Features;
Compact, Lightweight Aluminum Body and Bracket featuring both Internal and External Teflon-Impregnated Hard Anodized Surfaces
Stainless Steel External Trim & Viton O-rings Standard
Direct Valve Stem Coupling to Actuator Shaft Minimizes Backlash
Manual Override
Easily Visible Open / Shut Position Read Out

Click to Enlarge Chart

Gemini© Pneumatically Actuated Ball Valves offer a unique combination of three elements required for long trouble free life - a premium quality ball valve, a quality actuator designed to meet the torque requirements of the valve and a mounting bracket and connection which assures alignment and rigidity.

Gemini© Pneumatic Actuatorís simple rack and pinion design, made possible through unique manufacturing techniques, results in a bar stock actuator which is compact, efficient and trouble free.

All actuators are factory lubricated so that there is no need for lubricated air.

All threaded bolt holes in the aluminum components have self locking stainless steel inserts to assure strong, positive fastening.

Gemini© Actuator mounting is the key element of our pneumatically actuated ball valves. A good valve and actuator, poorly mounted, results in an inferior actuated valve. The Gemini coupling eliminates this possibility with the ëmissing linkí i.e., the actuator shaft is precisely coupled directly to the valve stem, thereby eliminating misalignment and backlash often found with the commonly used torque and groove connecting linkage. The valve stem nut is fixed within the actuator shaft These features, combined with a rigid mounting bracket, result in a pneumatically actuated ball valve which minimizes backlash, assures optimum stem seal life and prevents any possibility of stem nut back off.

Pilot valves are available from other sources, please contact us for more information.
 

Specifications;

Temperature
Pneumatic Actuators are designed to operate in ambient temperatures between -20 F (-28.0 C) and +350 F (+175 C). Care must be taken to assure that the moisture content of the air supply is sufficiently low to prevent icing within the actuator.

Air Supply
Double-Acting model A412D require 50 - 125 psi, A411D model require 75 - 125 psi air supply. Sufficient air delivery must be available at the actuator to ensure dependable operation. The following precautions should be observed:

Air supply should be clean and dry. When dirty or wet air is a problem; a filter / separator should be specified; these units are most effective when installed as closely as possible to the actuator. A filter, when used, should permit a minimum flow of 4 scfm at an upstream pressure of 60 psi.

Eliminate severe restrictions to air flow (certain solenoid valves & fittings). The most restricted passage must have an area no smaller than .003" square, the area of 1/16" diameter orifice. If more than a single actuator is to be supplied by an individual pilot, the minimum passage requirement applies per actuator.

Tubing: 
For short runs up to 5 feet 5/32" I.D. is suitable, 1/4" I.D. will serve up to 30 feet. For longer runs, use 3/8" I.D. or larger.

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