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Products > EVA Series Actuators

Easytork's patented pneumatic valve actuator improves on the reliability and direct mount ability of vane actuators while simplifying vane’s single-acting design so that vane actuators can be smaller, lighter, and more competitive than single-acting rack & pinions actuators on every measurable scale.

“The introduction of the pneumatic fail-safe actuator without the use of springs, external reservoirs, has significantly changed the pneumatic fail-safe industry. This technology is in line with the global trend towards advancement in durability, safety, efficiency and cost of pneumatic actuators.”

As featured in Valve World Magazine, Special Topic

High Cycle Guarantee

EVA has the fewest moving parts of any actuator in the market allowing Easytork to test and warranty its products for 2 years or 2 million cycles. Even with minimal maintenance, our actuators continue to work in harsh environments where other actuators fail. With only one moving piece, and environment air never entering actuator, our actuators are designed to outlast the competition.


EVA’s pure rotary-to-rotary torque generation guarantees no loss of motion for tighter accuracy. At <0.5% repeatability, Easytork is an industry leading actuator for throttling.

AWWA C541 Compliant

One of the few pneumatic actuators in the market compliant with AWWA C541


Non-existent springs cannot fail, the same fail-safe torque at end-of-stroke will be the same for a new actuator as it will be for an used actuator. Springs in spring-return-actuators will decay or break over time.

Most Compact - Smallest and Lightest in Class Actuator

Note: All comparisons below based on model sizes with equivalent fail-end-of-stroke output torques.

Fail-Safe Size Comparison:

Fail-Safe Weight Comparison @ 5.5 BAR (80 PSI):

Low Lifetime Operation Cost

Cost saving through less air consumption.

Fail-Safe Air Consumption (CW+ CCW) Comparison @ 5.5 BAR (80 PSI):

For the same output torque, EVA uses >25% less air than a single-acting rack & pinion. Versus a comparable double-acting rack & pinion, EVA uses >50% less air.

Cut Sheets








Technical Data

EVA Technical Data

Build Of Material

EVA Build of Material

Installation and Operation Manual



Double-Acting and Fail-Safe Conversion:

Fail-Close and Fail-Open Conversion:

8" Valmatic butterfly valve with EVA-1022:

Instructional Videos

Altering Degree of Rotation:

Drive Insert Overview, Installation, and Removal:

Adaptable Shafts Overview, Installation, and Removal: