ThePipingMart Blog other What is Non Return Valve? Properties, Uses and Application

What is Non Return Valve? Properties, Uses and Application

Non Return Valve

Non-return valves are prevalent in various industries, and their importance cannot be overstated. A Non-return valve is a vital component that ensures fluid flow direction in one direction, preventing backflow. If you need to become more familiar with it, this post will give you the basics of non-return valves, including their uses, properties, and applications across different industries.

What is Non Return Valve?

Non-return valve, also known as a check valve, is a mechanical device designed to prevent backflow of fluids or gases. It allows fluid or gas flow through it in only one direction and stops any reverse motion. A non-return valve is essential for many applications, such as controlling the pressure of compounds flowing through pipes and limiting the reverse flow across pumps.

Non Return Valve Properties:

Also called check valves, non-return valves comprise a valve mechanism that enables the fluid to flow in one direction. The valve’s design, which typically involves a disc or other flat surfaces, prevents backflow. Check valves are made from various materials such as brass, PVC, stainless steel, and cast iron, often chosen based on factors like application, pressure and temperature requirements.

Non Return Valve Uses:

One of the most common uses of non return valves is in the water industry, which helps ensure that potable water avoids contamination. It also finds application in irrigation, fire protection systems, and the chemical industry, where it prevents hazardous materials from backing up into the pipes. Another prevalent use is with aquariums and fish ponds, which need durable, low-flow devices to maintain the right circulation rates.

Non Return Valve Application:

The application of non return valves transcends these uses along with various industries. In the energy and oil and gas industry, it controls fluid flow in pipelines and prevents overpressure, which can cause damage to equipment. In pneumatic or hydraulic applications, non return valves are critical, preventing fluid migration due to pressure differences and eliminating the need for separate shutoff valves.

How to Use Non Return Valves

It is essential to understand how to use non-return valves because this will impact their performance, too. Generally, these valves are installed in line, with the arrow on the body marking the flow direction of the fluid. It is also crucial to consider the valve’s size concerning the pipe diameter. Ensure the maximum allowable backpressure, temperature range, and flow rates are within the valve’s application guidelines.


In conclusion, the non return valve is a critical component in fluid flow systems. As outlined, it has a wide range of applications in various industries, and with the right understanding of its properties, uses, and applications, you can make informed decisions on its selection and installation. So, if you’re in the market for a non-return valve, remember these elements to pick the best fit for your needs.

Leave a Reply

Your email address will not be published. Required fields are marked *

Related Post