How many gallons does it hold?

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.

Has anyone had any experience with using this sprayer for a stain or oil based product for spraying/staining a split rail fence?

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

what is the difference bet 190328 and 190348

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.

will it work for Organic fertilizers? Using Fertilizers that have some tiny solids.

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.

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Professional 190328 No Leak Pump Backpack Sprayer for Killing Weeds in Lawns and Gardens

Professional 190328 No Leak Pump Backpack Sprayer for Killing Weeds in Lawns and Gardens

Product ID: 223019586

Details

Brand
Field King
Item Weight
12.8 Pounds
Material
Brass
Style
Adjustable
Tank Volume
1 Gallons

💧150 PSI max pressure

🔧Tool-free seal replacement

🛡️No-leak internal pump design

$636.33

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌿 Spray Smart, Stay Clean, and Own Your Garden Game!

POWERFUL PRECISION - Delivers up to 150 PSI for professional-grade spraying power that tackles weeds and tough garden tasks effortlessly.
LEAK FREE CONFIDENCE - Internal no-leak pump keeps chemicals off your back and hands, ensuring safe, mess-free application every time.
MAINTENANCE MADE EASY - Quick, tool-free access to pump seals means less downtime and more time perfecting your lawn care routine.
VERSATILE SPRAY OPTIONS - Includes 4 nozzles—brass adjustable, 2 flat fans, and foaming—plus compatibility with Tee Jet nozzles for every application.
DURABILITY MEETS CONVENIENCE - Premium brass components and Viton seals resist wear and chemicals, while the 21-inch poly wand offers extended reach.

The Professional 190328 No Leak Pump Backpack Sprayer by Field King combines a high-pressure 150 PSI internal piston pump with a leak-proof design to deliver safe, efficient weed control. Featuring durable brass components, premium Viton seals, and a versatile 21-inch wand, it supports multiple nozzle types for tailored spraying. Easy, tool-free maintenance and a lockable shut-off valve make this sprayer a reliable choice for serious lawn and garden professionals.

Specifications

ASIN	B000AYHKUO
Brand	Field King
Customer Reviews	4.6 out of 5 stars 6,435 Reviews
Enclosure Material	Brass
Global Trade Identification Number	00841688002586, 30841688002587
Hose Length	21 Inches
Included Components	Nozzle
Item Weight	5.81 kg
Manufacturer Part Number	190328
Material	Brass
Maximum Pressure	150 Pound per Square Inch
Model Number	190328
Power Source	Hand Powered
Style	Adjustable,Lockable
Tank Volume	1 Gallons
UPC	841688002586 094716169090 657819404606

Reviews

J**T

Backpack sprayer

9.11.2025

O**O

Excellent sprayer, gets the job done

28.09.2019

T**G

No leaks, One Pump = lots of spray, works really well

5.07.2021

B**N

Good quality sprayer, no leaks or dribbles

10.04.2026

I**D

Game Changer for Spraying Weeds!

24.06.2023

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$636.33

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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