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Heart Valve Of Irrigation: Distribution unit

What is a Distribution Unit?

Water distribution in an irrigation system is a dynamic process integral to delivering water effectively from the source to designated zones within the landscape. The distribution units carry out this intricate procedure. It involves the utilization of pipes, fittings, and an array of components meticulously orchestrated That ensures a uniform and efficient water dispersal.

At the crux of the operation lies the main water source or supply line, intricately connected to the irrigation system. Subsequently, a network of pipes navigates this water, traversing the landscape and servicing different zones or sections.

The placement of these pipes is diverse, ranging from underground concealment to integration within the vegetation or discreet alignment along structures. This variation hinges on the tailored design and specific requirements dictated by the irrigation system.

Integral to regulating the water flow to distinct zones are control valves, commonly known as solenoids. These valves, housed within accessible valve boxes, serve as pivotal components that dynamically open and close. Their purpose is to modulate the water flow to specific zones, affording a customized approach to watering schedules. This level of control ensures that each designated area receives a precisely calibrated amount of water. That is promoting both efficiency and conservation.

Furthermore, the meticulous placement of these components and the strategic use of fittings contribute to a system that not only delivers water but does so with an emphasis on even distribution and conservation. This process ensures that the landscape thrives while adhering to resource-conscious principles.

Valve Box

Typically, when it comes to the installation of distribution units, they are commonly placed inside valve boxes. However, there are instances where they can be fitted on top of the tank or mounted on walls. Also they can be placed on fences or other suitable structures based on specific circumstances.

The number of valve box units present in a garden may vary depending on the layout and the location of the irrigated zones. In general, these units are strategically positioned in the common area surrounding the zones. In general, the common area surrounding the zones strategically positions these units.

They may be closer to the water source, which is a logical choice. Valve boxes are designed to be buried in the soil, with their lids at ground level.


Effective maintenance of distribution units, such as solenoids connected with manifold fittings, is imperative for ensuring the optimal performance and longevity of irrigation systems. Regularly inspecting and keeping the valve boxes clean is a fundamental aspect of this upkeep.

Valve boxes serve as protective enclosures for critical components like solenoids and manifold fittings. Keeping these boxes clean involves removing any debris, dirt, or vegetation that may accumulate around the valves and fittings. This proactive measure prevents potential obstructions and ensures unimpeded functionality.

Due to the fact that valve boxes contain serviceable components, it is crucial to ensure easy access to them. Consequently, it is not advisable to plant vegetation directly around a valve box, as it may hinder accessibility and potentially impede maintenance and repairs.

Routine inspection of solenoids is crucial to identify any signs of wear, damage, or malfunction. Check for leaks, corrosion, or electrical issues that might compromise the solenoid’s performance. Timely replacement of worn-out components helps maintain the integrity of the distribution unit.

Inspect manifold fittings for leaks or blockages, as they are responsible for directing water to different zones. Ensuring that these fittings are securely connected and free from any impediments guarantees even water distribution throughout the irrigation system.

Regular cleaning and maintenance of distribution units contribute to efficient water flow, preventing disruptions and potential damage. This proactive approach not only safeguards the longevity of the system but also promotes water conservation and optimal plant health. Embrace a routine maintenance regimen to uphold the reliability and effectiveness of your irrigation system’s distribution units, ensuring a thriving and well-nourished landscape.

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We, at The Gardener’s Rain prefer to use solenoids from the market leader Hunter Industries due to their long lasting reliability.

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