Water Tanks, Park Plastic Products is your liquid storage and transport experts. We sell a complete line of rotomolded polyethylene vertical storage tanks, elliptical & horizontal leg tanks, pick up truck tanks, containment tanks, double wall tanks, acid tanks, potable water tanks, cone bottom tanks and heat traced and insulated tanks to name only a few. Custom welded in couplings, flanged and bulkhead fittings are all available to meet your needs. Custom fabrication of polypropylene and co polymer tanks ...