Mueller Steam Specialty is a check valve manufacturer offering cast iron, bronze, cast carbon steel, cast stainless steel and cast bronze styles. Types include wafer, globe, silent and NPT. Mueller also offers specialty products like Chexter pivot check valves in aluminum bronze, carbon steel, stainless steel, cast iron and rf carbon steel.

Titan Flow Control makes a full line of check valves, including short pattern, threaded in-line, swing type, wafer style, global style, and silent center guided styles. These products are made of carbon/stainless steel, cast brass, and ductile iron, in classes of 125, 150, 250, 300, 600, and 900 pounds.

Apollo offers bronze and stainless steel check valves. Bronze types come in sizes 1/4" to 3", and are threaded in-line soft seat or ball cone type. Their stainless steel models are threaded in-line as well.

American offers bronze and brass check valves, including swing type with threaded or sweat ends, inline spring loaded with threaded ends for vertical or horizontal usage, and swing bronze heavy duty designs.

Specialty offers SCV threaded check valves and threaded basic check valves, which are all-purpose spring assisted in-line designs requiring low maintenance and used in varied pressure and temperature applications.