The function of Oil Regulator Shut-off valves is to provide a means for equipment isolation. Horizontal and vertical models are available. Applications These valves are positioned on the oil inlet and equalisation pipe lines of Henry Technologies Oil Level Regulators. This allows each oil level regulator to be isolated in the event that servicing is required on the compressor, oil level regulator, strainer, etc. The valves are suitable for HCFC and HFC refrigerants, along with their associated oils.