AG Spray Equipment TR300/500LP Tank Trailer- Location Washougal WA ***County Government Surplus*** 500 Gallon poly product tank, 3 rear spray bars, 5 TeeJet 430EC regulator valves, ball hitch, 11L-15 tires. Make: AG Spray Equipment Model: TR300/500LP Location: Washougal, WA Categories: TANKTRAILERS