STEP 1
VISUALIZE THE GREENHOUSE
Evaluate the location of obstacles such as curtains or hanging baskets. Consider aisles and whether they can be wetted. Review cultural practices which might impact the height at which the misters should be placed.
Step 2
SELECT THE MISTER HEAD
Choose the VibroNet Mister and Check Valve Head Assembly for your application. Mister solutions are based on an average working pressure of 30 psi. Check Valve with purple pin opens at 28 psi.
Step 3
SELECT THE MISTER BASE
Netafim offers a selection of three bases to connect the mister to the supply line.
- ½” Adapter – used for connection to rigid pipe
- Retrofit Adapter – connects Netafim misters to other manufacturer’s fittings
- Hanging Mister Assembly – choose length based on your application (see available options under the Ordering Tab). An extension tubing piece for creating longer lengths is optional. The Hanging Assembly connects to the Polyethylene (PE) Tubing Supply Line and the VibroNet Mister Head and Check Valve.
Step 4
SIZE THE SUPPLY PIPE
Use the Poly Pipe Sizing chart to select the correct supply pipe size. Low density polyethylene is strongly recommended.
Step 5
SIZE THE DISTRIBUTOR AND MAINLINE
The remaining piping and system components are sized based upon the maximum flow they will receive. Use the Flow Per Mister Line chart to determine the flow of a single mister supply pipe for the length of run in your design. If more than one mister line will be operated at once, be sure to multiply the flow by the number of lines when sizing the system pipes and components. Pipe size recommendations are guidelines only. For distributor lines over 40 ft., mainlines over 100 ft. or when slopes are a factor, please consult a design professional.
Step 6
SIZE THE CONTROL HEAD COMPONENTS
The components should be sized according to the flow range shown in the Filter, Valve and Pressure Regulator Sizing chart. The pipe connecting to the components can be of a different size.
Step 7
STARTING UP A SYSTEM FOR THE FIRST TIME
The most important point to remember when starting up a new system is to flush the mainlines. Debris from construction can otherwise be washed into the misters, resulting in plugging or improper operation. To properly flush a system, first connect all the pipes and hanging assemblies, except the Misters with the Check Valves. Next, open the ends of the distributor line and the mister supply pipes. Close them off, one by one, starting with the opening closest to the head control, and proceeding to the most distant opening. Only after complete flushing should the Misters with Check Valves be attached to the hanging assemblies.