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Greenhouse Drip Irrigation System Installation

Release Date:

2019-08-29

When implementing drip irrigation inside greenhouses, each greenhouse is typically equipped with outlet ports. Filtration and fertilization units can be connected directly to these outlets. The following section provides a detailed description of how pipe fittings and equipment are connected. Based on the greenhouse’s area, divide the irrigation zones into appropriately sized rotational irrigation groups. Select a main pipeline material with a pipe diameter that is both economically efficient and capable of meeting the required irrigation water demand. Begin by installing the headworks of the entire drip irrigation system. Starting from the outlet end of the PE supply pipe, first connect a PE male-threaded compression fitting to a corresponding model of PVC female-threaded ball valve. Since both the PVC female-threaded ball valve and the Venturi fertilizer injector are female-threaded fittings, a metal connector can be used.

When implementing drip irrigation inside greenhouses, each greenhouse is typically equipped with outlet ports. Filtration and fertigation systems can be connected directly to these outlets. The following section provides a detailed description of the connections for piping and associated equipment.
Based on the greenhouse area, reasonably delineate irrigation rotation groups. Select a pipe material for the main pipeline that offers a pipe diameter that is both economically viable and capable of meeting the required irrigation water demand.
First, install the head assembly of the complete drip irrigation system. Starting from the outlet end of the PE pipe, connect a PE male-threaded straight connector to a PVC female-threaded ball valve of the corresponding model. Since both the PVC female-threaded ball valve and the Venturi fertilizer injector are female-threaded fittings, they can be joined using a steel coupling with matching threads. To ensure a tight seal, wrap an appropriate amount of Teflon tape around the threaded connection. On the other side, tightly screw the mesh filter (or disc filter)—which is a male-threaded fitting—onto the Venturi fertilizer injector. Finally, secure the male-threaded mesh (or disc) filter to the PE pipe using a PE female-threaded locknut straight connector. With this, the complete head assembly has been fully installed.
After the water-delivery pipeline is connected at the headworks, it is routed according to the irrigation zoning. Within greenhouse structures, PE pipe (or PVC pipe) may be used for the main delivery line; typically, no trenching is required inside the greenhouse, and the pipe is laid directly on the ground. Branch lines generally use PE pipe or flexible tubing, which facilitates perforation for connection to drip irrigation tape or tubing.
Finally, the end-of-line irrigation emitters are installed; commonly used options include drip tape or drip tubing. For greenhouses that use PE pipe as the lateral main and drip tape for drip irrigation, first use a hole-punching tool of the appropriate size (Φ16) to make holes in the PE pipe, then install a pull-ring bypass fitting or a female (or male) bypass fitting, and finally connect the drip tape to the bypass fitting. Alternatively, fittings with built-in valves can be used, which offer more convenient control during operation. The end of the drip tape can be sealed with a pull-ring end cap, or it can simply be cut off. Drip irrigation tape Fold the end of the drip irrigation tape several times and then tuck it into the cut section of the tape for a more convenient connection.
Strawberry drip irrigation

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