Profile: Allentown Equipment manufactures wet and dry process shotcrete equipment for the refractory, pool, underground, repair & new construction industries. Our equipment includes bowl type guns, rotary guns and predampeners. Our bowl type gun is an automatic gun with the material loaded into the hopper where a rotary stirring spider loosens it and pushes it down into the U-shaped material pockets of the rotating feed bowl. We design rotary guns, which use a moving friction-sealed rotor to meter material into the air stream, a proven design that easily handles the toughest shotcrete mixes.