In multiple-compressor parallel systems, oil level regulators are installed to maintain an adequate oil level. Oil is fed conventionally from an oil reservoir. The correct selection of all components are necessary to guarantee the function of regulators.

Oil level regulators are available in a mechanical or electronical version. The standard versions of regulators are manufactured with a 3-bolt or 4-bolt flange and for compact installations with a thread-fitting. For the installation on various compressor sight glass designs, ESK is offering a wide range of adapters and couplings.