Smith Performance Sprayers NL403 No-Leak Backpack Sprayer for Pest Control, 4 Gallon Exclusive, internal No Leak Pump with Viton seals never leaves harsh chemicals dripping down your back and pressurizes to 150 PSI (stream reaches up to 30 feet) Built-in agitator can handle liquids, powders and water-soluble solutions. Agitator keeps them mixed, in solution and ready to spray Durable, 21 inch stainless steel wand with a 5 PSI no-drip check valve with integrated filter - keeping chemicals from dripping from wand when idle Achieves 65% higher pressure than leading diaphragm pump backpacks. Spray hard-to-reach areas and create more precise spray patterns Patented pump design has minimal high-wear parts (60% fewer replacement parts) and can be repaired in minutes without tools. Less down time!