® WGR™ rubber lined slurry pumps are designed to provide low cost slurry pumping solutions for many abrasive appliions. Tunnelling, Gravel and Dredge Pumps. When you need to pump very large particles, the ® D, G, GH, GHP, GHPP and SHG pump range is the world's standard. ® D, G, GH, GHP, GHPP and SHG.