General description The 2pcs 3/8' 10mm Fuel Line One Way Check Valve is designed to ensure the efficient flow of fluids while preventing backflow. Made from durable aluminum alloy and featuring a 304 stainless steel spring, this check valve is ideal for various applications. Technical specifications Material: Aluminum alloy and 304 stainless steel spring 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 ℉ Usage Suitable for water, gasoline, diesel, oil, and other fluids (methanol is not recommended) Ideal for carburetors and low pressure fuel systems