LobePro Rotary Pumps currently manufactures 13 models of positive displacement rotary lobe pumps divided into three series: S-Series (sludge/slurry and general use) pumps, C-Series (chemical/and corrosive resistant) pumps, and D-Series (duplex pumps and abrasive applications). Each series is also available in an API-Series (API-676 Compliant for Oil and Gas Industry). All are built and assembled in the USA. We guarantee shipment of wear parts within 2 working days of receiving an order or the parts are free. This applies for the first 5 years after a LobePro pump is purchased.