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Monoblock valves
Discover high-quality monoblock valves from Hydromot – robust manual control valves for mobile and industrial hydraulic systems. The compact monoblock
design integrates up to six sections in a solid cast body, ensuring durability, tightness, and easy installation. Learn more...
design integrates up to six sections in a solid cast body, ensuring durability, tightness, and easy installation. Learn more...
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Our valves precisely and safely control hydraulic oil flow, supported by integrated pressure relief and check valves. The range includes series MB-2, MB-3, MB-4, and MB-5, with flow rates of 45, 60, and 80 L/min and an operating pressure of up to 315 bar. Whether for tractors, wheel loaders, excavators, or industrial applications – Hydromot monoblock valves stand for reliability, efficiency, and top quality.
Monoblock Directional Control Valves – Frequently Asked Questions (FAQ)
What are monoblock directional control valves?
Monoblock directional control valves are compact and robust valves used for the manual control of hydraulic functions. They combine several control functions within a single solid cast housing.
How do these valves work and how are they constructed?
These valves control the flow direction and the flow rate of hydraulic oil to hydraulic consumers such as cylinders or hydraulic motors, typically via manual levers. They consist of a single cast block with integrated valve bores housing the spools, springs, and seals.
Which materials are monoblock valves typically made of?
Valve bodies are commonly made of high-grade cast iron or steel, and in some cases aluminium. Valve spools are usually manufactured from hardened steel. Seals are made of wear-resistant plastic, elastomers, or NBR (nitrile-butadiene rubber), depending on the application.
How many functions can monoblock valves control?
Monoblock valves are typically designed for 1 to 6 sections. Each section controls a specific function, such as lifting, lowering, tilting or swinging.
What are the typical technical parameters (pressure and flow) of monoblock valves?
Flow rates typically range from 40 to 80 l/min, which is standard for agricultural and construction machinery. Variants from 20 l/min up to more than 100 l/min are also available. Operating pressures generally lie between 180 and 350 bar, with some models reaching maximum working pressures of 315 bar.
Where are monoblock directional control valves primarily used?
Monoblock valves are widely used in mobile and industrial hydraulic systems. Typical applications include agricultural machinery (e.g., tractors, front loaders), wheel loaders, excavators, log splitters, and tippers. They are used wherever simple, robust, and reliable manual hydraulic control is required.
What are the main advantages of the monoblock design?
The monoblock design offers several key advantages:
- Compact and space-saving construction
- High robustness and durability due to the solid one-piece housing
- Cost-effective compared to modular or electro-hydraulic valve systems
- All ports and functions are integrated in a single block, simplifying installation
Which maintenance measures are required to ensure long service life?
Regular inspection and lubrication of all moving parts (levers, spindles, bearings) are essential. Seals and valve seats should be checked at least once a year and replaced if necessary.
For heavy-duty applications, monthly inspections are recommended; otherwise every 3 to 6 months.