HDP Series sewer pumps from Hammelmann Corp. are suited for sewer cleaning applications. With flow up to 160 gpm and pressures of 3,200 psi, they can handle any sewer blockage problem. They have a compact design with optimum space utilization and integral reduction gear. They are available in horizontal or vertical models, and have a reversible pump head, a central or side suction connection, discharge connections on both sides, a left- or right-hand drive shaft, operation at any angle, and a water end suitable for recycled water. They have high-grade solid ceramic plungers, wear-resistant valve seats, and low-flow velocity over suction and discharge valves. Packing seal sets are within rust-resistant stainless steel sleeves. Their standard industrial drive ends are specifically designed for continuous duty. 800/783-4935; www.hammelmann.com.