Stainless Steel Hand-Pumped Sprayer (1-Gallon) Stainless steel construction with Viton gaskets and seals. 0% plastic. Hand-pumped sprayer: No recurring energy costs, environmentally-friendly and wire-free. Curved spraying wand: Spray into the spaces under, between, and above objects, with almost no effort. Pressure gauge lets you pump to a precise internal pressure. Schrader valve lets you connect a tire pump.