Multi-Outlet Dripper Assemblies
Netafim Multi-Outlet Dripper (MOD) Assemblies deliver superior uniformity and higher plant values.
Valuable Production Tools
With the growing demands of today’s high production scale operations, hand watering is no longer a viable option. An automated Netafim MOD watering system is the perfect solution.
Higher Crop Values
This results from having a highly uniform top quality crop – which is what to expect when water and fertilizer uniformity are improved. Netafim’s MODs feature both pressure compensation and a built-in check valve. This combination of features (referred to as PCNL) is the highest level of technology available in drippers today. It ensures that every plant will receive exactly the same amount of water and fertilizer regardless of where the plant is located within the system. Each dripper adjusts itself automatically to the system pressure and elevation so that even on rolling or sloped ground, the uniformity of watering is 94%. The built-in check valve prevents unwanted drainage of the system onto the lowest plants when the watering cycle is completed.
Water on foliage and flowers can spread disease rapidly. By applying water directly to the pot, the rest of the plant remains dry. Additionally, pesticides which are applied to the foliage are not washed off by daily watering. This can reduce the need for spraying – further lowering production costs – and decrease run-off contamination.
Flexible and Portable
The 4-Way Flat manifold separates for easy storage or transport in a box. Since the MOD is removable from the dripper supply tubing and bench, moving in the next crop on an empty bench is quick and easy. The dripper supply tubing (with the dripper attached) can be rolled up without tangling the spaghetti tubes. If a different plant spacing or a different flow per pot is desired, simply change or add a manifold.
Low Cost and Fast Payback
Payback for a complete system is usually within the first season of operation. The chart to the right shows just how quickly your Netafim MOD system will start paying you back.
Multi-Outlet Drippers Technical
Three Manifold Options
The Flat manifold is ideal for field applications. It’s low-profile design and durable construction resists damage from field workers. The 4-Way and 2-Way Flat Stackable manifolds can be combined with a 4-Way or 2-Way manifold to create additional configurations to meet your specifications.
4-Way Flat Stackable Manifold
When many small pots are to be watered, two manifold assemblies can be stacked together to create an 8-Way assembly. The nominal flow rate per pot is then .25 gallons per hour (GPH). For every 10 gallons per minute (GPM) available, 2,000 pots can be watered.
Angle Arrow Drippers
Two Angle Arrow Dripper options are available:
- The standard Angle Arrow Dripper is 6 3/8″ in length and is used for large pots.
- The Short Angle Arrow Dripper’s length is 3 3/4″ and is ideal for 4″ to 5″ pots.
Pressure Compensating Drippers
The WPCJL is pressure compensating to provide a constant flow from 10 to 45 psi and has a built-in check valve to prevent system drainage into the lowest plants.
- Flat 4-Way manifold is usually combined with the 2.0 GPH (nominal flow rate) WPCJL dripper to deliver .50 GPH (nominal flow rate) per plant.
- Flat 2-Way manifold is usually combined with the 1.0 GPH (nominal flow rate) WPCJL dripper to deliver .50 GPH (nominal flow rate) per plant.
Netafim’s UV White PE Tubing produces cooler water temperatures and enhances plant growth. Made from the highest quality plastics with excellent Ultra-Violet (UV) resistance, reflective white tubing is completely opaque to prevent algae growth. This tubing is not coated or layered white, it is solid white for long-term durability. Withstands heat, direct sun and harsh chemicals. UV White PE Tubing is recommended for the Supply Pipe and Super Flex UV White™ PE Tubing (5/3mm) connects the Angle Arrow Drippers to the Flat manifold.
Multi-Outlet Drippers Design Info
Using the top row of the 4-WAY MOD DRIPPER SUPPLY PIPE SIZING chart below, select the dripper spacing to be used. By matching this to the length of pipe column, the correct size Dripper Supply Pipe can be determined.
Use the ZONE FLOW CHART below to determine the Flow Demand for the system. Select from the chart the number of plants that will be watered at the same time. Use the resulting flow from this to determine the correct sizing for the pipe and control head components. Note that the 4-Way MOD has a flow of 0.50 GPH* per plant and the 8-Way MOD has a flow of 0.25 GPH* per plant. (* Nominal flow rate)
Size the Distributor and Mainline Pipes using the Maximum Flow Demand from the largest zone or combination of zones which may be watered at the same time. Either PVC, or polyethylene pipe can be used for the Distributor and Mainline. If PVC is used above ground, it should be painted to prevent light penetration, which can result in the growth of algae within the pipe. Note: Charts are appropriate for distributor lengths of up to 40 ft. and mainlines of up to 100 ft. When slopes are a factor, when longer length pipes are needed, or for other special conditions, please contact Netafim USA Customer Service for further assistance.
Size the Head Control (filter, pressure regulator, and valve) based on the Flow Demand determined in Step 2. It is very important to recognize the minimum flow for the pressure regulator. Be sure to size the pressure regulator by determining both the minimum, and the maximum number of plants which may be watered at the same time. The size of the Head Control components should be determined by the flow demand, and not the size of the pipe that connects to them. Mixed sized pipes and components (e.g. 1″ filter on 1 1/2″ pipe) will have no negative effect on the operation of the system if properly sized by the flow control.
For any additional questions regarding Selection for Netafim Multi-Outlet Dripper Systems, please contact Netafim USA Customer Service at 888-638-2346.
Multi-Outlet Drippers Ordering
For complete MOD assembly, order one Manifold Assembly and one Woodpecker Pressure Compensating Junior Dripper. All assemblies are standard with Super Flex UV White™ PE Tubing and are sold in Bundle quantities only.
NOTE: The flow per arrow dripper is equal to the dripper flow divided by the number of arrow drippers on that assembly. To ensure plants will receive equal water flow, use the same assemblies on each zone.