Bath installations; fitted liners for baths and showers; flexible pipes being parts of bath plumbing installations; hand wash basins being parts of sanitary installations; heating systems composed primarily of tubes, pipes and manifolds through which warm or high temperature water circulates; heating systems composed primarily of tubes, pipes and pre-assembled manifolds through which cold or low temperature water circulates; mixer taps for water pipes; pipe heating tape; pipes for heating boilers; pressure regulators for water installations; regulating accessories for water supply, namely, metered valves; regulating accessories for water or gas apparatus and pipes; safety accessories for gas pipes, namely, flashback arrestors and reverse flow check valves; showers; sinks; tap water faucets; taps being faucets; washers for water taps; waste water treatment tanks; water filtering apparatus; water purification installations; water purifying apparatus and machines.;