This EMF Outlet Oil Mist Filter is suitable for all Edwards Rotary Vane pumps up to E2M18. This EMF20 (EMF-20) exhaust filter assembly is supplied with NW25 clamp, centering ring, O-Ring, NW25 to 3/4 BSP adapter, 1 oil element filter and 1 odor element. The benefits of the oil mist filter includes: protection from oil mist emissions as required by COSHH and health and safety regulations. If the oil element becomes blocked, an integral pressure relief valve opens. This filter is very efficient at 99.999% DOP test and is also azide proof. The white bottom half of the body is semi-transparent, allowing the oil level to be monitored. Replacement oil elements and odor elements are available on this website. For complete specifications download instruction manual (see below avaliable below).