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 1/2" Fuel Check Valve One Way Inline Non Return, Black 12mm OD

EVIL ENERGY 1/2" Fuel Check Valve One Way Inline Non Return, Black 12mm OD

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

💨Stainless steel spring ensures one-way fuel flow

🔥Handles up to 6 bar pressure for high-performance systems

⚙️6061-T6 aluminum alloy for ultimate durability

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Description

⚡ Power your ride with precision — no backflow, no compromises!

WIDE OPERATING RANGE - Performs flawlessly from -22℉ to 266℉, perfect for diverse environments and conditions.
RUGGED ALUMINUM BUILD - Black anodized 6061-T6 alloy resists corrosion and wear for long-lasting reliability.
PRECISION FLOW CONTROL - Stainless steel spring guarantees zero backflow, maintaining stable fuel pressure every time.
EFFORTLESS INSTALLATION - Compact, lightweight design with barb inlet/outlet enables quick, hassle-free setup.
VERSATILE COMPATIBILITY - Ideal for carburetors and low-pressure fuel systems; supports petrol, diesel, gas, oil, air, and water.

The EVIL ENERGY 1/2" Fuel Check Valve is a high-strength, black anodized 6061-T6 aluminum inline valve featuring a stainless steel spring for reliable one-way fuel flow. Rated for pressures up to 6 bar and temperatures from -22℉ to 266℉, it ensures stable system performance in various fuel and fluid applications. Compact and easy to install with barb connectors, it’s the go-to choice for professional-grade fuel system maintenance and upgrades.

Specifications

ASIN	B09TT4BVB5
Best Sellers Rank	#1,467 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 (3,159)
Exterior Finish	Stainless Steel
Inlet Connection Size	0.5 inches
Inlet Connection Type	National Pipe Tapered
Item Dimensions	3.94 x 0.79 x 0.79 inches
Manufacturer	EVIL ENERGY
Manufacturer Part Number	EV01342S12BK
Material Type	Aluminum
Maximum Pressure	6 bar
Model Number	EV01342S12BK
Number of Items	2
Number of Pieces	2
Number of Ports	2
Outlet Connection Size	0.5 inches
Outlet Connection Type	National Pipe Tapered
Set Name	2
Size	1/2
Specification Met	ASME, ANSI, API
Thread Size	1/2 inch
Thread Type	NPT
Unit Count	2 Count
Valve Type	Check Valve

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NZ$44

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered 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 New Zealand.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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