Pneumatic throttle-check valve

Pneumatic throttle valve - throttles in one direction. In the category below, you will find check-throttle valves designed for pneumatic (air) installations. Valves of this type are used in machines and devices where compressed air is used. The valves allow the entire air flow (free air flow) in one direction, while the air stream is throttled in the other direction. Available versions of throttle-check valves: push-in or with thread and hose push-in. We also offer steel check-throttle valves - designed for power hydraulics ( hydraulic oil ) 

What are throttle-check valves ?

Throttle-check valves are pneumatic components used in compressed air systems, whose task is to regulate the air flow in one direction and allow free flow in the opposite direction. They are indispensable in systems where precise control of the operating speed of actuators or other pneumatic devices is necessary.

What does flow throttling involve?

Flow throttling is a process involving the reduction of the medium flow rate (e.g., compressed air) by regulating the flow cross-section in the valve. In the case of throttle-check valves, flow regulation is possible in only one direction, which allows for precise control of the actuator's operating speed without affecting the return movement, which occurs without resistance. In practice, flow throttling is performed by adjusting a needle or other control element in the valve, which changes the size of the flow opening. This type of regulation allows for optimal matching of the pneumatic system's operation to the application's requirements. How does the check function work in throttle-check valves? The check function in these valves allows free flow of the medium in the opposite direction, bypassing the throttling mechanism. Thanks to this, return movement in systems such as pneumatic actuators occurs quickly and without resistance. Such a design ensures efficiency and energy savings in the system.

Application of throttle-check valves

Throttle-check valves are widely used in various industries and pneumatic applications, such as: Actuator speed regulation – especially in processes requiring precise control of movement. Air flow control in complex pneumatic systems. Energy saving – through control of compressed air consumption.

What is a pneumatic throttle-check valve? 

A throttle-check valve is a component of pneumatic fittings that combines the functions of two devices: a check valve and a throttle valve. Its task is to enable free air flow in one direction and controlled, throttled flow in the opposite direction. This allows for precise regulation of the operating speed of pneumatic actuators, which translates into smooth and safe operation of the entire system.

How does a throttle-check valve work?

In the flow direction marked as 'free', the valve acts like a classic check valve – air flows without obstruction. In the opposite direction, the flow is restricted by a needle or adjustment screw, which allows for adjusting the flow rate. In this way, the user can precisely set the extension or return speed of the pneumatic actuator.

How does a throttle-check valve differ from a check valve?

A pneumatic check valve is a simpler design – its only function is to pass the medium in one direction and completely block the flow in the opposite direction. It does not provide the possibility of regulating the speed or flow rate. A throttle-check valve, on the other hand, has an additional throttling mechanism that allows for controlling the air flow in one of the directions, making it a much more functional and universal solution.

Where are throttle-check valves used?

Pneumatic throttle-check valves are used primarily in systems with pneumatic actuators double-acting, where independent regulation of the piston rod movement speed is necessary. They are also used in industrial installations, automation, assembly lines, and control systems where accurate air flow control is required.

Construction and advantages of throttle-check valves

Throttle-check valves are characterized by a slightly more complex design than traditional check valves. In addition to the spring mechanism, they contain a regulating element – a needle or screw, which allows for precise setting of the throttling degree. Their advantage is the possibility of smooth regulation, durability, and operational reliability in demanding industrial conditions.

Throttle-check valves in the Hydron offer

The Hydron store offer includes high-quality pneumatic throttle-check valves available in various variants and sizes, intended for use in modern pneumatic systems. All products have the necessary certificates and are made of durable materials, which ensures long life and failure-free operation.