Engineered for maximum fluid and chemical compatibility. Heavy duty, stall free, non-metallic air section ensures stall free & freeze free operation. Rugged valve system allows operation under a variety of conditions, ranging from clean fluids to slurries, to small solids. Bolted design offers ease of maintenance and leak-free operation. Available in a variety of materials and options. Suitable for clean liquids, slurries, or up to 1/4" solids.