815	STEAM AND HOT WATER FITTINGS, ACCESSORIES, AND SUPPLIES
81506  *	Cocks: Air, Drain, Gauge, Pet, Try, etc.
81512  *	Expansion Joints
81518  *	Fusible Plugs
81522  *	Gaskets: Flange, Handhole and Manhole, All Types
81526  *	Gauge Glass and Gaskets
81528  *	Gauge Siphons and Pulsation Dampers
81540  *	Mechanical Shaft Seals
81545  *	O-Rings
81548  *	Oil Seals
81552  *	Packing, All Kinds (Except Sheet): Rod, Shaft, Valve Stem, etc.
81554  *	Packing, Sheet, All Kinds
81558  *	Pressure Gauges (Not Hospital, Laboratory, and Refrigeration)
81562  *	Steam Specialties: Air Vent Valves, Main Vent Valves, Radiator Valves and Traps, etc.
81565  *	Steam Traps and Strainers
81570  *	Thermometers, Industrial; and Thermometer Wells
81573  *	Valves, Directional Control (To Control Pneumatic, Hydraulic, or Water Cylinders)
81575  *	Valves, Mixing
81578  *	Valves, Pressure Reducing
81581  *	Valves, Relief and Safety
81584  *	Valves, Temperature and Pressure Regulating
81590  *	Water Gauges, Columns, etc.