Multi-Outlet Dripper Assembly Selection & Sizing

STEP 2
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.

STEP 3
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.

STEP 4
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.