Mueller Steam Specialty 791FAH Duplex Basket Strainer

Mueller Steam Specialty / Watts 791FAH Duplex Basket Strainer is a 3-inch, Class 150 cast-iron strainer with a dual-basket design that keeps process flow uninterrupted by allowing one basket to remain in service while the other is cleaned. It houses a 304 stainless steel perforated basket with 1/16-inch (0.062 in) openings to capture debris without restricting throughput. The flange-connected unit uses a 3-inch connection for Class 150/125 service, has a cast-iron body, and provides a 1-1/2-inch blow-off port. Maximum ratings are 200 psi at 150°F and 175 psi at 250°F. Service media include water, fuel, lubricants, and compatible fluids. This strainer is commonly installed in cooling water systems, compressor stations, condenser systems, fire protection lines, fuel systems, lubrication networks, chemical processing equipment, and industrial utility piping, offering continuous operation in pumps, condensers, heat exchangers, and process equipment by allowing basket cleaning without system shutdown.