PKWT series - High water temperature 85°C - Udor pumps produce a flow from 11 to 13 l/m and operate at a maximum of 150 bar. These pumps are driven by electric or hydraulic motors and by diesel engines, suitable for car-wash, pressure washing, food and pharmaceutical industries. Udor pumps recommend performing an oil change after the first 50 hours of use and every 500 hours after that, valve and piston rings should be changed after every 1000 hours of use.