Technical

Construction and Materials

The liquid contact head of Cat Pumps’ plunger pump is made up of one or two manifolds, which are normally precision machined from high quality castings. Plunger pumps are available in a choice of liquid-contact materials including Brass, Gunmetal, 316 Stainless Steel and Nickel Aluminium Bronze. These materials ensure that the best combination of chemical resistance, life cycle costs and economic investment.

For the most demanding applications where excellent chemical resistance is paramount, Block Style pumps are available. The manifolds are machined from solid forged billets that guarantee the best possible metallurgy, close grain structure, enhanced fatigue strength and resistance to attack from aggressive liquids, such as deionised water. This manufacturing technique minimises porosity and inclusions, whilst also providing fully traceable material certification and controlled internal surface finishes. Materials available include Duplex and Super-Duplex Stainless Steels, Hastelloy™ and Titanium