[ MACHINERY, TOOLS, AND PARTS THEREOF-NAMELY, "CHRISTMAS TREES" AND DISTRIBUTION MANIFOLD ASSEMBLIES OF VALVES AND FITTINGS SOLD AS A UNIT FOR USE IN CONNECTION WITH OIL AND GAS WELLS, CASING HEADS AND HANGERS AND TUBING HEADS AND HANGERS FOR OIL AND GAS WELLS, UNIVERSAL JOINTS FOR VALVE STEM EXTENSIONS, GREASE GUNS AND LUBRICATOR FITTINGS THEREFOR FOR LUBRICATION OF SEATS AND STUFFING BOXES OF VALVES, VALVE STEM WRENCHES, AND ] VALVES WITH POWER UNITS FOR OPERATING THE VALVES

(1) MANUALLY OPERABLE VALVES AND SELF-ACTING VALVES-NAMELY, GATE, GLOBE, ANGLE, CHECK, THROTTLE, BALL, CHOKE, NEEDLE, AND RELIEF VALVES FOR FLUIDS, [ FILL AND VAPOR RETURN AND VENT VALVES FOR USE IN FEEDING COMPRESSED GASES FROM ONE PRESSURE CONTAINER INTO ANOTHER, VALVES FOR INSTALLATION ON COMPRESSED GAS CYLINDERS AND ] OTHER PRESSURE CONTAINERS, AND VALVE MANIFOLDS TO BE CONNECTED TO FLUID LINES; AND FOR (2) FITTINGS FOR PIPE AND TUBE LINES FOR FLUIDS-NAMELY, T'S, ELBOWS, CROSSES, UNIONS ...

REFRIGERATION ACCESSORIES-NAMELY, FITTINGS WITH INSPECTION WINDOWS MOUNTED THEREIN, FITTINGS WITH STRAINERS MOUNTED THEREIN, FITTINGS WITH FILTERS MOUNTED THEREIN, FITTINGS WITH ABSORBENT DRYING MATERIAL MOUNTED THEREIN, SERVICE KITS WITH REPAIR PARTS FORHERMETICALLY SEALED REFRIGERATING UNITS, REFRIGERANT CHARGING STANDS (EACH INCLUDING A CYLINDER AND SIGHT FEED GAUGE GLASS WITH VALVES AND FITTINGS FOR CHARGING DETERMINABLE AMOUNTS OF REFRIGERANT), VALVES FOR REFRIGERANT COMPRESSOR OUTLETS, ...