Abstract: A jet pump having a rotatable venturi cartridge to permit any of several different sized venturi tubes to be aligned with a nozzle in the pump casing. A knob is provided on the pump casing to permit convenient rotation of the venturi cartridge. Printed indicia on the knob align with an indicator arrow to visually indicate the setting of the knob.

Abstract: A check valve assembly includes a generally bell shaped casing having a flared, open end section and a fluid inlet in opposed relation to the flared end section. A body removably connected to the casing covers a portion of the flared end section and has a fluid outlet as well as two spaced, outwardly extending ball guiding members which are matingly received within opposed walls of the casing. The ball guiding members are configured to shift the ball along a path of travel between a first, flow impeding position adjacent the fluid inlet and a second position spaced from the inlet and disposed laterally of a substantially straight fluid passageway extending between the inlet and the outlet.