Machined Clearance Pockets
Minimize losses for high-speed compressors

Most high speed units run unattended and the operating conditions continually change. With CECO Automatic Machined Clearance Pockets the units can be kept closer to 100% load. These pneumatically-actuated valve cap unloaders allow you to change load and capacity with varying operation conditions while maintaining high compressor efficiency.

Custom designed and exactly tailored to your size requirements, our machined pockets can be fitted with pneumatic actuators to open and close with a low pressure air or gas signal and comply with API 618 2.7.

For shorter delivery and exact volume, they are made from machined parts–not castings. They are tested to 1.5 times the maximum working pressure. We can assist you in determining the optimum cubic-inch-size pocket required to satisfy your operating conditions

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Features Benefits
Fail safe–Opens on loss of operating pressure
Our actuators’ balanced piston fail-safe design assures you that they will open the pocket on zero operating pressure, allowing for automatic unloading
Beveled plunger Smoother unrestricted gas flow
Robust and lower profile Minimum space required for installation
No machining required to install Saves installation cost and minimizes compressor downtime
Machined parts-Not castings Eliminates possibility of poor castings


For more information: 800-879-2326 or TRYCECO@ceconet.com