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Throttle check valves
Discover our high-quality throttle check valves for precise flow and speed control in hydraulic systems. These valves combine throttling and check functions in a single
component and allow an adjustable flow rate in one direction as well as an almost unobstructed return flow in the opposite direction. Learn more...
component and allow an adjustable flow rate in one direction as well as an almost unobstructed return flow in the opposite direction. Learn more...
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Thanks to their robust metal construction, long-life seals and high media resistance, these valves are ideally suited for mechanical engineering, mobile hydraulics, industrial automation and many other sectors. In the Hydromot shop you will find throttle check valves in line-mounted design for different requirements regarding flow rate, operating pressure and connection size – from compact G 1/4'' versions to high-performance G 3/4'' models. You can choose between versions with fine adjustment for maximum precision or standard throttle check valves for cost-effective and reliable solutions in your hydraulic system.
Frequently Asked Questions (FAQ) on Throttle Check Valves
What is a throttle check valve and what is its main function?
Throttle check valves are combined valves specifically designed for precise control of fluid flow in hydraulic systems. They combine the functionality of a throttle (flow control) valve and a check valve in a single component.
- Throttled flow: in one direction
- Free flow: in the opposite direction
How do the throttle function and the check function work in these valves?
The two functions operate as follows:
Throttle function:
- Limitation of the flow rate by means of an adjustable restriction of the cross-section inside the valve
Check function:
- Flow is throttled in one direction only
- Almost free-flow (low pressure drop) is possible in the opposite direction
This makes it possible, for example, to finely control the extension of a cylinder while allowing retraction to occur without braking.
In which applications are throttle check valves typically used?
Typical application areas include:
- Mechanical engineering and industrial automation
- Mobile hydraulics
- Hydraulic systems for speed control
- Controlled lowering of loads on cylinders and hydraulic motors
- Pneumatic systems for precise motion control
What are the advantages of throttle check valves?
The main advantages are:
- Precise control of cylinder and actuator speed
- High quality and long service life
- Easy integration into existing systems
- Universal use in a wide range of hydraulic and pneumatic systems
Which materials are commonly used?
Common materials for throttle check valves are:
- Brass: robust and cost-effective
- Stainless steel: corrosion-resistant, ideal for the chemical and food industries
- Aluminium: lightweight, for less demanding applications
Which technical specifications are available?
Throttle check valves are available in various sizes and performance ratings:
- G 1/4'' – up to 15 l/min at 350 bar
- G 3/4'' – up to 110 l/min at 250 bar
Additional sizes and pressure ratings are available depending on the manufacturer.
What is particularly important when selecting a throttle check valve?
The following criteria should be considered for selection:
- Suitable connection size and design
- Maximum operating pressure and flow rate
- Material compatibility with the medium used
- Required adjustment accuracy (fine thread vs. coarse setting)
How can the service life of these valves be extended?
The service life of throttle check valves can be increased by several measures:
- Regular maintenance and cleaning
- Use of corrosion-resistant materials
- Clean, contamination-free hydraulic or pneumatic media
- Use of suitable filters to prevent abrasion and particles