Would this valve be effective in a air/vapor system?

yes, the valve can works in air system

Can this be used on a submersible 600gph water pump for the basement?

This is a small check valve used for something like allowing a vacuum to be pulled in a single direction. It would not be appropriate for use with a fluid pump unless it is simply being used as part of a venting system to remove air from the pump prior to use.

Do you install before fuel pump or close to carburetor

Hi, it depends on your application, it usually installs close to the tank but you can put it closer to the fuel pump if you want. in any event it goes before the fuel pump as your trying to stop flow back.

Will this fit to Mazda Protege 2.0? Reference: 8574-20-309

This check valve will fit any 1/4 or 6mm fuel line.

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EVIL ENERGY 3/8" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (10mm OD,2PCS)

EVIL ENERGY 3/8" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (10mm OD,2PCS)

Product ID: 235340688

Details

Brand
EVIL ENERGY
Exterior Finish
Stainless
Inlet Connection Size
0.38 Inches
Inlet Connection Type
National Pipe
Material
Aluminum
Maximum Operating Pressure
6 Bars

🔥0.2–6 bar pressure range

⚙️6061-T6 aluminum alloy build

🌡️-22℉ to 266℉ operating temp

MX$755

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Description

⚡ Power your ride with precision—never let fuel flow backwards again!

TEMPERATURE TOUGHNESS - Reliable performance from freezing -22℉ up to scorching 266℉—built to handle extreme environments.
ONE WAY FLOW ASSURANCE - Stainless steel spring mechanism guarantees zero backflow, maintaining optimal system pressure and efficiency.
EFFORTLESS INSTALLATION - Compact, lightweight design with barb inlet/outlet for quick, hassle-free setup in any fuel line system.
UNMATCHED PRESSURE CONTROL - Operates flawlessly within a wide 0.2 to 6 bar range, ensuring stable fuel flow under varying conditions.
PRECISION ENGINEERED DURABILITY - Crafted from high-strength 6061-T6 aluminum with black anodized finish for ultimate corrosion and wear resistance.

The EVIL ENERGY 3/8" Fuel Check Valve is a robust, black anodized aluminum inline valve designed for diesel and gasoline systems. Featuring a stainless steel spring for one-way flow, it supports pressures from 0.2 to 6 bar and operates reliably between -22℉ and 266℉. Ideal for carburetors and low-pressure fuel lines, this compact valve ensures stable fuel delivery and prevents backflow, making it a must-have upgrade for professional-grade vehicle maintenance.

Specifications

ASIN	B08JJ1F79D
Best Sellers Rank	#2,149 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Exhaust Check Valves
Brand Name	EVIL ENERGY
Connector Type	Barb
Customer Reviews	4.5 4.5 out of 5 stars (3,134)
Exterior Finish	Stainless Steel
Inlet Connection Size	0.38 Inches
Inlet Connection Type	National Pipe Tapered
Manufacturer	EVIL ENERGY
Manufacturer Part Number	EV01342S10BK
Material Type	Aluminum
Maximum Pressure	6 Bars
Model Number	EV01342S10BK
Number of Pieces	2
Number of Ports	2
Outlet Connection Size	0.38 Inches
Outlet Connection Type	National Pipe Tapered
Set Name	2
Size	3/8
Thread Size	3/8 inch (10mm)
Thread Type	NPT
Unit Count	2.0 Count
Valve Type	check valve

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MX$755

Duties & taxes included

In stock

Sold byAmazon MexicoDelivered 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 Mexico.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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