Goulds Water Technology 33GS - 80GS 4-inch high-capacity submersible pumps are designed for residential, small municipal water supply, and light irrigation applications. Powered for continuous operation, they can run nonstop without damaging the motor. They are constructed with a strong and corrosion-resistant stainless steel casing. To protect against abrasion, they are made with a durable polymer-bearing material and a stainless steel and FDA-compliant BUNA rubber built-in check valve that also ensures quiet operation. Components include impellers, diffusers and bearing spiders that are nontoxic, and a six-sided hex shaft design that ensures a positive impeller drive. They can be easily serviced with common tools and readily available repair parts. 866/325-4210; www.goulds.com.