Check valves

Check valves with hinge shafts retained by welding

Check-valve assembly, in particular for a pressurized water reac

Check-valve construction

Check-valve construction

Check-valve construction

Chemical injection valve

Clapper seal for check valves

Clapper seal for dry pipe valve

Cleanout fitting with lockable and removable check valve

Clog-proof check valve

Closing member for a ring valve

Closing plate for a ring valve

Closure device with self-aligning poppet

Closure member

Collapsible ball valve

Combination check valve and pressure rise rate valve

Combination employing controlled flow check valve

Combination stop and pressure reducing valve

Combination umbrella and inverted bi-directional valve