The Udor GKC 50/17-GR plunger pump is built tough to be long lasting under high demand conditions. Suitable for fire suppression, hydro excavating, and sewer jetting among many other uses, this plunger pump has heavy duty reinforced brass heads with bracing externally and internally. Both the piston guides and check valves are made of stainless steel, and the Teflon® coated body guides are replaceable.