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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1/2" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (12mm OD,2PCS)

Product ID: 438305425

Details

Brand
EVIL ENERGY
Exterior Finish
Stainless
Inlet Connection Size
0.5 Inches
Inlet Connection Type
National Pipe
Item dimensions L x W x H
3.94 x 0.79 x
Material
Aluminum

🔥0.2–6 bar pressure range

⚙️12mm OD precision fit

❄️-22℉ to 266℉ temp resilience

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Description

⛽ Keep your fuel flowing forward — no backtracking, just pure power.

PRECISION ENGINEERED FIT - 12mm outer diameter ensures seamless integration with standard fuel lines for hassle-free installation.
ROBUST PRESSURE HANDLING - Operates reliably between 0.2 and 6 bar, maintaining stable fuel flow under varying engine demands.
CORROSION RESISTANT BUILD - Crafted from black anodized 6061-T6 aluminum alloy, designed to withstand wear and harsh environments.
ONE WAY FUEL FLOW ASSURANCE - Stainless steel spring mechanism prevents backflow, protecting your engine and fuel system integrity.
EXTREME TEMPERATURE DURABILITY - Performs flawlessly from freezing -22℉ to scorching 266℉, perfect for all-season reliability.

The EVIL ENERGY 1/2" Fuel Check Valve is a compact, high-strength inline non-return valve designed for diesel and gasoline systems. Featuring a 12mm outer diameter, it supports pressures from 0.2 to 6 bar and operates reliably across a wide temperature range (-22℉ to 266℉). Made from black anodized 6061-T6 aluminum with a stainless steel spring, it prevents fuel backflow, ensuring stable system pressure and protecting your engine. Ideal for carburetor and low-pressure fuel lines, this valve offers quick installation and durable performance for professional-grade fuel management.

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₩41134

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In stock

Sold byAmazon South KoreaDelivered 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 South Korea.

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Brand	EVIL ENERGY
Exterior Finish	Stainless Steel
Inlet Connection Size	0.5 Inches
Inlet Connection Type	National Pipe Tapered
Item dimensions L x W x H	3.94 x 0.79 x 0.79 inches
Material	Aluminum

1/2" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (12mm OD,2PCS)

Details

Details

Description

Specifications

Common Questions