--- product_id: 2710026 title: "190328 Backpack Sprayer, 4 Gallon, with Internal No Leak Pump Design Delivers 150 PSI" brand: "field king" price: "β‚Ή 34221" currency: INR in_stock: true reviews_count: 13 category: "Field King" url: https://www.desertcart.in/products/2710026-190328-backpack-sprayer-4-gallon-with-internal-no-leak-pump store_origin: IN region: India --- # 4 Gallon tank capacity Internal No Leak Pump, no drips Delivers up to 150 PSI pressure 190328 Backpack Sprayer, 4 Gallon, with Internal No Leak Pump Design Delivers 150 PSI **Brand:** field king **Price:** β‚Ή 34221 **Availability:** βœ… In Stock ## Summary > 🌿 Spray Like a Pro, Stay Ahead of the Weeds! ## Quick Answers - **What is this?** 190328 Backpack Sprayer, 4 Gallon, with Internal No Leak Pump Design Delivers 150 PSI by field king - **How much does it cost?** β‚Ή 34221 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/2710026-190328-backpack-sprayer-4-gallon-with-internal-no-leak-pump) ## Best For - field king enthusiasts ## Why This Product - Trusted field king brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Powerful Precision:** Sprays up to 150 PSI, reaching even the toughest spots with professional-grade pressure. - β€’ **Stay Dry, Work Smart:** Internal No Leak Pump design keeps chemicals off your back and clothes for safer, cleaner use. - β€’ **Comfort Meets Control:** Adjustable padded straps, waist belt, and lockable brass shut-off reduce fatigue during long work sessions. - β€’ **Effortless Maintenance:** Tool-free seal changes in minutes with premium Viton seals, minimizing downtime and maximizing productivity. - β€’ **Versatile Spray Options:** Includes 6 specialized nozzles plus TeeJet compatibility for every spraying needβ€”from fine mist to foaming action. ## Overview The FIELD KING 190328 Backpack Sprayer is a 4-gallon, manual sprayer featuring an innovative internal no-leak pump that delivers up to 150 PSI. Designed for professional and serious gardening use, it offers six versatile nozzles, easy tool-free maintenance with Viton seals, and ergonomic comfort with adjustable straps and a lockable brass shut-off. Perfect for herbicides, weed killers, and a variety of liquid and powder solutions, it ensures efficient, mess-free spraying every time. ## Description FIELD KING 190328 Professional No Leak Pump Backpack Sprayer does the work of a piston or diaphragm backpack sprayer. The exclusive internal No Leak Pump keeps your back and clothing dry. The paddles keep liquids, powders, and water-soluble solutions mixed, in solution, and ready to spray. Also the pump features Viton seals that can be easily changed within minutes without tools (up to 7x faster than the leading competitor). The premium shut-off offers a comfort grip, lockable trigger to prevent hand fatigue, and a removable in-line filter to reduce clogging. The FIELD KING 190328 Backpack Sprayer is capable of spraying up to 150 PSI - perfect for those hard-to-reach areas. The included pressure regulator maintains a low, continuous 25 PSI (great for spraying herbicides and weed killers). The tank has a built-in carry handle with wand storage. With adjustable padded straps, waist belt and chest cinch strap, the backpack ensures comfort while you work. Multiple nozzles are included for ultimate versatility: brass adjustable nozzle (enables stream to cone patterns), wide flat fan nozzle (red, 0.25 GPM, angled at 70Β°), narrow flat fan nozzle (yellow, 0.15 GPM, angled at 30Β°), high volume wide fan (brown), jet stream (orange) and foaming (black). Also accepts TeeJet nozzles. Review: Excellent sprayer, gets the job done - I have 3 different size tank sprayers (1,2,3 gallon) and was tired of carrying them around the farm. We have a 300 ft barn lane and 400 ft drive with a half circle turn around with gravel surface. I use 6 gal of spray to keep weeds/grass out of drives. We have 3 pastures totaling 20 acres surrounded by woods and 26 acres of woods in a woodland management plan. I needed a sprayer that I could use to kill invasive species along the pasture edge and in the woods. This sprayer does the trick. It worked perfectly right out of the box. The wide mouth on the tank with a screen allows you to pour chemical easily into the sprayer and the screen catches anything that might fall into it. I was able to take water, chemical and sprayer in a trailer to the back of the property, mix it the field and spray the pastures edge. I used 11 gallon of chemical first time I used the sprayer and it worked great. No leaks, 5 or 6 pumps pressurizes the tank with excellent spray coverage. With the wand I can reach 10 ft high and the spray is another 3 ft so I can reach places I couldn't reach with the hand held sprayers. Having the sprayer on your back is much easier than carrying around a tank and having to stop to pump 12 or 15 times to keep good pressure. I thought I would use more chemical due to the excellent spray coverage but I was pleasantly surprised that I used less chemical than before. I was able to spray about 1000 ft of pasture edge with the 11 gallons of spray. We have serious problems with Chinese bittersweet, grapevine and privet so I use Crossbow in the sprayer. Clean up was easy, the filter on the wand is easy to get to, the nozzle is easy to remove. The one thing I can't use it for is walking thru brush to get to invasive plants that are well hidden but I knew that before I bought this sprayer. With a tank full of spray on your back it is hard to maneuver in close quarters. If you are looking for a good sprayer, at a fair price that does the job intended then look no further than this sprayer. It is well worth the investment. One caveat is that any piece of equipment is only has good as the maintenance so I would encourage you to clean after every use, use vaseline on the o-rings and take care of the equipment you purchase. Review: No leaks and incredible pressure! - I have gone through quite a few garden sprayers over the years, but this four gallon backpack model is by far the best one I have ever used. The standout feature for me is the internal pump design. With my older sprayers, I would constantly end up with harsh chemicals leaking down my back, but this unit keeps my clothing completely dry. The padded shoulder straps and waist belt make carrying a full tank surprisingly comfortable, even when I am walking around the yard for an hour at a time. The internal agitator paddles are also a fantastic touch because they keep my powdered fertilizers perfectly mixed while I work. The performance is exactly what I needed for treating my large property. It pumps up to an impressive 150 PSI, which makes it incredibly easy to reach the higher branches of my trees without needing a ladder. Having six different nozzles included right out of the box gives you total versatility whether you need a wide fan spray for weed killer or a direct stream for bug control. The brass shut off valve feels very heavy duty and the lockable trigger absolutely saves my hands from cramping up during long jobs. If you do your own lawn care and need a reliable piece of equipment, I highly recommend picking this up. ## Features - Internal No Leak Pump design is safer to use chemicals will not drip down your back. Internal piston pump delivers up to 150 PSI - Durable, 21 inch poly wand with the highest quality Viton seals can be used with Wet table powders and liquids for all applications does the work of both a piston and diaphragm backpack - Premium, lockable shut off with brass components and an in-line filter. - Easy access pump allows changing of seals in just minutes with no tools - Includes 6 Nozzles: adjustable brass, high volume wide fan (brown), low volume wide fan (red), low volume narrow fan (yellow), jet stream (orange) and foaming (black). Also accepts TeeJet nozzles. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000AYHKUO | | Best Sellers Rank | #7,209 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #33 in Lawn & Garden Sprayers | | Brand | Field King | | Brand Name | Field King | | Color | White | | Customer Reviews | 4.5 out of 5 stars 6,786 Reviews | | Global Trade Identification Number | 00841688002586, 30841688002587 | | Hose Length | 21 inches | | Included Components | 6 Nozzles, professional stainless steel wand | | Item Dimensions W x H | 9.5"W x 22.5"H | | Item Type Name | Backpack Sprayer | | Item Weight | 12.8 pounds | | Manufacturer | Fountainhead Sprayers | | Manufacturer Part Number | 190328 | | Material | Brass | | Material Type | Brass | | Maximum Pressure | 150 psi | | Model Name | FIELD KING 190328 Backpack Sprayer, 4 Gallon | | Model Number | 190328 | | Number of Items | 1 | | Power Source | Manual | | Recommended Uses For Product | Spraying Weed And Herbicides Killers | | Style Name | Base Model, Manual | | Tank Volume | 4 gallons | | UPC | 841688002586 094716169090 657819404606 | | Unit Count | 1 Count | ## Product Details - **Brand:** Field King - **Color:** White - **Material:** Brass - **Recommended Uses For Product:** Spraying Weed And Herbicides Killers - **Tank Volume:** 4 gallons ## Images ![190328 Backpack Sprayer, 4 Gallon, with Internal No Leak Pump Design Delivers 150 PSI - Image 1](https://m.media-amazon.com/images/I/71b3gswIT-L.jpg) ![190328 Backpack Sprayer, 4 Gallon, with Internal No Leak Pump Design Delivers 150 PSI - Image 2](https://m.media-amazon.com/images/I/81YmU2w9cwL.jpg) ![190328 Backpack Sprayer, 4 Gallon, with Internal No Leak Pump Design Delivers 150 PSI - Image 3](https://m.media-amazon.com/images/I/51CRnpTItML.jpg) ![190328 Backpack Sprayer, 4 Gallon, with Internal No Leak Pump Design Delivers 150 PSI - Image 4](https://m.media-amazon.com/images/I/81BG91arnML.jpg) ![190328 Backpack Sprayer, 4 Gallon, with Internal No Leak Pump Design Delivers 150 PSI - Image 5](https://m.media-amazon.com/images/I/61f8ehrrF4L.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: How many gallons does it hold?** A: The tank holds 4 gallons when full; it has graduated markings of 1, 2, and 3 gallons also. When full, it weighs 50 pounds. The back pack makes it feel like less than that once you have it on your back. This is most easily done if you set it on a bench top or table top, and then "slip" into the harness. **Q: Has anyone had any experience with using this sprayer for a stain or oil based product for spraying/staining a split rail fence?** A: use a $20.00 plastic cheaPO 1 gallon pump spray worth it for large deck saves serious time ive done this 5 plus times solvents and stayin etc usually ruin pump in hours make sure finish same day b/c next day pump might be junk **Q: what is the difference bet 190328 and 190348** A: The 190328 Field King backpack has adjustable padded shoulder straps and durable poly wand; whereas, the 190348 Field King Max backpack has a deluxe padded harness with a full back pad, wide support waist belt and chest cinch strap. It also features a 21" poly-lined stainless steel wand and foldable pump handle making it easier to transport and store. They both have the internal No Leak pump, Viton seals, lockable shut-off with removable filter, and 4 nozzles. Please let us know if you have any other questions. You can also call us at 1-800-311-9903. Thank you for your interest in our products. **Q: will it work for Organic fertilizers? Using Fertilizers that have some tiny solids.** A: I haven't used it for organic fertilizers but as long as the solids are soluble in water, it should work. If they are not soluble, they will likely clog up the spray head. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent sprayer, gets the job done *by O***O on September 28, 2019* I have 3 different size tank sprayers (1,2,3 gallon) and was tired of carrying them around the farm. We have a 300 ft barn lane and 400 ft drive with a half circle turn around with gravel surface. I use 6 gal of spray to keep weeds/grass out of drives. We have 3 pastures totaling 20 acres surrounded by woods and 26 acres of woods in a woodland management plan. I needed a sprayer that I could use to kill invasive species along the pasture edge and in the woods. This sprayer does the trick. It worked perfectly right out of the box. The wide mouth on the tank with a screen allows you to pour chemical easily into the sprayer and the screen catches anything that might fall into it. I was able to take water, chemical and sprayer in a trailer to the back of the property, mix it the field and spray the pastures edge. I used 11 gallon of chemical first time I used the sprayer and it worked great. No leaks, 5 or 6 pumps pressurizes the tank with excellent spray coverage. With the wand I can reach 10 ft high and the spray is another 3 ft so I can reach places I couldn't reach with the hand held sprayers. Having the sprayer on your back is much easier than carrying around a tank and having to stop to pump 12 or 15 times to keep good pressure. I thought I would use more chemical due to the excellent spray coverage but I was pleasantly surprised that I used less chemical than before. I was able to spray about 1000 ft of pasture edge with the 11 gallons of spray. We have serious problems with Chinese bittersweet, grapevine and privet so I use Crossbow in the sprayer. Clean up was easy, the filter on the wand is easy to get to, the nozzle is easy to remove. The one thing I can't use it for is walking thru brush to get to invasive plants that are well hidden but I knew that before I bought this sprayer. With a tank full of spray on your back it is hard to maneuver in close quarters. If you are looking for a good sprayer, at a fair price that does the job intended then look no further than this sprayer. It is well worth the investment. One caveat is that any piece of equipment is only has good as the maintenance so I would encourage you to clean after every use, use vaseline on the o-rings and take care of the equipment you purchase. ### ⭐⭐⭐⭐⭐ No leaks and incredible pressure! *by R***R on April 10, 2026* I have gone through quite a few garden sprayers over the years, but this four gallon backpack model is by far the best one I have ever used. The standout feature for me is the internal pump design. With my older sprayers, I would constantly end up with harsh chemicals leaking down my back, but this unit keeps my clothing completely dry. The padded shoulder straps and waist belt make carrying a full tank surprisingly comfortable, even when I am walking around the yard for an hour at a time. The internal agitator paddles are also a fantastic touch because they keep my powdered fertilizers perfectly mixed while I work. The performance is exactly what I needed for treating my large property. It pumps up to an impressive 150 PSI, which makes it incredibly easy to reach the higher branches of my trees without needing a ladder. Having six different nozzles included right out of the box gives you total versatility whether you need a wide fan spray for weed killer or a direct stream for bug control. The brass shut off valve feels very heavy duty and the lockable trigger absolutely saves my hands from cramping up during long jobs. If you do your own lawn care and need a reliable piece of equipment, I highly recommend picking this up. ### ⭐⭐⭐⭐⭐ Great, reliable product *by A***R on September 27, 2026* I have two of these backpack sprayers and I have been extremely pleased with them. I purchased my first over a year ago for herbicide, and a second recently for insecticide. I do not use a lot of the attachments, but it is nice that they are available for when the need arises. These are used in the woods and stored in a shed, and as far as I can tell the components are durable for that line of work. I have never had a problem with pressure retention, and hope to get many years out of these two sprayers. ## Frequently Bought Together - FIELD KING 190328 Backpack Sprayer, 4 Gallon, with Internal No Leak Pump Design Delivers 150 PSI - RM43 Concentrated Extended Control Weed Killer --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.in/products/2710026-190328-backpack-sprayer-4-gallon-with-internal-no-leak-pump](https://www.desertcart.in/products/2710026-190328-backpack-sprayer-4-gallon-with-internal-no-leak-pump) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-10-19*