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⛽ Keep your fuel flowing forward — no backtracking, just pure power.
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.
| ASIN | B09TT4BVB5 |
| Best Sellers Rank | #1,650 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Exhaust Check Valves |
| Brand | EVIL ENERGY |
| Brand Name | EVIL ENERGY |
| Connector Type | Barb |
| Customer Reviews | 4.5 out of 5 stars 3,077 Reviews |
| 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 |
| Item dimensions L x W x H | 3.94 x 0.79 x 0.79 inches |
| Manufacturer | EVIL ENERGY |
| Manufacturer Part Number | EV01342S12BK |
| Material | Aluminum |
| Material Type | Aluminum |
| Maximum Pressure | 6 Bars |
| Model Number | EV01342S12BK |
| 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 |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specification Met | ASME, ANSI, API |
| Thread Size | 1/2 inch |
| Thread Type | NPT |
| Unit Count | 2 Count |
| Valve Type | Check Valve |
J**R
I don't think you will be disappointed
Great quality, works as advertised. Can be disassembled if need be. Love em!
M**X
Great quality and great price
These work great and the price is right.
R**B
Quality vacuum hoses
Tested them all, they worked great. Solved my issues perfectly.
T**R
Great product
On time delivery and great product
B**T
Fuel check valve
Works great
C**N
Great for Jeep Tj
Works great on my jeep tj. New fuel pump a few months back and the check valve went bad pretty fast. I chased a lot of issues( maintenance items that needed serviced anyways) but no more cold start issues. Fires right up. Will update in a month or so if it dies on me. But they’re cheap, and only take a few minutes to swap out
M**S
Have not used yet.
Bought for a dual oil catch can setup. I never did use these.. looks well made.
T**N
Not a strong check valve.
These have a very flimsy rubber diaphragm that will dislodge more than it'll stay in place and cause fuel flow problems because it rolls into the outlet nozzle and blocks fuel flow. Happened on 3 different ones in a 55psi fuel injection system gas line. Toss them. Not robust.
C**S
Quality and correctly sized
Nice construction, used for pond water feature rather than fuel so s tad over engineered for the purpose but I like that. Good fit well made.
R**.
Pesimo
Pesima calidad, no es de la medida que describe (mas chica) y no soporta mas de 5 psi de presión, no lo puedo devolver porque ya lo use!
M**D
Work will
Recommend
Y**D
The Flow Rate not what you can expected
sure was made from good material , but the flow not what you can expected.
G**D
As expected
Works perfect
Trustpilot
3 days ago
2 days ago