Potable drinking water infrastructure products, namely, rubber pipes and non-metal flexible pipes, valves of rubber or vulcanized fiber and pipe fittings not of metal, namely, rosettes; commercial water infrastructure products used by towns and municipalities to transport potable drinking water from water utility companies to residential, commercial and industrial users, namely, rubber pipes and non-metal flexible pipes, valves of rubber or vulcanized fiber and pipe fittings not of metal, namely, rosettes; valves of rubber or vulcanized fiber; flexible pipes, not of metal; non-metal pipe collars; non-metal pipe couplings and joints; non-metal pipe muffs for use with non-metal pipe, namely, pipe made of polyvinyl chloride ("PVC") and high density polypropylene or polyethylene ("HDPE") pipes; pipe fittings, namely, rosettes; pipe gaskets; plastic pipes for plumbing purposes; plastic conduit for plumbing use; plastic hoses for plumbing use; plastic pipes for plumbing purposes; plastic plumbing hoses; plumbing pipes of plastic; watertight rings for plumbing pipes; plastic couplings and elbows for use with electrical conduits; plastic conduit and plastic fittings therefor for use in underground and above-ground electrical installations; valve closure seating being a part of large butterfly valves not of metal; vulcanized fiber, polyvinyl chloride ("PVC"), and high density polypropylene or polyethylene ("HDPE") valves for water,filtration, power plant and industrial uses, turbine-condenser expansion joints of vulcanized fiber, polyvinyl chloride ("PVC"), and high density polypropylene or polyethylene ("HDPE"); glass fiber filtration media sold in rolls; graphite packing for pumps, gaskets and valves; non-metal pipe flanges; rubber plugs for T's and nipples; rubber seat butterfly valves