Fluid control means for pumps and the like.

摘要

A fluid machine including a device (30) disposed in the inlet passage (16) of the fluid machine for retarding pump cavitational surging at low flow rates. The device includes an annulus (38) assembly having a series of curved radially disposed vanes (32) for capturing fluid backflowing from the pump chamber (14) and redirecting same toward the center of the inlet passageway (16).