--- product_id: 438305425 title: "EVIL ENERGY 1/2\" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (12mm OD,2PCS)" brand: "evil energy" price: "COP 102473" currency: COP in_stock: true category: "Evil Energy" url: https://www.desertcart.co/products/438305425-evil-energy-1-2-fuel-check-valve-one-way-inline store_origin: CO region: Colombia --- # One-way stainless steel spring prevents fuel backflow Works flawlessly from -22℉ to 266℉ 6061-T6 aluminum alloy for ultimate durability EVIL ENERGY 1/2" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (12mm OD,2PCS) **Brand:** evil energy **Price:** COP 102473 **Availability:** ✅ In Stock ## Summary > 🔧 Keep your fuel flow flawless — no backflow, no downtime! ## Quick Answers - **What is this?** EVIL ENERGY 1/2" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (12mm OD,2PCS) by evil energy - **How much does it cost?** COP 102473 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/438305425-evil-energy-1-2-fuel-check-valve-one-way-inline) ## Best For - evil energy enthusiasts ## Why This Product - Trusted evil energy brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted by Thousands:** Ranked #1 in Automotive Replacement Exhaust Check Valves with 4.5-star rating from over 3,000 users. - • **Effortless Installation:** Compact, lightweight design with barb inlet/outlet ensures quick, hassle-free setup. - • **Versatile Compatibility:** Perfect for carburetors and low-pressure fuel systems using diesel, gasoline, petrol, water, oil, and air. - • **Precision Pressure Control:** Operates seamlessly within 0.2–6 bar (2.9–87 psi) to maintain stable fuel system pressure. - • **Built to Last, Engineered to Perform:** Premium black anodized 6061-T6 aluminum resists corrosion and wear for long-term reliability. ## Overview The EVIL ENERGY 1/2" Fuel Check Valve is a high-performance, black anodized aluminum inline valve designed for reliable one-way fuel flow in diesel and gasoline systems. Featuring a stainless steel spring and operating across a wide temperature and pressure range, it ensures stable system pressure and prevents backflow. Compact and easy to install, this valve is a top-rated choice for professional-grade automotive and fuel system applications. ## Description Buy EVIL ENERGY 1/2" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (12mm OD,2PCS): Vacuum Tee Connectors - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - Specifications: 1/2 inch (12 mm) OD. Minimum upstream pressure: 0.2 bar (2.9 psi). Working pressure range: 0.2–6 bar (2.9–87 psi). Operating temperature range: -22℉ to 266℉ for reliable performance in various conditions. - Material: Made of high-strength 6061-T6 aluminum alloy, the check valve is black anodized for enhanced corrosion and wear resistance. - Feature: This EVIL ENERGY fuel line check valve is equipped with a stainless steel spring that allows fluid to flow in only one direction, effectively preventing fuel backflow and maintaining stable system pressure. - Installation: The one way valve is compact and lightweight with barb inlet/outlet for quick, hassle-free setup in fuel lines. - Application: The EVIL ENERGY fuel check valve is widely used in carburetor and low-pressure fuel systems. It is compatible with various media such as water, petrol, diesel, gas, oil, air, and other fluids.(Methanol is not recommended) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09TT4BVB5 | | Best Sellers Rank | #2,103 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 (3,139) | | 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 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 | ## Product Details - **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 - **Maximum Operating Pressure:** 6 bar - **Number of Ports:** 2 - **Outlet Connection Size:** 0.5 inches - **Outlet Connection Type:** National Pipe Tapered ## Images ![EVIL ENERGY 1/2" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (12mm OD,2PCS) - Image 1](https://m.media-amazon.com/images/I/612GUm9VBeL.jpg) ![EVIL ENERGY 1/2" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (12mm OD,2PCS) - Image 2](https://m.media-amazon.com/images/I/71aqzyETWuL.jpg) ![EVIL ENERGY 1/2" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (12mm OD,2PCS) - Image 3](https://m.media-amazon.com/images/I/617l8DbAXFL.jpg) ![EVIL ENERGY 1/2" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (12mm OD,2PCS) - Image 4](https://m.media-amazon.com/images/I/71oTUMoC5HL.jpg) ![EVIL ENERGY 1/2" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (12mm OD,2PCS) - Image 5](https://m.media-amazon.com/images/I/719xyD0rmEL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Would this valve be effective in a air/vapor system?** A: yes, the valve can works in air system **Q: Can this be used on a submersible 600gph water pump for the basement?** A: 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. **Q: Do you install before fuel pump or close to carburetor** A: 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. **Q: Will this fit to Mazda Protege 2.0? Reference: 8574-20-309** A: This check valve will fit any 1/4 or 6mm fuel line. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co/products/438305425-evil-energy-1-2-fuel-check-valve-one-way-inline](https://www.desertcart.co/products/438305425-evil-energy-1-2-fuel-check-valve-one-way-inline) --- *Product available on Desertcart Colombia* *Store origin: CO* *Last updated: 2026-07-31*