Flow up to 30L/min
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Lever-operated hydraulic control valves – flow up to 30 l/min
Monoblock control valves with a nominal flow rate of 30 l/min are compact control units designed for power hydraulic systems with lower performance requirements. Their main task is to precisely direct the flow of the working medium between the hydraulic pump and the actuators, such as single-acting or double-acting cylinders. The manual lever control system provides direct control over the machine's operation, ensuring the operator gets an immediate system response to any movement made.
Application and technical parameters
Units with a flow rate of 30 l/min are used in small agricultural machines, home construction equipment, and specialized workshop systems. The body, made of ductile iron, ensures resistance to operating pressure up to 250 bar in supply (P) and receiving (A, B) ports. The device works with HLP and HVLP hydraulic oils (according to DIN 51524 standards), operating stably in a wide temperature range from -20°C to +80°C. To maintain a long service life of the spools, it is necessary to take care of the cleanliness of the medium by using high-quality hydraulic filters. System tightness during high-pressure operation is ensured by professional bonded seals, which are a key assembly element when connecting with hydraulic fittings.
Why choose our components?
The precision fit of the spools in our 30 l/min control valves minimizes internal leakage, allowing the actuator to maintain a stable position when the lever is locked. The compact monoblock design facilitates installation in machines with limited space in the operator's cabin. Each block is equipped with an integrated relief valve that protects the system against uncontrolled pressure increases. If maintenance work is required, we offer access to a full range of hydraulic control valve parts, which significantly facilitates keeping the device in full working order for a long time.
Technical specification
| Parameter | Value |
|---|---|
| Nominal flow rate | 30 l/min |
| Maximum pressure (P, A, B) | 250 bar |
| Operating temperature | -20°C to +80°C |
| Body material | Ductile iron |
FAQ – service and operation
1. Can a 30 l/min control valve be used for double-acting cylinders? Yes, the standard control valve section is adapted for controlling double-acting cylinders (spool type "A").
2. How often should lever seals be replaced? This frequency depends on operating conditions and the oil cleanliness class. If leakage is observed under the lever covers, we recommend checking the condition of the spool pins and potentially submitting the device for professional verification at our service center.
3. Why does the oil in a 30 l/min system overheat excessively? The most common cause is an oil tank volume that is too small relative to the pump capacity or excessive throttling of the medium on the return. It is worth checking the return filter's permeability.