June 2013


HP Reliability: Gain more flexibility with special liners for reciprocating compressor cylinders

By changing only the crank-end head, piston and rod assembly, the same cylinder body can be mounted on any of the common 5-in. to 7-in. stroke compressor frames that have been manufactured in the last five decades.

Bloch, Heinz P., Hydrocarbon Processing Staff

Most reliability engineers with responsibilities in reciprocating compressors are familiar with replaceable cylinder liners for these positive displacement machines, as shown in Fig. 1. ACI, based in Mount Vernon, Ohio, has designed and supplied “FlexBore” inserts that are an offshoot of the cylinder liners typically incorporated in API-style process reciprocating compressors.     Fig. 1. An ACI FlexBore compressor cylinder.  New solution ACI’s FlexBore cylinders can provide a simple solution to one of the most labor-intensive problems of compressor reconfiguration commonly found in gas-gathering applications. With the new cylinders, it may not

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