Installation of 3-inch (75 mm) Flexible Tubing in Drip and Subsurface (Tip Line) Irrigation Systems
Introduction: The Importance of Selecting the Right Pipe in Modern Irrigation
In modern agriculture, the efficient use of water resources is a primary challenge that is ensured by proper irrigation system management. The use of lightweight and flexible pipes such as 3-inch coiled pipe (equivalent to 75 mm) in main and sub-main lines has reduced transportation and installation costs. Due to their polyethylene structure and appropriate wall thickness, these pipes offer good pressure stability and are ideal for large-scale farms and varying terrain conditions. In this article, we examine the step-by-step installation process of 75 mm coiled pipe in drip and micro-sprinkler systems, enabling you to establish your farm’s irrigation infrastructure with confidence.
Pre-Installation Identification and Preparation
Before laying the first meter of pipe, you must ensure that the primary infrastructure is ready. Installing high-pressure pipes such as 3-inch lines requires precise calculations of pressure and flow rate. If the input pressure to the farm is below the desired threshold, 75 mm pipe may perform better than smaller sizes (such as 50 or 60 mm) because it experiences less pressure drop. Conversely, if your farm has a very steep slope, the use of coiled pipe should be handled with greater caution to prevent pressure accumulation at lower points.
Soil Texture and Surface Condition Assessment
The first step is precise field identification. Collapsible tubing easily navigates minor terrain irregularities due to its flexibility, but excessive wear on rough surfaces can reduce its service life. It is recommended to grade the general path with a grader or light tractor before pulling the tubing. Additionally, soil permeability assessment is critical; unlike drip systems, strip systems are more sensitive to water infiltration rates. To better understand the importance of land preparation for polyethylene tubing, you can read the Importance of Field Inspection for Strip and Polyethylene Tubing article.
Technical Calculations and Proper Sizing
The fastest way to ensure proper performance of 3-inch collapsible tubing is to calculate the pressure drop. In drip systems, the 75 mm main line typically handles water transport from the tank or pump to laterals. If your system’s total flow rate exceeds 40-50 liters per second, a 75 mm diameter is an optimal choice. If the flow is lower, pressure drop increases; if higher, the flow velocity reaches a level where internal pipe wear increases.
Impact of Slope on System Performance
In fields with reverse slope, water application at the end of the 75 mm tubing faces instability issues. To compensate for this, it is essential to use pressure-regulating valves at the inlet of the main line. Furthermore, for vegetable farms, precise calculation of irrigation frequency is critical to prevent excessive moisture accumulation in areas where the main line passes. You can use the guide for optimizing vegetable planting alongside main irrigation lines. Vegetable Yield per Hectare: A Practical Guide Review this.
Execution Steps for Installing 75 mm Flexible Pipes
Once calculations are complete, proceed to the operational execution. Flexible pipes are supplied in rolls, and their installation is significantly faster than rigid pipes. However, speed should not lead to neglecting details. Every joint or connection in the irrigation system is a potential point of failure.
- Verify Exact Length: Measure the route before cutting the pipe. Allow for one extra meter to avoid the need for re-cutting in case of errors.
- Drilling the Pipe: Use a pipe bender or hole punch to create appropriate holes in the pipe. The holes must be sized to fit detachable emitters or coupling pieces. Always flush out dust and debris inside the pipe with a low water flow after drilling.
- Installing connected components: Secure the detachable drippers by hand and ensure there are no cracks in the plastic around the holes. Using sealant and special adhesive (if necessary) is recommended for increased durability.
- Pulling the pipe in the field: The 75 mm pipe is somewhat heavy due to its weight. It is best to use two people to pull it to prevent sagging and shear stress on the drippers.
- Connecting to the main source: Use main shut-off valves. Installing a shut-off valve at the inlet of the 75 mm main pipe facilitates easier troubleshooting.
Key points at the connection site
Metallic or plastic connectors must be completely smooth and free of sharp angles. In drip line systems using narrower lines, a 3-inch pipe often serves as the feeder pipe. If using a drip line, ensure that the band width matches the spacing between the drippers on the 75 mm feeder line. To better understand the overall system structure and how components combine, studying the comprehensive greenhouse irrigation guide can be beneficial, as it shares common principles regarding flow distribution in different lines.
Optimization and post-installation management
Installation is only half the battle; the other half is proper system management. 3-inch flexible hose is sensitive to solar radiation. If the hose remains on the ground surface, leaks and water accumulation in confined areas must be prevented to avoid creating a favorable environment for weed growth near the main line. Additionally, irrigation scheduling must be adjusted based on plant moisture requirements.
Relation to crop water requirements
To achieve maximum efficiency, you must determine how much water and when to input into the system. Calculating water requirements based on crop leaf area is sometimes overlooked. For example, in cereal crops, moisture management in the late stages directly affects quality. You can use the tables available in the article for more accurate calculation of required water volume in cereal farms Cumulative amount in one hectare as one of the cereal crop examples. Also, for dry goods with high economic value, knowing a dried poultry crop per hectare It can serve as a good criterion for adjusting the output flow rate of control valves to ensure precise water delivery without waste.
Frequently Asked Questions (FAQ)
Is a 75 mm collapsible hose suitable for small farms?
For very small farms (less than half an hectare), a 75 mm hose may be costly and compensate for minor pressure drops. In this case, 40 or 50 mm hoses are usually a better choice. However, if you have a high-pressure pump and want high flexibility for changing plant layouts, using 75 mm in main lines is acceptable even on small farms.
How can we prevent clogging of the dripper holes in the main pipe?
Clogging is usually caused by uneven sediment or the entry of suspended particles. Installing an appropriate filter before water enters the 3-inch collapsible hose is the key solution. Use screen filters with 80–100 mesh and inspect and clean them every few weeks. Additionally, backflushing the system at the end of the night helps clear sediment.
What is the useful lifespan of polyethylene collapsible pipes?
Depending on the UV (ultraviolet) resistance quality of the pipe, the lifespan in open conditions with direct sunlight is between 2 and 5 years. If the pipe is installed underground or under plastic covering, this duration increases to 10 years or more.
Final Conclusion
Proper installation of 3-inch (75 mm) flexible pipe is the foundation of a successful drip irrigation system. From calculating flow rate and pressure drop to execution details such as connector type and pipe pulling direction, every element affects system integrity. By considering the practical points mentioned in this article, you can ensure the stability and uniform performance of your tape or drip systems. Do not forget that continuous monitoring of filters and shut-off valves is as important as the pipe installation itself. Precision agriculture requires precision in every segment of the pipe; therefore, make the most rational choices in size and type of connections to optimize your irrigation investment.