Abstract: A pipe fitting for attachment to a hydrotherapy pump has an inlet and outlet having parallel offset axes, with a separate small hollow nipple extending from and communicating with the inlet. The nipple attaches to the pump at a location normally occupied by the pump freeze plug. The fitting permits complete drainage of the hydrotherapy pump after the pump is shut off.

Abstract: The present invention is an improvement in radial diffusers employed in a turbine engine having a centrifugal compressor. The walls of the diffuser define at least one flow passage through the diffuser having a first portion with a first cross-sectional area and a second portion having a larger, second cross-sectional area. The first wall section is spaced apart from the second wall section so as to define a bleed aperture therebetween. A vortex fence extends outwardly from the wall surface at the leading edge of the second wall portion. Preferably, the bleed aperture and the vortex fence are disposed on the suction surface of each vane in a vaned radial diffuser.

Abstract: In a gas turbine engine having a diffuser provided downstream of the power section and composed of inner and outer diffuser wall members forming therebetween a diffuser chamber which is open into an exhaust gas collector chamber, the outer diffuser wall member is provided with at least one flow guide member which extends on the generally frustoconical outer peripheral surface of the outer diffuser wall member and which is curved arcuately or circularly about the common center axis of the inner and outer diffuser wall members for thereby suppressing formation of vortices in the flow of the combustion gases being exhausted through the collector chamber.