Bridge Breaker Progressive Cavity Pumps for Cement Slurry and Plaster are equipped with a "Bridge Breaker" that can pump[ semi-dry, caked materials high solid contents materials, as well as suspended up to 25 mm in diameter. The Bridge Breaker consists of a series of finger mechanisms projecting from counter-rotating shafts mounted directly above the pump's auger feed. Material is efficiently carried into the rotor-stator pumping compartment where progressing cavities move it smoothly.It handles:Materials with viscosities of 1000000 cpMaterials with a high percentage of solids.Dry Semi-caked Materials.