Suitable Hose Diameter in Hydraulic Systems and Its Importance
In hydraulic systems, the hose/pipe diameter plays a critical role in system performance and safety. Selecting the correct hose diameter ensures that the system operates efficiently and safely. In this week’s blog post, we will discuss how to select hydraulic hoses and their importance.
Criteria for Hose Diameter Selection
- Flow Rate: The hose diameter is directly related to the fluid flow rate in the system. For high flow rate requirements, larger diameter hoses should be used. This allows the fluid to flow freely and minimizes pressure loss.
- Pressure: The hose diameter determines the pressure resistance of the system. For high-pressure applications, thicker-walled and narrower diameter hoses should be used. This increases the hose’s resistance to pressure and reduces the risk of bursting.
- Hose Length: The length of the hose has a significant impact on pressure drop in the system. Longer hoses should have a larger diameter. This minimizes pressure drop and improves system efficiency.
- Flow Velocity: An important factor to consider when selecting hose diameter is flow velocity. Flow velocity determines the rate at which fluid passes through a hose, typically measured in meters per second (m/s). Higher flow velocities require larger diameter hoses. Smaller diameter hoses may restrict fluid flow at high flow rates, leading to pressure loss and overheating of the hose.
In addition to these factors, ambient temperature, material, and the application of the hydraulic system are also important for selecting the appropriate hose.
Advantages of Correct Hose Diameter
- Increased Performance: Selecting the correct hose diameter improves system efficiency. It allows the fluid to flow freely and reduces energy loss.
- Safety: Incorrect hose diameter selection can lead to safety risks. Proper diameter selection maintains the balance of pressure and flow in the system, enhancing safety.
- Longevity: The correct hose diameter extends the hose’s lifespan. It minimizes wear and tear caused by excessive pressure or flow rate.
At Hidros Group, we provide expert support in selecting the most suitable hose diameter for our customers. You can review our products on our website and contact us to determine the most appropriate hose diameter for your needs.
Determining Hose Diameter
When determining the hose diameter, there are three main factors to consider: flow rate, internal hose diameter, and flow velocity. Let’s look at how to calculate the correct hose diameter using the diagram we have provided:
Select Two Known Values: These values are usually flow rate and flow velocity.
Draw a Line Intersecting These Two Values: This line will give the third value on the diagram.
Read the Third Value from the Diagram: This value will be the internal diameter of the hose.
The fluid velocity should not exceed the range indicated on the right side of the diagram. At high velocities, turbulent flow can occur, leading to pressure losses and overheating. Lower velocities are preferable for long hoses and high-viscosity oils, while higher velocities can be used for short hoses and low-viscosity oils.
For a better understanding, consider the following example;
In a system with a flow rate of 100 liters per minute and a flow velocity of 4.5 m/s, to determine the internal diameter of the hose for the pressure line, we use the diagram to find the internal diameter to be 25 mm.
In this week’s post, we discussed the importance of hydraulic hoses, which can be considered the veins of hydraulic systems, and the criteria for their selection. If you have more questions about hydraulic systems or need further information, HIDROS GROUP is here for you. See you next time!
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