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

Field King 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 powerful pump

🔧Tool-free seal replacement

🛡️No-leak internal pump design

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VT126913

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌿 Spray smart, work sharp — the pro’s choice for flawless lawn care!

BUILT TO LAST - Premium brass components and lockable shut-off ensure durability and reliable control.
POWERFUL PRECISION - Delivers up to 150 PSI for professional-grade spraying performance every time.
LEAK FREE CONFIDENCE - Internal no-leak pump keeps chemicals off your back for safer, cleaner use.
EFFORTLESS MAINTENANCE - Quick, tool-free seal changes mean less downtime and more productivity.
VERSATILE WAND NOZZLES - Durable 21-inch poly wand with premium Viton seals plus 4 nozzles including brass adjustable and foaming options.

The Field King Professional 190328 Backpack Sprayer features a no-leak internal piston pump delivering up to 150 PSI, ensuring safe and efficient chemical application. Equipped with a durable 21-inch poly wand and premium Viton seals, it handles wettable powders and liquids with ease. Its brass lockable shut-off and in-line filter provide reliable control, while tool-free seal replacement keeps maintenance quick. Includes 4 versatile nozzles and supports Tee Jet attachments, making it the ultimate sprayer for professional-grade lawn and garden care.

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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