Horizontal ball check, standard port

This horizontal check valve uses a ball to close the reverse-flow path. It has a bolted bonnet and standard port construction; its closure member is distinct from the piston-type check. Listed materials include A105N forged body and cover, an A276 Grade420 ball, and a stainless-steel/graphite cover gasket. Threaded and socket-weld end arrangements are described. Confirm the installation direction and pressure-temperature envelope for the selected type and line conditions.