Check-All Valve Manufacturing Company

Check-All Valve manufactures check valves, stainless check valves, sanitary check valves, connector check valves and flange check valves.

Conval, Inc.

Conval has been manufacturing quality products since 1962.

NEOPERL®, Inc.

NEOPERL® is the manufacturer of the NEOPERL® check valve cartridge.

Val-Matic Valve & Manufacturing Corp.

Val-Matic Valve & Manufacturing manufactures check valve types, which include the SURGEBUSTER®, Tilted Disc®, Dual Disc®, Swing-Flex® and Silent Check® Valves; Plug Valves, Butterfly Valves, nine types of Air Valves and Sure Seal Foot Valves.

William E. Williams Valve Corporation

Williams Valve Corporation manufactures quality valves including check valves, ball check valves, cast steel swing check valves, and stainless check valves for industrial and commerical applications worldwide.