Does this unit have a "release pressure valve" (used for expelling air safely from container before opening)?

No. It does not have a release valve. You have to turn the handle to release the pressure. Use caution if you are using dangerous chemicals as it can blow back at you.

Could we use this to spray pesticides as mist? If yes, then how can we do that setting as I tried, but couldn't find such setting of nozzle.

I wanted it to mist too, but couldn't get it to do that. Even if you adjust the nozzle to spray as opposed to stream, it's still not exactly a fine mist.

Does anyone know how many SQFT two gallons will cover?

It will vary based on the product you are using so read the directions carefully for every product you spray. But in general, 1 gallon for 1,000 sq. ft. That said, I just used it on a lawn bowling green which is about 14,000 sq. ft. The pesticide I used said 1 gallon to cover 1,000 sq. ft. That would have been 12 gallons to cover the green, but when I had finished I used half that amount. This may have been because I walked too fast (I walked about the pace I do when I spread fertilizer). So, depending on how fast you walk, how comprehensive you want your coverage to be, and what the pesticide label suggest, I would say 1 gallon covers at least 1,000 sq. ft and at most 2,000 sq. ft. I also recommend using a dye/colorant so you can tell where you have sprayed and how think the coverage is.

Where is it made? China?

China/USA, either way..horrible product. Brand new from the box and wouldn't spray even a drop. Absolute waste.

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Chapin 20000 Poly Lawn and Garden Sprayer For Fertilizer, Herbicides and Pesticides, 1 Gallon

Chapin 20000 Poly Lawn and Garden Sprayer For Fertilizer, Herbicides and Pesticides, 1 Gallon

Product ID: 393643562

Details

Brand
Chapin
Colour
White
Item Weight
2.03 Pounds
Product Dimensions
19.4W x 38.7H
Tank Volume
1 Gallons

💧1 Gallon translucent tank

📏34-inch PVC hose reach

🛠️Anti-clog SureSpray® filter

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Description

🌿 Spray Smarter, Not Harder — Your Garden’s New MVP!

PROUDLY MADE IN THE USA - Crafted with global materials and backed by a 1-year warranty plus dedicated US-based support.
LIGHTWEIGHT ERGONOMIC DESIGN - Comfortable pump handle and lightweight build make long garden sessions fatigue-free.
CLEAR VISIBILITY FOR SMART USAGE - Translucent polyethylene tank lets you monitor fluid levels instantly—no guesswork, no spills.
EFFORTLESS MAINTENANCE RELIABILITY - Built-in anti-clog filter keeps debris out, ensuring uninterrupted, consistent spraying every time.
PRECISION CONTROL AT YOUR FINGERTIPS - Adjustable poly cone nozzle for tailored spray patterns, from gentle shower to powerful stream.

The Chapin 20000 Poly Lawn and Garden Sprayer is a 1-gallon, hand-powered sprayer designed for professional-grade lawn care. Featuring a translucent polyethylene tank for easy fluid monitoring, a 34-inch PVC hose for extended reach, and an anti-clog SureSpray® filter for consistent performance, it delivers precision spraying for fertilizers, herbicides, and pesticides. Lightweight and ergonomically designed, it offers comfort during prolonged use and is proudly made in the USA with a 1-year warranty and dedicated customer support.

Specifications

ASIN	B000E28UQU
Best Sellers Rank	#102,110 in Garden & Outdoors ( See Top 100 in Garden & Outdoors ) #991 in Sprayers
Brand	Chapin International
Colour	White
Country of Publication	USA
Customer Reviews	4.4 out of 5 stars 75,238 Reviews
Global Trade Identification Number	00023883200008
Hose Length	34 Inches
Included Components	Poly Extension Wand, PVC Hose, Adjustable Cone Nozzle, Ergonomic Pump Handle
Item Dimensions W x H	19.4W x 38.7H Centimeters
Item Weight	2 Pounds
Manufacturer Part Number	20004
Maximum Pressure	60 Pound per Square Inch
Model Name	Lawn and Garden Sprayer
Model Number	20004
Power Source	Hand Powered
Product Dimensions	19.4W x 38.7H Centimeters
Style	Standard Packaging
Tank Volume	1 Gallons
UPC	023883200008 023883200046
Unit Count	128.0 Fluid Ounces

Reviews

S**D

6.11.2023

J**S

18.04.2026

L**V

19.03.2026

A**R

9.02.2026

K**M

12.10.2025

N**R

4.01.2022

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