Fox Valve manufactures a complete range of venturi products for the refining and petrochemical industries , including steam jet ejectors, multi-stage jet vacuum systems, thermocompressors, liquid eductors, aspirators, sampling mini-eductors; solids conveying eductors for pneumatic conveying of plastic pellets, coal and other powders; and *P venturi flowmeters, sonic chokes, critical flow venturies, and Laval nozzles, for measuring and regulating flow of liquids and gasses.