Capacity and Design: 3.5-gallon (13.25 L) tank with wide funnel-mouth opening (4–5 inches) for easy filling, cleaning, and inspection; ergonomic handle for portability (weighs ~15–20 lbs empty).
Material and Durability: Tri-Poxy triple-layered steel (or poly variant in some listings) for resistance to dents, corrosion, rust, and chemical exposure; chemical-resistant seals handle incidental contact with cleaners, form oils, or VOC sealers.
Pressurization and Sealing: Manual piston pump for on-demand pressure; Tri-Lock cap system ensures a secure, leak-proof seal; built-in brass hose coupling (1/4" or 3/8" NPT) for instant connection to industrial hoses—no adapters needed.