MANN+HUMMEL ProVent 400 Oil separator 3931070700 model cat 299d 78 Inches (172 MM) Length model deere 333g 78 Inches (172 MM) Length 23 91 inch (23 mm) Length 2 The ProVent® 400 is a compact crankcase ventilation system for engines up to 400 kW and is characterised by the following advantages: • Up to 400 l min blow by gas • Very compact design • Available with high efficiency or ultra efficiency medium • Integrated pressure regulation for crankcase • Also available with bypass valve (integrated in separation element) • Tool free element replacement with protection against incorrect insertion through turn lock mechanism and element with integrated handle • Suitable for use with open or closed CCV system • Use of two ProVent® 400 in parallel possible • Check valve for oil return available (recommended) • Suits applications up to 675hp