CPC Subgroup
E03B 7/08 Arrangement of draining devices, (draining devices in general F16K, F16L)
Full Title
Water main or service pipe systems (pipes or tubes in general F16L) > Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems > Arrangement of draining devices, (draining devices in general F16K, F16L)