Abstract: A domestic water clarifier comprising a storage tank and a batch tank having an annular inner wall is described. Raw water is pressurized and injected into the batch tank along with a quantity of a flocculent chemical such that the raw water and the flocculent chemical swirl around the inner annular wall of the tank, thereby mixing the raw water and the flocculent chemical. The mixture is then allowed to stand, thereby separating into clarified water and floc. The clarified water is drawn off to the storage tank and stored until needed. The batch tank is then flushed to remove the floc and to prepare the batch tank for the next clarification cycle.

Abstract: A rotating welding fixture for holding a pipe fitting against a welding table so that socket welds can be fabricated in one continuous operation. A locking dowel is passed into an opening in the fitting and the fitting locked between the table top and the dowel so that the entire weld region is fully exposed to the welding rod. The table is rotatably supported in a base so that the work can be turned past the welding rod to complete the weld without having to break the weld bead.