Axial check valves

An axial non-return valve is a valve that prevents the backflow of liquids or gases in a pipe. The valve consists of a housing with inlet and outlet connections and a valve mechanism inside. The mechanism normally opens in the direction of flow and closes to block the backflow.

These valves are used in various industrial applications and require regular maintenance to keep them working optimally. The use in high pressure pumping systems not only allows for better dynamic performance, but also a more durable design compared to other conventional check valves.

APPLICATIONS: Pumping stations Water treatment and supply Networks for the distribution of clean water, irrigation (filtered water) Fire protection networks.

FAQ on axial non-return valves

What is an axial non-return valve?

An axial check valve is a type of non-return valve that allows liquids to flow in one direction only. It is designed to prevent backflow in a pipework system, thus ensuring that the fluid flows in a controlled manner and in one direction.

How does an axial non-return valve work?

The valve works by allowing the liquid to flow in the intended direction. When the liquid flows in the desired direction, the valve opens due to the pressure of the liquid. However, if the fluid attempts to flow in the opposite direction, the valve closes automatically to prevent backflow. This is typically achieved by a spring-loaded mechanism or a gravity-assisted design.

What are the common applications for an axial non-return valve?

Axial check valves are used in various applications, including

Water and wastewater treatment
Oil and gas industry
Chemical processing
Power generation
HVAC systems
Fire protection systems

What are the advantages of using an axial non-return valve?

Low pressure drop: These valves typically have a low pressure drop, which means that they do not significantly impede the flow of liquid.
Fast response: They respond quickly to changes in flow direction and provide effective backflow protection.
Durability: Made from robust materials, they offer a long service life and can withstand harsh operating conditions.
Versatility: Suitable for a wide range of fluids, including water, oil, gas and chemicals.

What are the important considerations when choosing an axial non-return valve?

Flow rate: Make sure that the valve can handle the required flow rate.
Pressure rating: Check the maximum pressure the valve can withstand.
Material compatibility: Select a material that is compatible with the fluid to be transported.
Size: Select the appropriate size based on the pipework dimensions.
Temperature range: Ensure that the valve can be operated within the temperature range of your application.

What are the differences between an axial check valve and other types of check valves?

Axial vs. swing check valve: Axial check valves typically have a more streamlined design and lower pressure drop compared to swing check valves, which use a pivoting disc to block backflow.
Axial vs. ball check valve: Ball check valves use a ball to block backflow and are generally used for low-pressure applications, while axial check valves are suitable for a wider range of pressures.
Axial vs. piston check valve: Piston check valves use a piston to control the flow, which can provide a tighter seal, but may result in a higher pressure drop compared to axial check valves.

Axial check valves

Sub-Categories:

Non-Return Valves Ball Check Valves Disco Check Valves Foot Valves

Flanged Check Valves Double Check Valves Gestra Check Valves

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FAQ on axial non-return valves