units mounting onto our ball valves.

Caution: Care must be taken to assure that the output torque of the A500 Series Actuator selected is adequate to turn the valve or device to be operated.