The picture apparently shows a valve for domestic use, in a kitchen or bathroom. If the valve were to be used in some industrial context, directing hundreds of gallons per minute into some vast reservoir, the curvey bit would be too large and tough to be bent and would have to be cast. I picture the "sneezer of a job" as being some kind of one-off part needed for a particular machine in, I dunno, a pulp and paper plant maybe.