Series FIF sight flow indicators, provided with flanged ends per ANSI B16.5 and B16.24, offer inline, on-the-spot viewing of a pipeline’s contents. They may be configured with flapper, drip tube or rotary flow indicators and are rated at 150 PSIG. Full ANSI pressure class 150 rating is available. Standard units are available in ½ in. to 20 in. sizes and weights range from 4 lbs to 230 lbs. Standard materials of construction include bronze, carbon steel, or 316 steel for the body, carbon steel or ductile iron for the lens retainer, carbon steel fasteners, neoprene or Teflon gaskets, and borosilicate glass lenses. Other materials are available upon request. Options include DIN flange connections and double window assemblies.