The Chopper Pump from Landia needs no axial adjustment of the impeller to provide continuous efficient cutting of solids. Its knife system chops all debris before it enters the pump, eliminating health and safety risks for maintenance crews. The pump casing and impeller protect against impurities. The stainless steel unit with nitrile seals withstands severe applications such as dewatering hazardous waste acids and alkalis. 919/466-0603; www.landiainc.com.