---
product_id: 235340688
title: "EVIL ENERGY 3/8\" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (10mm OD,2PCS)"
brand: "evil energy"
price: "S$26"
currency: SGD
in_stock: true
reviews_count: 8
category: "Evil Energy"
url: https://www.desertcart.sg/products/235340688-evil-energy-3-8-fuel-check-valve-one-way-inline
store_origin: SG
region: Singapore
---

# 0.2–6 bar working pressure range 6061-T6 aluminum alloy build -22℉ to 266℉ operating temperature EVIL ENERGY 3/8" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (10mm OD,2PCS)

**Brand:** evil energy
**Price:** S$26
**Availability:** ✅ In Stock

## Summary

> ⛽ Keep your engine primed and pressure steady — never miss a start again!

## Quick Answers

- **What is this?** EVIL ENERGY 3/8" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (10mm OD,2PCS) by evil energy
- **How much does it cost?** S$26 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/235340688-evil-energy-3-8-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

- • **All-Weather Performance:** Designed to perform flawlessly from freezing -22℉ to scorching 266℉, perfect for any climate.
- • **Effortless Installation:** Compact, lightweight design with barb inlet/outlet for quick, hassle-free setup in carburetor and low-pressure fuel lines.
- • **Reliable Fuel Flow Control:** Stainless steel spring ensures one-way fuel flow, preventing backflow and stabilizing system pressure.
- • **Wide Pressure Compatibility:** Operates seamlessly between 0.2 and 6 bar (2.9–87 psi) to suit diverse fuel systems.
- • **Precision Engineered Durability:** Crafted from high-strength 6061-T6 aluminum with black anodized finish for unmatched corrosion resistance.

## Overview

The EVIL ENERGY 3/8" Fuel Check Valve is a premium inline non-return valve made from durable 6061-T6 aluminum alloy with a corrosion-resistant black anodized finish. Engineered to maintain stable fuel pressure with a stainless steel spring, it supports a wide pressure range (0.2–6 bar) and extreme temperatures (-22℉ to 266℉). Ideal for carbureted and low-pressure fuel systems using diesel, gasoline, and other fluids, it offers easy installation and reliable performance that prevents fuel backflow and ensures instant startups.

## Description

Buy EVIL ENERGY 3/8" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (10mm OD,2PCS): Vacuum Tee Connectors - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Game-Changer for Cold Starts – Must-Have for Older Rigs! - I installed the Evil Energy 3/8" inline fuel check valve along with their 300 PSI 3/8" fuel hose on my 1998 Jeep Grand Cherokee (5.2L) — and let me tell you, the difference was night and day. My Jeep already had a new fuel pump and strong pressure readings, but the pressure would drop quickly after shutdown, making cold starts a chore. After adding the check valve into the line, the fuel pressure now holds steady, and startups are instant — no more pumping the throttle or long cranks. It genuinely saved my carbureted-style motor’s life. The valve came as a pair, easy to install, and the directional arrow makes orientation simple. The hose is tough, cleanly built, and rated at 300 PSI, so you know it’s not cheap junk. Whether you're fighting bleed-off issues or just want to protect your fuel system, this is a cheap, high-quality fix. Can’t recommend it enough!
Review: Very well made and works perfectly! - A diesel mechanic recommended that I install a check valve in the fuel line near the fuel tank to solve the problem of my boat engine stalling 20-30 seconds after starting. This problem had plagued me for months and a I had fruitlessly spent a lot of money try to 'fix' the problem. It turned out that this very inexpensive check valve solved the issue! Yea! I am VERY happy!! It was super simple to install it in the fuel line near the tank. It is really well made and I now have a spare because I only needed one of them.

## Features

- Specifications: 3/8 inch (10 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 |
|---------------|-------|
| Brand | EVIL ENERGY |
| Exterior Finish | Stainless Steel |
| Inlet Connection Size | 0.38 Inches |
| Inlet Connection Type | National Pipe Tapered |
| Material | Aluminum |
| Outlet Connection Type | National Pipe Tapered |

## Product Details

- **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

## Images

![EVIL ENERGY 3/8" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (10mm OD,2PCS) - Image 1](https://m.media-amazon.com/images/I/61U9+-XgtcL.jpg)
![EVIL ENERGY 3/8" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (10mm OD,2PCS) - Image 2](https://m.media-amazon.com/images/I/61XYCesiGpL.jpg)
![EVIL ENERGY 3/8" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (10mm OD,2PCS) - Image 3](https://m.media-amazon.com/images/I/71DvOpr11HL.jpg)
![EVIL ENERGY 3/8" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (10mm OD,2PCS) - Image 4](https://m.media-amazon.com/images/I/71Hg+Inh5eL.jpg)
![EVIL ENERGY 3/8" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black (10mm OD,2PCS) - Image 5](https://m.media-amazon.com/images/I/71SJJdz9QTL.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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Game-Changer for Cold Starts – Must-Have for Older Rigs!
*by J***L on April 16, 2025*

I installed the Evil Energy 3/8" inline fuel check valve along with their 300 PSI 3/8" fuel hose on my 1998 Jeep Grand Cherokee (5.2L) — and let me tell you, the difference was night and day. My Jeep already had a new fuel pump and strong pressure readings, but the pressure would drop quickly after shutdown, making cold starts a chore. After adding the check valve into the line, the fuel pressure now holds steady, and startups are instant — no more pumping the throttle or long cranks. It genuinely saved my carbureted-style motor’s life. The valve came as a pair, easy to install, and the directional arrow makes orientation simple. The hose is tough, cleanly built, and rated at 300 PSI, so you know it’s not cheap junk. Whether you're fighting bleed-off issues or just want to protect your fuel system, this is a cheap, high-quality fix. Can’t recommend it enough!

### ⭐⭐⭐⭐⭐ Very well made and works perfectly!
*by B***S on September 26, 2025*

A diesel mechanic recommended that I install a check valve in the fuel line near the fuel tank to solve the problem of my boat engine stalling 20-30 seconds after starting. This problem had plagued me for months and a I had fruitlessly spent a lot of money try to 'fix' the problem. It turned out that this very inexpensive check valve solved the issue! Yea! I am VERY happy!! It was super simple to install it in the fuel line near the tank. It is really well made and I now have a spare because I only needed one of them.

### ⭐⭐⭐⭐⭐ Money saved just as good as any other
*by D***Y on January 2, 2026*

Works great

## Frequently Bought Together

- EVIL ENERGY 3/8" Fuel Check Valve One Way Inline Non Return Diesel Gasoline Black(10mm OD,2PCS)
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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-01-23*