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WATER STEWARDS January 31,2012. DO IT YOURSELF DRIP IRRIGATION SYSTEMS. WHY CONSIDER?. No great skill needed to install No trenching required No electrical connections necessary No precise pipe connections to make Inexpensive to install. DRIP IRRIGATION ADVANTAGES. - PowerPoint PPT Presentation
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WATER STEWARDSJanuary 31,2012
DO IT YOURSELF DRIP IRRIGATION
SYSTEMS
WHY CONSIDER?No great skill needed to install
No trenching required
No electrical connections necessary
No precise pipe connections to make
Inexpensive to install
DRIP IRRIGATION ADVANTAGESReduces loss
through evaporation
Eliminates runoffDoes not spray
leaves, petals, trunks thus reducing fungus potential
Does not waste water irrigating surrounding areas (discourages weeds)
ADVANTAGES
Reduces overall time to water a given area
Ensures consistent moisture to individual plants
Works especially well on difficult hillsides
Can be used for small irrigation additions
MINOR PROBLEMSOccasional minor adjustments do to:
Dogs chewingChildren kickingSpider web clogging
PLANNINGPlanning is essential
Draw a design to include all your plantings under consideration
Determine the size and requirement of each circuit/zone
About 200’ max per circuitMatches your needs to your purchases
PLANNINGThink “HYDROZONES”
Think drip and/or spray systemsSprayer systems for closely spaced systems
Drip systems for widely spaced plantings
Regardless, the system selected should cover 50% of the root zone
Think about the soil type in your garden area
TOOLS & OTHER BASIC MATERIALS NEEDEDTools…cutters and punchMaterials :
Garden hose?Staking device
OPTIONAL UPGRADESFilterTiming deviceFertilizer injector …needs anti-siphon valveAll sorts of interesting toys
TUBING & FITTINGS½” main tubing2 wall thicknesses .052 and .060 match fittings to wall
thickness 3/8” main tubing
TUBING AND FITTINGSFITTINGS (i.e. connectors)Used to connect pieces of
tubingFittings are color coded:
Red fittings for 3/8” tubingBlue and green for 1/2” tubing
Three insert typesCompression Barbed locking
EMITTERS & SPRAYERSEmitters let the water drip onto the
plant rootsGenerally come in three sizes
½ gallon per hour1 gallon per hour2 gallons per hour
Have barbed ends to fit into micro tubing
Color coded…color end into tubingAlso sprayers in ¼, 1/2, ¾ and full
turn
Also available as a pre-constructed line with emitters attached
SOME ADDITIONAL ITEMSPunches
Goof Plugs
Stakes
Output rate Number of emitters Placement
Vegetables -close spacing
½-1 GHP 1 Every 12”
Vegetables -widely spaced 1-2 GPH 1 At base of plant
Flower Beds 1 GPH 1 At base of plant
Ground Covers 1 GPH 1 At base of each plant
Shrubs2-3 ft tall
1 GPH 1-2 At plant base
Shrubs and Trees3-5 ft tall
1 GPH 2 12” opposite sides
Shrubs and Trees5-10ft tall
2 GPH 2-3 2 feet from trunk
Shrubs and Trees10-20 ft tall
2 GPH 3-4 3 feet apart at drip line
Trees Over 20 ft tall
2 GPH 6 or more 4 feet apart at drip line
INSTALLATIONEach main line (1/2”…large diameters)
diameter has a maximum length…200’Each micro line (1/4”) has a maximum
number of emittersIf possible try to connect emitters directly to
the larger drip tubing lines.
DRIP TUBING Diameter Flow rate Maximum Length
Polyethylene Tubing ½” 320 GPH 200 ft
3/8” 100 GPH 100 ft
¼” 15 GPH 25 ft
Heavy weight vinyl ¼” 10 GPH 20 ft
MAXIMUM TUBING LENGHTS
HELPFUL TIPSAllow ½” poly to sit in the sun
Buy a good punch
Measure twice …cut once
Maximum Number of EmittersTo determine the maximum number of emitters on each line:
For each ½” line add up the water volume of the emitters…maximum volume of emitters is 320 GPH
For each ¼” micro line maximum volume is 15 GPH
FINDING A SUPPLY SOURCELocalLowe’s and Home Depot Internet sourcesThe Drip Store
www.dripirrigation.comSprinkler Warehouse
www.sprinklerwarehouse.comDrip Works USA www.dripworksusa.com
QUESTIONS ?
WATER INFORMATIONA typical area of 20’X40’ (800 sq. ft.) requires
about 4000 gallons of water per monthGarden hoses deliver: Dia. Hose Flow gal/hr Hrs of watering1/2 “ 300 13hrs/mo5/8” 500 8hrs/mo3/4” 600 6.5hrs/mo