VU inline check valves 

Hydraulic check valve

The check valves offered in our store are reliable hydraulic components that ensure free medium flow in one direction and block its return in the opposite. Thanks to their functionality, they are a key element of every hydraulic system, guaranteeing system safety and efficiency. Check valves, also known as safety valves, are designed to ensure liquid flow in only one direction. In the other direction, flow is blocked by a ball. The valves are most often found under the name "ball check valves". 

One-way hydraulic valve 

One-way hydraulic valves, also known as check valves, are essential components of hydraulic systems that allow the working fluid to flow in only one direction. Their main task is to prevent hydraulic oil backflow, which ensures the stability and safe operation of the entire system. Hydron offers a wide selection of check valves, adapted to various applications and specific technical requirements. Check our offer and choose reliable solutions for your hydraulic system!

What is a check valve ?

A check valve is a hydraulic element that allows liquid to flow in one direction while preventing it from backing up. Its operation is based on a simple but effective design that automatically closes the flow when the liquid tries to flow in the opposite direction. Thanks to this, check valves are a key element of hydraulic systems, protecting systems against damage and ensuring their safe and efficient operation.

Technical parameters of VU check valves : 

• operating pressure: max 500 bar
• cracking pressure: 0.5/1 bar
• nominal diameter: DN6 –DN50
• sealing types: NBR, FKM, EPDM, MVQ
• connection types: BSP ranging from 1/4 to 2”
• operating temperature: in the range of -10°C to 100°C. 

Download : VU check valves catalog sheet

Construction of a check valve

Highest quality materials: Body made of galvanized steel, and internal elements of hardened and ground steel, which guarantees high durability and resistance to wear. Precise construction: The valves have a conical seal that ensures total tightness and no leakage. Flexibility of use: Available variants with different threads (including NPT) and stainless steel bodies, allowing for adaptation to specific needs. Adjustable cracking pressure: Possibility to choose cracking pressure from 0.4 to 8 bar, allowing for a perfect fit to the system requirements.

Application of check valves :

Check valves are used in a wide range of hydraulic systems, allowing the medium to flow freely from the power source to the actuators and blocking its backflow. They are indispensable in systems requiring the maintenance of constant pressure and in places where protection against backflow is crucial.

Check valve models 

We offer valves in various thread sizes, from 1/8” to 2”, with maximum flow reaching up to 650 l/min and working pressure up to 350 bar. Thanks to a wide range of sizes and configurations, our valves meet the requirements of even the most demanding installations. Choose proven solutions in the field of power hydraulics. Check our range of check valves. The valves we offer are internally threaded - available with BSP inch threads 1/4", 3/8", 1/2", 3/4", 1", 1 1/4" 

Other types of check valves in the HYDRON offer

In the Hydron store, we offer a wide range of check valves, adapted to various applications and customer needs. Our offer includes:

• Hydraulic check valves – classic valves for hydraulic systems that ensure reliable flow in one direction, eliminating the risk of liquid backflow.

• Adjustable check valves – allow for additional flow regulation, which increases control over the system operation. Ideal for more advanced applications requiring precision.

• VRF throttle check valves – combine the functions of a check valve and a throttle valve, enabling flow control in one direction and free flow in the other. 

• Check valves for pneumatics. In addition to valves for hydraulics, we also offer solutions designed for pneumatic systems, which are widely used in compressed air systems: Check valves for pneumatics – effectively protect the system against air backflow, ensuring its smooth and reliable operation. Throttle-check valves – enable both flow rate control and operation in one direction, making them perfect for complex pneumatic systems.