Field King Professional 190328 No-Leak Pump Backpack Sprayer . Check Price Bottom Line . This 4 gal. backpack sprayer delivers up to 150 psi and takes fewer than 5 pumps to build pressure. Types of backpack sprayers. Manual: Manual or hand-pumped backpack sprayers are the most common type because of their ease of use and low price. This Smith Performance Field King Pro. Ideal for use all year round, the Smith Performance Field King Pro 15L Knapsack Sprayer is a well balanced unit with a lightweight feel. Easy and convenient to use due to the high efficiency pump. Smith Performance Field King Pro features. A 15 Litre Spray Tank; An Internal Piston Pump with a Maximum 10.3 bar FieldKing Max 15L Backpack Sprayer. A feature packed and popular professional 15L backpack sprayer which is fitted with Viton® seals as standard, making it suitable for a wide range of chemicals, including acids such as organic based Pelargonic acid herbicides. The Field King sprayer comes complete with Comfort Harness System that rivals Amazon.com. Spend less. Smile more. Top 9 Best Backpack Sprayers 2022. 1. Best Overall Backpack Sprayer: Field King 190328 Backpack Sprayer. 2. Best Electric Backpack Sprayer: PetraTools HD4000. 3. Best Premium Backpack Sprayer: M4 MY4SONS. 4. Best Gas Backpack Sprayer: Tomahawk 3 HP Boosted Backpack. Utilizes an internal pump which will never leak on the backside of the user!Reliable pump system pressurizes up to 150 psi for distance spraying, and is equipped with a low pressure 25 psi regulator for controlled herbicide spraying. Engineered for comfort with its thick padded straps, waist belt, chest belt, and lumbar support. Viton o-rings and seals maximize the resistance to harsh Field King Professional 190328 - Best Overall Manual Backpack Sprayer The Field King 190328 sprayer has a four-gallon tank and four metal nozzles: a brass adjustable nozzle, two flat fan nozzles, and a foaming nozzle. These will give you a wide selection of sprays, so you can get thorough coverage across different landscapes. size / dimensions: 15 x 22.5 x 9.5 inches Barely used, fully operational Field King professional 4-gallon manual pump backpack sprayer for pesticide and herbicide application. Retails for 85.00 on Amazon. Asking $60.00 or best offer. Cash only - no cashier's checks, money orders or trades. If interested, please text, call or email - ask for Dave. 9 Backpack Sprayers Reviewed. 1. Field King Max 190348 Professional Backpack Sprayer; 2. Chapin International 61500; 3. Roundup 190314 Backpack Sprayer; 4. My 4 Sons Battery Powered Backpack Sprayer; 5. Chapin International 63985; 6. Solo 475-B Diaphragm Pump Backpack Sprayer; 7. Petra Electric Fogger Atomizer Backpack Sprayer; 8. This is a quick review of the 4 Gal Field King 190515 18 volt Lithium-ion battery-powered lawn and garden sprayer. Field King Professional BackPack Sprayer I bought on Amazon Does an excellent job at spraying fertilizer, will work great for other uses. The sprayer has a n