Flow up to 90L/min
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6/2 Hydraulic Solenoid Valves (24V, 90 l/min) – Industrial High-Flow Dividers
6/2 hydraulic solenoid valves with a nominal flow rate of up to 90 l/min and a 24V DC coil voltage are advanced components designed for use in power hydraulic systems with a high demand for fluid flow. As six-way, two-position devices, they perform the task of sequential or alternating redirection of the oil flow from one section of the main control valve to two independent actuators. The use of an electric signal allows for full automation and remote management of the component's operation from the operator's cabin or machine controller. This design eliminates the need for physical expansion of the system with additional mechanical control valve sections, thereby reducing the total weight of the installation, pressure drops, and the risk of leaks at fixed connections. The 24V power supply standard predisposes this product group for heavy-duty industrial, transport, and construction applications.
Application and Technical Characteristics
High-flow 6/2 solenoid valves with a capacity of up to 90 l/min have been designed taking into account rigorous fatigue strength criteria. The monoblock body cast from ductile iron with a compact molecular structure guarantees the stability of internal geometry at working pressures reaching up to 315 bar. The control spool undergoes precision finishing – grinding and honing – which allows for minimal clearance tolerance of the spool in the body and reduces internal edge leakage to levels permitted by laboratory standards.
The devices exhibit total chemical neutrality and full compatibility with mineral hydraulic oils (HL, HLP, HVLP classes) in accordance with ISO 6743/4 standards. To ensure stable kinematic viscosity of the medium and protection of the lubricating layer inside the valve, it is recommended to use only certified, high-quality hydraulic oil with the appropriate cleanliness class. The internal architecture and the used polyurethane and fluoroelastomer seals allow for trouble-free operation in a wide range of ambient and working medium temperatures (from -25°C to +80°C). Electromagnetic coils powered by 24V DC are equipped with standardized plug-in connectors according to ISO 4400, providing an IP65 degree of protection against dust ingress and direct water jets.
Key implementation areas for 6/2 24V 90 l/min solenoid valves:
- Heavy construction machinery: Power systems for working attachments with high oil demand, including demolition grapples, large rotators, or drill rigs in crawler excavators.
- Trucks and lifting equipment: Switching hydraulic power between the truck crane's (HDS) main circuit and the hydraulic stabilization outrigger systems. To monitor stability and pressure spikes at these critical circuit points, mounted in the valve block are precision pressure gauges and test kits.
- Municipal systems: Control of multifunctional airport and highway snowplows requiring rapid and simultaneous adjustment of several blade geometry parameters.
Why choose our components? Technical Benefit
6/2 solenoid valves with a flow of up to 90 l/min available in our assortment meet quality standards and the mechanical safety requirements of the European Union. Connection ports (standardly BSP 1/2" or BSP 3/4" internal threads) are cut with strict accuracy according to ISO 228/1 specifications, preventing body deformation during the application of high tightening torques. For safe and trouble-free discharge of such a large fluid flow from the valve to the actuators, appropriately sized, durable power hydraulic hosesare necessary, which effectively dampen pressure pulsations occurring at the moment of rapid coil switching. The 24V coils themselves are characterized by optimal current-magnetic efficiency and are adapted for continuous operation (ED 100% duty cycle). An additional engineering benefit is the integrated manual emergency control button, allowing for mechanical forcing of the spool movement during service procedures.
Technical Specification of the 6/2 24V 90L Solenoid Valve
| Design Parameter | Nominal Value / Range | Requirement / Standard |
|---|---|---|
| Control element design | Spool valve, 6-way, 2-position | ISO 1219-1 |
| Maximum nominal capacity | 90 l/min | ISO 4411 |
| Maximum working pressure (ports P, A, B) | 315 bar | ISO 2941 |
| Nominal supply voltage | 24V DC (direct current) | - |
| Allowable voltage deviation | ±10% of nominal value | - |
| Nominal electromagnet duty cycle | ED 100% (continuous load) | VDE 0580 |
| Electrical connector protection degree | IP65 (with dedicated connector) | EN 60529 |
| Recommended fluid viscosity range | 15 cSt to 75 cSt (allowable: 10 - 400 cSt) | ISO 3448 |
| Required medium cleanliness class | Min. 19/15/12 or higher | ISO 4406 |
| Main connection threads | Internal BSP 1/2" or BSP 3/4" | ISO 228/1 |
Frequently Asked Questions (FAQ)
1. What are the risks of using a valve with a flow of 90 l/min in a system where the pump generates a higher output? Exceeding the nominal capacity threshold of 90 l/min induces a rapid increase in hydraulic resistance, which directly generates high energy losses in the form of pressure dro
2. Is external drainage of the 6/2 valve always required at a flow of 90 l/min? External drainage (discharging leakage from the spool chamber directly to the tank) becomes technically necessary if the pressure in the return lines (so-called back pressure) exceeds the allowable threshold specified by the manufacturer (usually above 25 bar for internal drainage). At a flow rate of 90 l/min, return resistances in the installation are sometimes so high that failure to connect a dedicated external drainage line will cause the spool to hydraulically lock in an intermediate position or lead to permanent leakage of the coil housing.
3. How important is 24V voltage stability for the correct operation of a high-flow 6/2 valve? Supply voltage stability is of primary engineering importance. The strength of the coil's magnetic field, necessary to overcome the resistance of the internal return spring and the push of the oil flow at 90 l/min, is directly proportional to the value of the supplied current. A voltage drop in the machine's installation below 20V DC will weaken the electromagnet, which at high pressure and flow will lead to incomplete opening of the working channels, flow throttling, and improper operation of the connected actuators.
4. How to correctly install a 6/2 90 l/min valve in a system with a master control valve? The 6/2 solenoid valve is installed as an actuator behind a selected section of the main control valve. The two supply (input) ports of the 6/2 divider are connected directly to the working outputs of the primary section of the main control valve, which is manually or cable-controlled. The remaining four output ports are led in pairs to two target working devices. Electrical control of the 24V coil allows the operator to determine which of the two actuators the oil flow will go to at the moment of activating the main lever.