Hydraulic Valves: Precise Control for Your System

Valves: The Brains of the Hydraulic System

While the hydraulic pump is the "heart" of the system, the valves are undoubtedly its "brains." These precision mechanical components are responsible for controlling the entire system. Without them, hydraulic energy would be just raw, uncontrollable power. Valves determine where the working fluid (oil) flows, what its pressure is, and how fast it moves. At Hidraulika Store, our "Valves" category offers a comprehensive selection of over a thousand items, from the simplest check valve to complex proportional control components, ensuring your hydraulic system does exactly what you want it to.

Directional Control Valves: The Directors

Directional control valves represent our most sought-after category. Their main function is to open, close, and change the direction of flow in hydraulic circuits. Simply put, they decide which chamber of a cylinder receives pressure, thus starting, stopping, or reversing its movement.

• Subplate-mounted (CETOP) valves: These are industry-standard valves mounted on subplates. This modular design makes maintenance and replacement extremely simple.

• In-line valves: These valves are connected directly into the hydraulic pipeline.

Their control can be manual (lever), mechanical, hydraulic, or the most common, electric. For electric control, solenoid coils and electrical connectors are essential, which you can also find in our "Accessories" category. Explore our selection of hundreds of directional control valves for perfect control!

Pressure Valves: The Regulators of Force

Pressure valves are responsible for the force generated in the system and for its safety. Without them, the system would be unstable, and components could be severely damaged.

• Pressure relief valves: The most important safety component. They protect the pump and other system elements from overpressure by releasing excess oil to the tank once a set pressure is reached.

• Pressure reducing valves: Needed when one part of the system requires a stable, lower pressure than the main system pressure.

• Brake valves and Overcenter valves: These valves are responsible for the controlled, safe lowering of loads (e.g., a crane boom), preventing the load from "running away."

• Proportional pressure reducing valves: Allow for precise, stepless control of pressure based on an electrical signal.

Flow Control Valves: The Masters of Speed

Flow control valves adjust the speed of hydraulic movements by regulating the amount of oil flowing through a specific circuit.

• Throttle valves and Throttle-check valves: Provide simple speed adjustment, typically used for fine-tuning cylinders.

• Flow divider/combiners: Capable of synchronizing two hydraulic circuits, for example, to move two cylinders in unison, regardless of their load.

• Flow regulators: These valves maintain a constant flow rate regardless of input pressure fluctuations, ideal for maintaining a fixed speed on a hydraulic motor.

Logic and Modular Valves: The Smart Solutions

• Check valves: The simplest logic elements, allowing oil to flow in only one direction and blocking it in the reverse. Pilot-operated check valves, in contrast, can be opened by an external pilot pressure, allowing a load to be held in place. The most popular type is the double pilot-operated check valve, which can lock a cylinder in both directions without leakage. Our exceptionally popular in-line model, the Double Pilot-Operated Check Valve - In-line - 1/4", reliably holds loads in any position.

• Cartridge valves: The building blocks of modern hydraulics. These valves are installed into custom-designed blocks (manifolds) in a cavity. Their advantages include extremely compact size, high flow capacity, and leak-free, poppet-style sealing.

Why Choose Valves from Hidraulika Store?

With over 1,000 different valves and hundreds of accessories (like solenoid coils, seal kits, and subplates) in stock, Hidraulika Store is not just an online shop but an expert center. Our colleagues have deep technical knowledge and will help you select the right valve, whether it's for a simple replacement or designing a complex control task. Discover our full range of services and products on the hidraulikastore.com homepage!

Frequently Asked Questions

• What's the difference between a pressure relief valve and a pressure reducing valve? A pressure relief valve protects the maximum system pressure and is normally closed. When the pressure reaches the set value, it opens and diverts the excess flow to the tank. A pressure reducing valve creates a stable, lower-pressure branch in the system and is normally open.

• What is a CETOP valve? CETOP is a European standard (now also an ISO standard) that defines the mounting pattern and dimensions for subplate-mounted valves. This ensures interchangeability between different manufacturers' valves. For example, CETOP 3 (NG6) or CETOP 5 (NG10) are the most common sizes.

• How do I choose the right solenoid coil for my directional valve? To select a coil, you need three main parameters: the voltage (e.g., 12V DC, 24V DC, 230V AC), the inner diameter that fits the valve stem (e.g., 19 mm or 22 mm), and the connector type (e.g., DIN connector).