HEI Manufactured Equipment Call: (936) 856-4515 > Email Us > View HEI Spare Parts Catalog (PDF) Inclined Plate Clarifiers Oil Water Separators Filter Presses Skid Mounted Units Media (Sand) Filters Hazardous Waste Sludge Dryers Sludge Thickeners Dissolved Air Flotation Systems Reverse Osmosis Membrane Systems Ultra Filtration Systems Polyelectrolyte Makeup Unit Package Plants Questions? > Contact Us or call 936.856.4515