What is a hydraulic monoblock valve?

Most hydraulic systems require a directional control valve of some sort. Knowing which valve style is right for your system can prove difficult with so many to choose from. Having an understanding of what features your hydraulic system needs and how it will be controlled is the first step to making a decision. 

The Benefits Of Monoblock Control Valves

Monoblock directional control valves offer benefits that suit some systems compared to other valve forms, these can include high efficiency / low pressure drops, compact size and lightweight. The all-in-one casting design also provides fewer potential leak points compared to hydraulic sectional valves which can prove to be a big benefit. In addition, monoblock directional control valves offer various operational methods, such as manual lever control, pneumatic control, hydraulic and electro-hydraulic control, on/off and proportional.

Monoblock valves are usually cheaper, lighter in weight and compact compared to sectional valves, which can be beneficial for some hydraulic systems. 

Other differences between Monoblock and Sectional Valves?

The main difference between a sectional valve and a monoblock is their versatile modular design, sectional valves allow the assembler to add or remove working sections with relative ease, whereas a monoblock valve needs to be completely changed should an increase or reduction in sections be required. The ability to store individual sections and build an assortment of different valve setups reduces stock holding and improves machine builders’ versatility.

Sectional control valves tend to be built to cover a broader range of higher pressures and flows that a monoblock valve cannot handle. However, with each additional section added to the sectional valve the potential of leakages increases. There are many different serviceable parts and, when being serviced, if the tie rods, that hold the valve together, are not torqued correctly the valve can leak and the spools can bind preventing them to shift.

A monoblock directional valve essentially offers the same function as a sectional valve but is formed from a single casting. This reduces its configurations but offers the advantages of a more compact, lightweight and leak-proof product.

Hydraulic Monoblock Valve Applications

For applications that require compact dimensions and simple construction with a focus on minimising weight, size and cost, monoblock valves are a good option. Such applications can include farm machinery, municipal service vehicles, construction equipment and lifting products.

You will need to understand your hydraulic system’s criteria – that is, the pressure, flow, number of sections, variety of sections, actuation method and size constraints. If you are in any doubt, then please contact our knowledgeable team at Hydrastore 01427 874445, who are on hand to talk through your configuration and help apply the most appropriate product for the application.

Hydrastore’s Monoblock Directional Control Valves

Hydrastore is proud to stock Galtech’s and Hydrocontrol’s range of monoblock valves. These monoblock valves are manufactured to very high standards from a manufacturer with a reputation for reliability and exceptional build quality.