--- product_id: 26247928 title: "Smith Performance Sprayers NL402 4-Gallon No Leak Backpack Sprayer for Water-Based Cleaners, Sealers, Release Agents and Curing Compounds" brand: "smith performance sprayers" price: "3787 kr" currency: DKK in_stock: true reviews_count: 8 url: https://www.desertcart.dk/products/26247928-smith-performance-sprayers-nl402-4-gallon-no-leak-backpack-sprayer store_origin: DK region: Denmark --- # 4-Gallon Capacity 150 psi Pressure 60% Fewer Parts Smith Performance Sprayers NL402 4-Gallon No Leak Backpack Sprayer for Water-Based Cleaners, Sealers, Release Agents and Curing Compounds **Brand:** smith performance sprayers **Price:** 3787 kr **Availability:** ✅ In Stock ## Summary > 🚀 Elevate Your Spraying Game! ## Quick Answers - **What is this?** Smith Performance Sprayers NL402 4-Gallon No Leak Backpack Sprayer for Water-Based Cleaners, Sealers, Release Agents and Curing Compounds by smith performance sprayers - **How much does it cost?** 3787 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/26247928-smith-performance-sprayers-nl402-4-gallon-no-leak-backpack-sprayer) ## Best For - smith performance sprayers enthusiasts ## Why This Product - Trusted smith performance sprayers brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built-in Agitator:** Mixes liquids and powders effortlessly for consistent spraying. - • **Durable Brass Wand:** Equipped with Viton seals for maximum chemical resistance. - • **No Leak Technology:** Say goodbye to messy spills and hello to a clean back! - • **Quick Repair Design:** Minimal downtime with easy, tool-free repairs. - • **High-Pressure Performance:** Achieve 65% more pressure for precision in hard-to-reach areas. ## Overview The Smith Performance Sprayers NL402 is a 4-gallon backpack sprayer designed for water-based cleaners, sealers, release agents, and curing compounds. Featuring an exclusive No Leak Pump that pressurizes to 150 psi, it ensures no harsh chemicals drip down your back. The built-in agitator keeps your solutions mixed, while the durable brass wand and patented pump design offer high performance and easy maintenance. ## Description Smith Performance SprayersNL402 4-Gallon No Leak Backpack Sprayer for Water-Based Cleaners, Sealers, Release Agents and Curing Compounds ## Features - Exclusive, internal No Leak Pump never leaves harsh chemicals dripping down your back and pressurizes to 150 psi - Built-in agitator can handle liquids, powders, and water-soluble solutions. Agitator keeps them mixed, in solution, and ready to spray - Brass, 18 inch wand containing a no-drip valve stem and shut off with the highest quality Viton seals for maximum chemical resistance - 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! - This is an O.E.M. part ## Images ![Smith Performance Sprayers NL402 4-Gallon No Leak Backpack Sprayer for Water-Based Cleaners, Sealers, Release Agents and Curing Compounds - Image 1](https://m.media-amazon.com/images/I/81aKUWwzasL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Real Quality *by S***S on Reviewed in the United States on July 9, 2016* I downloaded the product manual from the mfgr's website before I received the item from Amazon. After reading the manual I had questions even before I received the sprayer. The manufacturer answered my questions promptly and that impressed me. The sprayer was easy to assemble and pretty straight forward. Took about fifteen minutes to do it right. I promptly loaded her with four gallons of roundup mix. Then the adventure began. Those who warned that this thing is a bear to put on were not kidding. I am a retired Marine, weigh 220lbs and it took four tries to get it on properly. I was a circus side show for those watching. First time the shoulder strap tangled. Second time waist strap tucked under, Third time handle was turned back and I couldn't reach it. This all sounds funny but wait until you try it. I quickly discovered the secret is to get it off the ground and up on something and then back in to it. Works like a charm. Never had another problem getting into it. The quality is apparent the first time you use it. Sprays all that you want were you want it. When you release the lever flow stops immediately, no drizzle!! This a professional sprayer and is not for those who wish to spray two or three quarts of product. For those like me who mix concentrate, you have to use all that you mix. You cannot (should not) store mix in the unit. Cleaning is easy, but you have to dump any unused mix. I have had ten to twelve hand sprayers and this beast puts them to shame. I sprayed six gallons of roundup in less than 45 minutes. A job that used to take me all afternoon. I would recommend this sprayer to anyone who needs a quality volume sprayer. You won't be disappointed. I wish there was a easy way to release the pressure but because of the design of the inside pressure tank there isn't a way. If you are between jobs just point the wand in the storage tank and spray into the tank until the pressure has dropped. By the way it does not leak. It tipped over between jobs with 3 gallons of mix in it and not even a single drop escaped. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Heavy duty backpack sprayer .. Not for the lightweight .. Made well *by E***L on Reviewed in the United States on April 27, 2016* It's not for the light weight but gets the job done .. initially the pumping handle was stuck .. couldn't figure out why it would not move while trying to pump .. was hesitant to apply more pressure because was afraid of breaking the handle! .. Thought it was somehow tied down as it was new and just out of box .. after several attempts I used additional / stronger (abnormal) pressure to move pumping handle and it broke loose .. So far working great .. I have a small private vineyard .. I used about 2 gallons of spraying solution for about 75 early spring (pruned) vines giving them a double spraying pass .. I like all the brass spraying wand parts (not copper like other reviews have stated) .. I can tell it will outlast me! ### ⭐ 1.0 out of 5 stars Piece of crap *by A***R on Reviewed in the United States on May 6, 2017* Bought this looking for an industrial quality sprayer I could use on my 38 acre property. Worked great twice the first season of use, then leaked chemical all down the back of my wife's leg on the third use and first use of the new season. Warranty was no help. Bought a separate rebuild kit - nearly impossible to get the bottom nut off the bottle to replace the gasket there - the cheap plastic threads on the pump assembly penetrating the bottom of the bottle stripped out when I was trying to put the bottom nut back on and the hose barb fitting came loose. Threw the damn thing in the trash. What a waste of money and time.Looked promising when I bought it but the quality is simply not there. Don't waste your good money on this one - find something else to buy. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.dk/products/26247928-smith-performance-sprayers-nl402-4-gallon-no-leak-backpack-sprayer](https://www.desertcart.dk/products/26247928-smith-performance-sprayers-nl402-4-gallon-no-leak-backpack-sprayer) --- *Product available on Desertcart Denmark* *Store origin: DK* *Last updated: 2026-04-22*