FIELD: manufacture of compressors; metallurgy, chemical and petrochemical industries. SUBSTANCE: check valve fitted in delivery line of compressor and provided with drive is worked out regularly by means of compressor control system through regular supply of working medium to drive; check valve is closed by no more than 1/4 of full stroke. When use is made of electromagnetic drive, its housing may be filled with liquid and may be provided with damping device. EFFECT: enhanced efficiency. 3 cl, 7 dwg
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