Support Technical Resources 1579 Mass Flow Controller Model Files 1579 Mass-Flo® Mass Flow Controller 3D Model Files 1579A with 8 VCR Male Fittings 1579A 8 VCR Male Fitting, 15 pin "D" Connector, 0-5VDC 1579A 8 VCR Male Fitting, Profibus 1579A with 1/2 inch Tube Compression Fittings 1579A 1/2 inch Tube Compression Fitting, Profibus Subject to change without notice.