STEAM AND HOT WATER LINE EQUIPMENT-NAMELY, ANGLE FLANGES, ANGLE JOINTS, ALIGNMENT GUIDES, ANNULAR WEDGES, ANCHORS, ANCHOR BASES AND ANCHOR FITTINGS FOR PIPE, FLANGED BASE FITTINGS, RETAINING DEVICES FOR PIPE INSULATION, MANHOLE FRAMES AND COVERS, PIPE COLLARS, PIPE GUIDES AND SADDLES, ROLLER PIPE SUPPORTS, CAST IRON UNDERGROUND CONDUITS, SINGLE AND DOUBLE EXPANSION JOINTS OF ALL TYPES FOR LOW AND HIGH PRESSURE SERVICE WITH AND WITHOUT GUIDES AND STOPS, PACKLESS EXPANSION JOINTS EMPLOYING FLEXIBLE SEALING MEMBERS, METER MANIFOLDS, LOW AND HIGH PRESSURE STEAM TRAPS FOR PRESSURE AND VACUUM SERVICE, EXPANSION AIR VALVES, STEAM SEPARATORS, AND WATER, OIL, AND STEAM STRAINERS; AND VAPOR HEATING SPECIALTIES-NAMELY, AIR ELIMINATORS, GRADUATED RADIATOR CONTROL VALVES, RADIATOR TRAPS, PRESSURE REDUCING VALVES AND SAFETY VALVES, STEAM JOINTS CLAMPS, BACK-PRESSURE VALVES, BALL JOINTS; AND PIPE FITTINGS FOR VARIOUS USES-NAMELY, BRANCH FITTINGS, COMPANION FLANGES, COUPLINGS, CROSSES, ELBOWS, ECCENTRIC FITTINGS, LATERALS, REDUCERS, PIPE BENDS, FLANGED, THREADED, AND WELDED