ECHO MS-4010BPD Backpack Sprayer The ECHO MS-4010BP Backpack Manual Sprayer features a diaphragm pump that makes pressurization quick and simple, reducing user fatigue. Features Has a 4-gallon tank with a wide opening for fast and easy filling Has quick-connect couplers for easy setup and storage Its heavy-duty, nylon-reinforced hose offers excellent durability and chemical resistance Has a tank cap with a built-in carrying handle that includes clips for storing wands while transporting Comes with four types of nozzles for various applications: adjustable, flat fan, hollow cone, and jet stream Features a 90-PSI diaphragm-style pump for long-distance spraying Includes heavy-duty, padded shoulder straps with a waist belt to improve comfort while wearing Has a professional-grade 21-inch fiberglass wand and a 50-inch hose that provides excellent reach and productivity Its commercial-grade control valve features a rubber grip for added comfort