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Different types of directional valves
We supply non-return hydraulic check valves from stock. What you need, when you need it!
What is a check valve or non-return valve and for which hydraulic applications do you need one?
A check valve is the simplest type of directional control valve used in hydraulic systems. Check valves stop the flow of fluid in one direction and allow free flow in the opposite direction. They are also known as non-return valves. Check valves may be used as prefill valves, bypass valves, pre-tensioning or protection of hydraulic components against pressure surges.
Most check valves are spring-loaded and use a ball or plate to seal the flow in one direction. Check valves are designed with seats and thus are able to isolate circuits with no leakage. Balls, plates, poppets or poppets with soft seals are used as isolating elements.
There is a special type of check valve that prevents pistons or cylinder plungers from coming down and causing accidents. This is called a line rupture valve. When the line ruptures, the flow through the line rupture valve increases substantially, causing an increased pressure drop. This in turn creates a stronger force on the ball, which will close immediately.
Other special types of check valves are pilot-operated check valves and shuttle valves. A pilot-operated check valve allows flow in either direction by application of an external pilot pressure signal. A shuttle valve permits free flow at the highest operating pressure.
DTA supplies hydraulic valves from stock
We supply any hydraulic valve that you need when you need it!
Directional control valve types
How DTA Hydraulics can help with your
Order, technical support or advice for your hydraulic valve
A hydraulic system can only function - as per requirements - by using valves. Thus, you should always look for the correct type of hydraulic valve to serve your intended purpose. Get advice and suggestions from DTA in order to select the appropriate hydraulic valve, in terms of size and function, that suits your application and your budget.
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Pressure control valves
Proportional control valves
Flow control valves
How DTA can help save you time, effort and money on sourcing hydraulic valves appropriate for you.
DTA has extensive expertise with hydraulic valves and carries a substantial inventory of hydraulic valves in different sizes, valve spool configurations and solenoid voltages. We only supply high-quality hydraulic valves, considering a wide variety of functional and hydraulic system requirements. Contact a Sales Engineer now!
Industrial hydraulic valves according to International Standards available from stock when you need them!
Hydraulic valves are available from several major vendors; our preferred hydraulic valve suppliers are Parker Hannifin and Denison Hydraulics. Additionally, we supply hydraulic valve parts and accessories such as sub-plates, seal kits, O-rings, solenoids and hydraulic valve control electronics.