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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⚡ Power your ride with precision—never let fuel flow hold you back!

HIGH PRESSURE RESILIENCE - Operates seamlessly up to 6 bar (87 psi), ensuring reliable fuel flow under demanding conditions.
WIDE TEMPERATURE TOLERANCE - Designed to perform flawlessly from freezing -22℉ to scorching 266℉ environments.
COMPACT EASY INSTALLATION - 3/8 inch (10mm) inline design fits standard fuel lines, making upgrades effortless and efficient.
VERSATILE FLUID COMPATIBILITY - Compatible with diesel, gasoline, water, oil, and air—perfect for diverse fuel system needs.
PRECISION ENGINEERED DURABILITY - Crafted from premium aluminum alloy and stainless steel for long-lasting, corrosion-resistant performance.

The EVIL ENERGY 3/8" Fuel Check Valve is a robust inline non-return valve built with aluminum alloy and stainless steel components. It supports fuel systems with pressures up to 6 bar and operates reliably across a wide temperature range (-22℉ to 266℉). Compatible with multiple fluids including diesel and gasoline, this compact valve ensures efficient, one-way fuel flow for enhanced engine performance.

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€ 37.77

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Finlandstore

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TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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Material	Aluminum
Brand	EVIL ENERGY
Exterior Finish	Stainless Steel
Inlet Connection Size	0.38 Inches
Inlet Connection Type	National Pipe Tapered
Outlet Connection Type	National Pipe Tapered
Maximum Operating Pressure	6 Bars
Number of Ports	2
Outlet Connection Size	0.38 Inches
Manufacturer	Speedwow Tuning
Part Number	EV01342S10BK
Item Weight	1.44 ounces
Package Dimensions	4.72 x 4.17 x 1.1 inches
Item model number	EV01342S10BK
Size	3/8
Color	Black
Item Package Quantity	1
Number Of Pieces	2
Batteries Included?	No
Batteries Required?	No

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

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