A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction.

Check valves, also known as nonreturn or one-way valves, are designed to enable fluid to flow one way in a pipeline. Because of their simple design, check valves generally operate without automation or …

Aug 18, 2024 · A one-way check valve allows flow in only one direction. Typically, an arrow on the valve's housing indicates the flow direction. If there is no arrow, use your finger or a narrow rod to …

Choose from our selection of one-way flow valves, including threaded check valves, check valves, and more. Same and Next Day Delivery.

Dec 29, 2025 · A check valve, often referred to as a non-return valve, is a simple mechanical device designed to permit the flow of fluid—whether liquid or gas—in only one direction.

One–way check valves are designed for a unidirectional flow in a device. They have a low and immediate forward flow with little pressure drop and very good sealing performance in reverse flow …

Jul 28, 2025 · In this guide, we’ll break down what one way valves are, how they work, the most common types, and why Eagle Valves has become a go-to choice for engineers and DIYers worldwide.

In this comprehensive guide, we will explore the nuances of the Check Valve and One-Way Valve, examining their historical development, operational characteristics, and where each type is best utilized.

GASHER 2PCS Brass Check Valve DN15 1/2" Female and Male Thread, Backflow Prevention, One Way Check Valves Add to cart

Jul 16, 2024 · A one-way valve, also known as a check valve or non-return valve, is a mechanical device that permits fluid to flow in only one direction— from the inlet to the outlet —and automatically …