Very viscous materials such as sealants and some adhesives will not readily flow into the pump inlet. Our bare pumps overcome this by using a piston with a priming plate that pulls the material into the inlet.
These pumps are specially designed for viscous materials and produce smooth flows over a wide viscosity range. The combination of priming piston, large internal ports and 'severe duty' construction results in a high quality pump for the most difficult of extrusion applications.
Beginning with the 10-1 ratio Monark pump, sizes and optional ratios progress through the President, Senator, Bulldog, King up to our biggest pump, the 82-1 ratio Premier. There is often a choice between Carbon Steel or Stainless Steel constructions.
We can offer a selection of extrusion guns.