GRAYWATER CURRICULUM
Contents
1. Qualified Water Efficient Landscaper GRAYWATER CURRICULUM GLASS SPX Beyond Laundry to Landscape Beyond Laundry to Landscape Gravity Fed Shower Sink Systems Graywater drains through a series of branching pipes and is dispersed into the landscape This system alters the existing plumbing and requires a permit Graywater Source Shower drains e Sinks olope is a key factor gravity fed system Objectives Branched Drain Inside Portion Step 1 Pipe identification Step 2 Obtain a permit Step 3 Installing a 3 way valve Step 4 Optional Installing an actuator Branched Drain Outdoor Portion Step 5 Branched Drain design Step 6 Piping to Irrigation field Step 7 Calculate and dig mulch basins build mulch shields Step 8 Lay pipes to mulch basins Step 9 Install Double Ells 3 Parts for Branched Drain 1 3 way diverter valve 5 1 5 or 2 long sweep 90 bend 2 round valve box or rigid 3 6 Optional 3 way valve actuator gallon pot Backwater valve 3 ABS 1 5 or 2 double ell aka twin 90 4 ABS 1 5 or 2 double ell aka twin 90 w inspection clean out port optional Tools for Branched Drain Below are some tools that may be helpful for a Branched Drain installation Measuring tape otud finder PVC cutting tools ratcheting cutters saw tubing cutters 2 pairs of channel locks Torpedo level Drill 1 5 hole saw 1 4 pilot bit Screwdriver Hammer2. Tin snips Caulking gun Digging tools Shovel pick axe Wheel barrow Permanent marker Gloves and rags Leveling tools 4 level laser level ABS cutting tools ABS saw reciprocating saw or sawzall with appropriate blades 21 8 hole saw Branched Drain System Legend 3 way diverter valve o 1 5 or 2 long sweep 90 bend 7 round valve box or rigid 3 gallon pot Optional 3 way valve actuator ABS 1 5 or 2 double ell aka twin 90 Backwater valve ABS 1 5 or 2 double ell aka twin 90 6 wi inspection clean out port Clean Water Components Step 1 Identifying Pipes Common Pipe Sizes Waste water pipes are sized by the amount of water that travels through them The size refers to the ID or Inner Diameter Toilets to 4 Trap terminology e avatories bathroom sink 1 va or 1 12 inlet Kitchen sinks 1 72 to 2 e Showers tubs 2 but you may see 11 2 or smaller or ido EN eir mid WENT ir 11 2102 P Traps prevent sewer gases from entering the building Step 1 Identifying Pipes How to ID Correct Graywater Drain 1 Check pipe size Larger pipes usually include the toilet water 2 Check for a p trap Visible p trap is from a shower bath or maybe laundry e Kitchen sinks bathroom sinks toilets washer standpipes and laundry sinks have p traps in the house 3 Run HOT water in the drain line f you feel t
3. container around the double ell so it will be accessible for maintenance 1 PVC threaded plug Threaded plug e Install cleanouts before burying Drilled double ells cleanout Drill hole hread 1 plastic cap 42 Activity 4 Plant Placement and Flow Distribution What fraction of the flow exits at each outlet v What kind of plants would you use at each outlet Final Inspection for Permit Check for leaks Take a picture before burying pipes to include in O amp M manual Label pipes every 5 feet CAUTION NONPOTABLE GRAY WATER DO NOT DRINK Best case scenario pipes are bedded in sand with metal detectable tape over line Bury pipes Caulk holes Post signs Post O amp M manual 44
4. facturers guide Example troubleshooting If the 3 way valve s inlet port was changed you ll need to calibrate the actuator Testto see how the actuator is rotating open actuator and observe inside e Adjust actuator s rotation using manufacturers guide 29 Step 4 g Maintenance and Warranty Two seals that need ctc annual lubrication ee e 1 3 year warranty for residential homes depending on the brand Follow recommendations for your specific valve Image from Jandy Valve Actuator I amp O Manual 30 Branched Drain Outside Portion Step 5 Branched Drain design Step 6 Piping to irrigation field Step 7 Calculate and dig mulch basins build mulch shields Step 8 Lay pipes to mulch basins Step 9 Installing Double Ells 31 Step 5 Branched Drain Design Step 5 Branched Drain Design Irrigate larger plants trees shrubs perennials Pipe size will depend on indoor plumbing typically 2 inch e Pipe size can be reduced at double ells Each split divides flow in half if level Toensure an even split have a 2 straight section of pipe before splitter If pipe enters splitter at an angle the water won t divide evenly Plan your branched drain system so the pipes will always have a 2 slope Consider obstructions pipes roots etc that can make the installation more challenging 33 Activity 3 Branched Drain System Design e The yard is flat e Sketch h
5. he pipe heat up then you know what s going into It f there is any question about the toilet being connected flush the toilet feel and listen for water Second story bathrooms almost always connect the toilet and shower drains in the floor Need help Partner with a plumber for indoor modifications Step 1 Identifying Pipes Common Plumbing for a Second Story Cold water supply Kat water supply Tub drain Teile drain plumbingrepiping com 9 Tub shower Sinks Trap under floor Trap below sink 1 2 grain 1 14 2 drain e Vents can be confused for sink drains House main sewer lines oldest to newe E M e Clay Cast Iron Steel Plastic PVC ABS Most commonly Plumbers can help identify pipes used material Lavy sink drain If the graywater drain connects to the toilet the water is unusable and against code ohower drain p trap LI loilet vent F E E a J h 4 aii yim D a 0 2 A i n v d p i NS Af NEN Toilet drain Laundry p trap inside wall no trap visible under floor Activity 1 Identifying Plumbing Identify the fitting source of water and material for the picture on your activity 12 Step 2 Obtain a permit from Local Permitting Agency Obtain a permit from the authorized permitting agency Follow permitting procedures and proper inspections e Keep mind
6. leave from Standard o clock 1 37 Meter to your user manual to 2 3 determine the appropriate cam 3 seme gate 3 2 a Tee eee ra l XY INN NUM Goldline Installation Manual Model GVA 24 i a IE 23 Hemove handle and the 4 screws on the 3 way valve Attach actuator by replacing the short screws with the longer screws provided by the manufacturer Replace handle manual operation 24 a Determine best location for switch near an outlet I Actuator switches can be located inside a sink cabinet or attached to any wall b Run the wire from the actuator to the location of the switch box c Wire according to the manufacturers instructions for your actuator d Drill holes only if necessary Step 4 d Mount Electrical Switch Box In the location selected mount the switchbox using the screws provided with the actuator kit 26 Step 4e Tuck in Wires Close Box Plug in Transformer 2 Step 4 f Test the Actuator Verify actuator operates the 3 way valve properly Turn toggle switch up Observe what happens with the actuator Turn toggle switch down Observe what happens with the actuator Once it s working label the toggle switch eg up sewer 28 Step 4 g Troubleshooting If it doesnt ll need to open it and adjust the pins using the manu
7. ow you could split up the graywater and pipe between the plants e Try and be accurate with the turning options 90 45 60 22 degree bends and list the ABS drainage fittings you used Use the least amount of materials possible Pear Orange Apple Tree Tree Tree Complete only the outside portion of the system Raspber ry Patch 34 Activity 3 Branched Drain System Design 35 Creating zones with a 3 way valve gt Wm vt 5 47 m xe gt 3 wa IVerter Valve rn 4 z L a st 5 E E Ac lt UE i 2 lt N 027 dire mt uk 2 sex d Ne 2 ar gt S E Ap Mv i lt gt k EM VT 2 1 A QW k 4 Sie 7 7 l S ae aem we i P 4 es TR E Ne vo EN 2 52 Be 4 V Ex E i 1 gt ay 6 gt Y e m BET n A i Tr gt 5 Y Y 2 1 i graywater zones t Zones irrigate different areas of the yard This house is dual plumbed so both shower and laundry go into the system 36 Step 6 Piping to Irrigation Field e You may have to pipe around decks patios etc e You may need to bypass hardscape e Options go under it go around It remove it cut a strip of it cut across the driveway and patch in e Maintain a downwards slope Paint e
8. r instructor demonstrate how an actuator Is wired Follow along on your diagram Step 4 Installing an Actuator Common Brands Kits are available containing a transformer fuse switch and plastic box o Jandy Valve Actuator 120 200 e Goldline Valve Actuator 90 120 Pentair Valve Actuator 120 160 e Intermatic Valve Actuator 60 120 20 lt y Electrical switch box and toggle switch Sandy Valve Actuator JVA 2444 Use 18 gauge wire if you need more wire LEADER ELECTRONIC CLASS 2 POWER SUPPLY MODEL NO 44824082507 P N 102 2396 INPUT 120VAC 80Hz 27W OUTPUT 24VAC 825mA im Gi MADE IN CHINA Ei 7 uus Step 4 Installing an Actuator Check cam settings for proper orientation of the actuator on the three way valve Mount actuator on 3 way valve Install transformer and wire to electrical switch box Mount electrical switch box Tuck in wires close box plug in transformer Test the actuator Troubleshooting Follow manufacturer instructions to calibrate the actuator if necessary 22 Step 4 a Cam Settings for Valve Orientation A Standard ES Most Actuators can be mounted to CAM SETTING vom the valve in four different positions The cam setting determines which LOWER CAM UPPER CAN Er RUN port the water will be entering from as a 1 3_ and which port it will
9. that permitting requirements may need to be integrated in to the timeline and budget of the project Estimated permit cost MERE Branched Drain Pumped System Range 50 550 250 550 Typical 150 250 550 33 50 source Greywater Action Residential Greywater Irrigation Systems in California An Evaluation of Soil and Water Quality User Satisfaction and Installation Costs 13 Step 3 Install a 3 way Diverter Valve Install a 3 way diverter valve in the drainpipe of the fixture you will be collecting graywater from o The valve must be installed after the p trap and vent but before the connection to a toilet or kitchen sink drain e f you must install the valve in an inaccessible area because of space considerations you can add a motor called an actuator to operate the valve remotely 1 ABS glued into 3 way valve All sides 2 ABS 16 Testing your 3 way valve Inside Wait for glue to dry Hun water and check for leaks Step 4 Installing an Actuator If the 3 way valve is difficult to access you will need to install an actuator to operate the 3 way valve remotely An actuator is an electrically powered motor that turns the 3 Way valve Used when e 3 way valve is not easily accessible e g tiny crawl Space Frequent turning of the valve Is necessary 18 Activity 2 Wiring an Actuator As you go through the following slides watch you
10. xposed PVC pipe to protect from UV e Caulk holes at building exit points Step 7 Mulch Basins Refer to Class 3 and Type of Soil Minimum sqft Max absorption Table 1602 10 for of irrigation Capacity information on sizing area per 100 gallon sqft the irrigation area and gallons of day class 5 for information graywater day on mulch shields Coarse sand or 20 5 0 Plan for mature plant grave size Fine Sand 25 4 0 Sandy Loam 40 2 5 Sandy Clay 60 1 7 Clay w 90 1 1 considerable sand or gravel Clay w small 120 0 8 amounts of sand or gravel Step 8 Lay pipes to Mulch Basins Slope Slope A downward fall is needed to keep the water moving Install pipes at 2 grade downhill or 1 4 inch per foot e Maintain flow and help solids move through pipe Positive slope Ideal Excessive slope Not ideal 39 Slope All parts of system need proper slope More slope when flow is downhill is okay Level pipes at splitters are required If level put 1 block on 4 level to get 296 slope 4 gt gt 2 Slope EE ee 4 level 40 Double Ells are also called Flow Splitters Each split divides flow in half Flow Splitters must be level Pack soil under pipe then stake or bury points along line to keep grade Check that all Double Ells are level across the split Double Ells are multifunctional as cleanouts Create an access point by putting a
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