The 4SR/4SA series submersible pumps are constructed with AISI?304 casings and feature high-strength, durable “floating impellers” made from American Noryl material, which is FDA-approved. They incorporate a high-quality hydraulic design, an AISI?304 motor base built to NEMA standards, a built-in AISI?304 check valve and outlet, and an integrated strainer. These SR/SA series pumps are highly versatile and suitable for a wide range of applications, including domestic, agricultural, industrial, mining, and food and beverage industries.