Tyco Flow Control makes fully lined ball check valves & sight glasses, in sizes from 1 to 3" and pressure maximum of 232PSI. These valves operate at a max temperate of 392F, and have flanges conforming to ANSI150, DN PN 16, AS 2129, BS 10 D/E, or JIS 10K standards and are for use in hazardous applications.

Sure Flow Equipment designs and manufactures double door check ball valves, swing check ball valves, and silent check ball valves. The company's industrial check valves are available in wafer duo disc, silent, wafer, flanged and swing designs.

Boig and Hill is a supplier of special service and high performance ball check valves manufactured by Worcestor Controls.