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 1-Gallon Pump Sprayer, Easy Use for Home & Garden | Durable lightweight tank; ideal for weed control, plant care and cleaning with adjustable nozzle, long hose and easy pump

Chapin 1-Gallon Pump Sprayer, Easy Use for Home & Garden | Durable lightweight tank; ideal for weed control, plant care and cleaning with adjustable nozzle, long hose and easy pump

Product ID: 673947

Details

Brand
Chapin
Color
Translucent
Material
Polyethylene
Recommended Uses For Product
Fertilizer
Tank Volume
1 Gallons

🎯Adjustable cone nozzle for precise spray control

💧1-gallon translucent tank for easy fluid monitoring

📏34-inch hose for extended reach and flexibility

$150.87

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Description

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

PRECISION SPRAY CONTROL - Switch seamlessly between targeted streams and broad sprays with the adjustable cone nozzle.
BUILT TO LAST MADE IN THE USA - Durable polyethylene tank with leak-resistant modular design backed by a 1-year warranty.
EFFORTLESS REFILLS MONITORING - Translucent funnel-top tank lets you refill spill-free and track fluid levels at a glance.
EXTENDED REACH REDUCED FATIGUE - 34-inch hose and ergonomic pump handle make yard work comfortable and efficient.
VERSATILE LAWN GARDEN POWERHOUSE - Perfect for fertilizers, pesticides, weed control, and general cleaning—your all-in-one sprayer.

The Chapin 20004 Pump Sprayer is a 1-gallon, lightweight, translucent polyethylene tank sprayer designed for professional-grade lawn and garden care. Featuring an ergonomic pump handle, adjustable cone nozzle, and a 34-inch hose, it delivers precise, versatile spraying for fertilizers, pesticides, and weed control. Proudly made in the USA with a leak-resistant modular design and backed by a 1-year warranty, it combines durability with user-friendly features to streamline your outdoor maintenance tasks.

Specifications

ASIN	B000E28UQU
Best Sellers Rank	#7 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1 in Lawn & Garden Sprayers
Brand Name	Chapin International
Color	Translucent White
Customer Reviews	4.4 4.4 out of 5 stars (79,877)
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	2.5"W x 15.25"H
Item Type Name	Pump Sprayer, 1-Gallon
Item Weight	2 Pounds
Manufacturer	Chapin International
Manufacturer Part Number	20004
Manufacturer Warranty Description	1-year limited
Material Type	Polyethylene (PE)
Maximum Pressure	60 Pound per Square Inch
Model Name	20004
Model Number	20004
Power Source	manual
Recommended Uses For Product	Fertilizer, Pest Control, Spraying Plants, Lawns, Watering, Weed Control
Style Name	1 Gallon
Tank Volume	1 Gallons
UPC	023883200008 023883200046
Unit Count	1.0 Count

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$150.87

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.

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