through flow path between the inlet and outlet the strainer basket 40 includes an outer member 42 formed of perforated thin sheet metal and has a conical wall 43 tapering inwardly from the inlet toward the outlet adjacent the inlet end the outer member 42 has a radially extending bead or flange 44 having a radial wall 45 on the side away from the inlet and an annular inturned lip 46 on the outermost side adjacent the inlet to define an inlet opening 48 substantially larger than inlet bore 33 to receive all of the flow from the inlet bore 33 wall 43 tapers inwardly toward the outlet where it is formed into an inturned lip 50 defining an outlet opening 51 the inner member 54 formed of the same material as the outer member 42 also has a conical wall 45 tapering from the outlet back toward the inlet where it terminates in an apex 58 the wall 55 adjacent the outlet has an inturned annular lip 56 adapted to seat against the inner side of the inturned lip 50 of the outer member 42 and is secured thereto by suitable means such as spot welds so that the inner and outer members form a single unit the strainer basket 40 is positioned within the central chamber 11 by supporting and centering structures at both the inlet and outlet ends so that the strainer.