German pump manufacturer based in Radolfzell, with more than 160 years of history that began in 1860 with Gotthard Allweiler's fire-fighting wing pump. Part of CIRCOR, Allweiler makes three-screw and twin-screw, progressing cavity, centrifugal, propeller, side channel, plunger and diaphragm pumps for marine, oil and gas, power generation, industrial, water and wastewater applications. The IMO, Houttuin and Tushaco lines are product brands of Allweiler.