Fluid Energy Controls Inc. Offers Electric Submersible Sludge Pump. Fluid Energy Controls Inc. Supplies fluid power products. Electric Submersible Sludge Pump has been designed for sludge applications. Electric Submersible Sludge Pump is capable of maximum flow rates from 39 to 48 m3/hr and discharge heads to 15 metres. Like other models in the Sub-Prime range, these reliable pumps are suitable for tough construction jobs, quarrying, mining and industrial applications. The design features of this pump is a side discharge that handles solids up to 50mm in diameter, and rugged construction for long life, specifically a chromium-alloy white cast iron vortex impeller and heavy duty polyurethane lined volute. The units also include a double mechanical seal for dry running and extra protection against leakage.