Wafer check valves
Wafer swing check valves
Wafer-shaped pilot-type valve
Wafer-type direct-acting valve
Wafer-type swing check valve
Wall water hydrant having backflow and back siphonage preventor
Washer assembly
Washerless faucet
Washerless valve structure particularly for faucets
Washing and purging apparatus for liquid seals
Wasp excluder and exhaust port protector for air brakes
Waste water outlet sanitary plant comprising a siphon
Waste water restrictor
Water closet valve assembly
Water closets
Water cock with non-frozen valve
Water conservation device
Water containment and drainage device for an activated...
Water control device for flush valves
Water control for toilet tanks