These Agilent Varian exhaust mist filters are designed to be attached to the outlet of Agilent Varian rotary pumps and its purpose is to purify the exhaust gas from oil mist. The oil mist filter is provided with a relief valve to protect the pump from overloads caused by excessive resistance on the on the-exhaust line. The oil element cartridge is enclosed in the case of the filter. For complete instruction manual scroll down to (AVAILABLE DOWNLOADS) below and download the PDF.