Here's a rundown of what we've done up to this point: - Assessed lawn's watering needs
- Measured dimensions of the lawn
- Created a scale drawing and plotted out the locations of the sprinkler heads
- Determined location of pipes
- Used vibratory plow to dig trench and pull all polyethylene pipe underground
- Installed first sprinkler head
In this episode, host Heidi Robinson and irrigation specialist Chuck Coddington continue the installation of s home irrigation system. This episode covers installing a backflow preventer, a master control valve box, a zone valve box and two more types of sprinkler heads: a 4" pop-up continuous sprayer and 12" microspray heads. Here are the materials and tools you'll need for today's project: Materials
Polyethylene pipe
Poly fittings
Couplers
Electronic valve
Poly zone line
Saddle-Ts
Rotor sprinkler heads
Microsprayer heads
Measuring wheel
Scale drawing of lawn
Teflon (c) tape Tools
Cordless drill
Pipe wrenches
Wire strippers
Propane torch
Phillips screwdriver
Poly-pipe cutter
Nut driver
Core tool
Crimping tool
Trenching shovel
Spade
Measuring wheel
Duct tape
Landscaping staples Installing the Backflow-Prevention Device The copper line has been connected to the water line going to the house. Now it's time to install a backflow preventer (figure A), a device that safeguards the water line from the nonpotable water in the irrigation system. Backflow preventers are recommended not only for irrigation systems but also for any hose bib; in fact, they're required in some areas. This installation is recommended for an experienced master plumber, and in fact, this is required by many local codes throughout the country. You can, however, do much of the work ahead of time. - Start by digging a hole around the water meter. A 2'-by-2' hole should be sufficient for most water mains.
- Carefully expose the water-main pipe and fittings, then call a professional to handle the installation.
- The backflow-prevention device is threaded onto the main line and is tightened securely with a pipe wrench (figure B).
- On the other end of the backflow preventer, the master control valve (figure C) is threaded on using Teflon (c) tape. First cut a small piece of 1" poly pipe about 12" long.
- Using a stainless-steel clamp, crimp the clamp tightly down onto the control valve.
- Slide clamps onto the main pipe and zone pipe.
- Slide a T-coupler (figure D) into the main and zone pipes and onto the control-valve pipe.
- Crimp all clamps down securely (figure E). Since this is a critical junction in the irrigation system, using two clamps per section is recommended.
RESOURCES :
Cottage Water Systems: An Out-Of-The City Guide to Pumps, Plumbing, Water Purification, and Privies
Model: 096969220X
Author: Max Burns
Cottage Life Books
Handbook of Water Use and Conservation: Homes, Landscapes, Industries, Businesses, Farms
Model: 1931579075
Author: Amy Vickers
(2001)
To order this title from Amazon.com, click here.
WaterPlow Press
Website: www.waterplowpress.com
GUESTS :
Chuck Coddington
Coddington Enterprise
6376 Fairview Road
Hixon, TN 37343
Phone: 423-847-9964
Home Irrigation Specialist
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