Related Manuals for Netafim Techline CV
Summary of Contents for Netafim Techline CV
- Page 1 Techline CV Design Guide ® Subsurface or On-Surface Pressure Compensating Dripperline with Check Valve...
-
Page 2: Table Of Contents
What Do These Layouts Have in Common? ..............6 Basic Grid Layout ......................7 Basic Lite Layout ......................7 How to Calculate Equal Techline CV Row Spacing ............7 Length of Techline CV Rows ..................8 Techline CV Maximum Length of Laterals Chart ............8 Center Feed Grid Layouts .................... - Page 3 Compressed Air Winterization ..................21 TECHLINE CV TECHNICAL DATA Applications, Specifications and Features/Benefits ........... 22 Exploded View of Techline CV Dripper from Above and Below ......... 23 Design Formulas ......................24 Specifications ......................25 Techline CV Application Rate Tables ................26 Techline CV General Guidelines .................
-
Page 4: Overview
® INTRODUCTION This manual covers the basics of design, installation, and maintenance of Techline CV integral dripperline. Included are design steps, technical data, design layouts, as well as some design and installation details and checklists using both the “Grid” and “LITE” layout methods. -
Page 5: Design Criteria
C V D E S I G N G U I D E ® DESIGN • Designing with Techline CV follows the same basic rules as designing with Techline, sprays and rotors. CRITERIA • Point of connection, static and operating pressures, flow rates, and type of materials being irrigated are the same. -
Page 6: Basic Design Steps
• Anytime you want to create an even wetted pattern of water throughout an area. STEPS • Since the object of sprinklers is also to create an even wetted pattern, you can use Techline CV anytime you can use sprinklers. -
Page 7: Types Of Layouts
• This method uses supply and exhaust headers with rows of Techline CV connected at each end • The Supply Header delivers water to each row of Techline CV • The Exhaust Header forms a continuous loop, or return leg, so all rows of Techline CV are being supplied from both ends •... -
Page 8: Basic Grid Layout
(Zone Water Requirement calculations are on page 10). • Start rows of Techline CV 2” - 4” away from the edge of hardscapes, and move across the area with equal row spacing that does not exceed the recommendations of Table 1. (The 2” setback will help provide enough moisture to prevent heat damage to plant material generated by hardscapes such as asphalt). -
Page 9: Length Of Techline Cv Rows
• The chart also determines what the operating pressure of the zone needs to be. Example - If you have a 322ʼ lateral of 0.6 GPH/12” Techline CV, it will need 35 psi to operate properly. If it is from 323ʼ- 369ʼ, it will need 45 psi. -
Page 10: Other Grid Layout Considerations
Exhaust Header Exhaust Header • To reduce the number of glue joints, saddles or insert fittings in a header, transition to Techline CV and Techline fittings to make up subheaders. • Make sure to follow the guideline of not exceeding 5 GPM in the “sub-header” zone. -
Page 11: Zone Water Requirements
BASIC ZONE WATER REQUIREMENTS: DESIGN • Once the Techline CV is laid out, we need to identify total zone flow. This will help determine STEPS mainline, submain as well as supply and exhaust header sizing, valve, filter, and pressure regulator selection. -
Page 12: Fittings
fitting from the supply piping to the Techline CV. Further, you will use Techline CV fittings to connect the rows of Techline CV to the headers. If you are using a LITE layout, you will also use a transition fitting from the supply piping, as well as a fitting at the end or midpoint of the zone so that a flush point can be installed. -
Page 13: If An Automatic Line Flushing Valve Is Desired
IF AN AUTOMATIC LINE Techline CV Manual Line FLUSHING VALVE IS Flush Valve NOT DESIRED: • It is because holding the water in the Techline CV is desired and, • Procedures have been Techline Shut-Off Valve #TLSOV established to manually (blank tubing may be flush the lines during the... -
Page 14: Air/Vacuum Relief Valves
Gravel Sump zone is turned on, thus eliminating air pockets and speeding up dripperline operation. (Because water stays in a Techline CV zone Installing A/VRV anytime the elevation across the To Laterals zone is less than 4 feet, this is not an issue). -
Page 15: Filters
• Disc filters come in a variety of sizes and filtering capacities. • Rule of Thumb: Use 120 or 140 mesh filters for Techline CV designs. Techline CV only requires 120 mesh filtration. If a finer mesh filter is used, it may require more frequent cleanings. -
Page 16: Low Volume Control Zone - Low Flow
N E T A F I M T E C H L I N E C V D E S I G N G U I D E ® BASIC LOW VOLUME CONTROL ZONE - LOW FLOW LVCZ10075-LF DESIGN • Hunter 24VAC PGV-100JT-G 1” valve STEPS •... -
Page 17: Slopes And Berms
® BASIC SLOPES AND BERMS: Taller Slope Irrigation Method DESIGN Techline CV has a check valve built into each STEPS dripper. This allows the dripperline to hold 18" at Top back up to a 4 feet column of water. As... -
Page 18: Pressure & Flow Checks
® BASIC PRESSURE & FLOW CHECKS: DESIGN • One of the best means of ensuring a Techline CV zone is operating properly is to test the pressure at STEPS regular intervals. (continued) • By taking and recording the pressure while the zone is running, you can ensure that the zone is working as installed. -
Page 19: Techline Cv In Turf
WHERE AND WHY TO USE TECHLINE CV IN TURF: • Long, odd-shaped or narrow areas: –... -
Page 20: Tips For Using Techline Cv In A Newly-Sodded Lawn
– Techline CV is about 90% efficient vs. overhead irrigation, which is about 60% efficient • Techline CV seals in 1.3 gallons of water for every 100', saving water from draining out of the dripperline each time the zone shuts off. -
Page 21: Special Applications And Tips
• One method of ensuring moist soil is to install a length of Techline CV along a length of unclad copper wire being used for grounding purposes. The Techline CV is installed in the usual method. -
Page 22: Techline Cv Winterizing Instructions
• Follow manufacturer instructions for any automatic zone valves. COMPRESSED AIR WINTERIZATION Follow the same initial procedures for a Techline CV zone as you would for a zone of overhead sprinklers. Note: Techline CV fittings are rated to 50 psi without clamps, so the air pressure must be adjusted according. -
Page 23: Techline Cv Technical Data Applications, Specifications And Features/Benefits
- More precise watering - Entire lateral begins operating at the same time • Built-in Physical Root Barrier: Drippers are protected from root intrusion without chemical reliance • Dark Brown Color: Visually identifies Techline CV, better blending into surrounding colors of the landscape •... -
Page 24: Exploded View Of Techline Cv Dripper From Above And Below
N E T A F I M T E C H L I N E C V D E S I G N G U I D E ® Techline CV – Exploded View of TECHNICAL DATA Dripper from Above and Below... -
Page 25: Design Formulas
Dripper Flow Rate = Gallons per Hour Flow of One Dripper Dripper Spacing = Spacing in Inches of Drippers Inside Tubing Dripperline Row Spacing = Inches Between Techline CV Laterals (Rows) Number of Drippers in a Zone = Formula 1.3... -
Page 26: Specifications
9 = 0.9 GPH For blank tubing use: TLCV010=1,000', TLCV0025=250', TLCV001=100' Techline CV Ordering Example: TLCV26-12025 is Techline CV, .26 GPH, 12" Spacing, 250' Coil. TLCV010 is Techline CV Blank Tubing, 1,000' Coil. TECHLINE CV Dripper Flow Passage and Filtration Recommendations... -
Page 27: Techline Cv Application Rate Tables
N E T A F I M T E C H L I N E C V D E S I G N G U I D E ® Techline CV Application Rate Tables TECHNICAL DATA TECHLINE CV 0.26 GPH Dripper Flow (in inches per hour) Techline CV Row Spacing Dripper Spacing 12" 13"... -
Page 28: Techline Cv General Guidelines
Maximum spacing recommendations: Following these spacing guidelines, dripper flow selection can be increased if desired by the designer. TECHLINE ® CV Maximum Length of a Single Lateral (feet) TABLE 2 TECHLINE CV DRIPPER SPACING INLET PRESSURE (psi) 0.26 0.26 Dripper Flow Rate (GPH) TECHLINE ®... -
Page 29: Disc Filter Sizing
N E T A F I M T E C H L I N E C V D E S I G N G U I D E ® Disc Filter Sizing TECHNICAL DATA DISC FILTER Recommended Filter Sizing Filter Size "... -
Page 30: Techline Cv With Techfilter
Agan Chemical Manufacturers Ltd. NOTE Techfilter with Techline CV is sold together for use on a new installation as a part number as shown on pages 31 - 33. Techfilter cannot be sold without the proper amount of Techline CV. -
Page 31: Techfilter Specifying Information
11,688 Use the flow rate of the zone or the number of feet of Techline CV to determine what size filter to use. Example: If you have a 7.37 GPM zone of .4/12" Techline CV (7.37 GPM = 1,100' of dripperline) use the 1" Techfilter. Note: One or more Techfilter sizes may work for your application. -
Page 32: Techfilter With Techline Cv Model Number Descriptions
TECHFILTER with TECHLINE CV Model Number Descriptions DATA Filter Size Model Number Description " TF075912-100CV " Techfilter w/100' .9 gph 12" Techline CV " TF075912-1000CV " Techfilter w/1,000' .9 gph 12" Techline CV " TF075918-100CV " Techfilter w/100' .9 gph 18" Techline CV "... - Page 33 DATA Filter Size Model Number Description 1" Long TF1OL912-500CV 1" Long Techfilter w/500' .9 gph 12" Techline CV 1" Long TF1OL912-1000CV 1" Long Techfilter w/1,000' .9 gph 12" Techline CV 1" Long TF1OL918-800CV 1" Long Techfilter w/800' .9 gph 18" Techline CV 1"...
- Page 34 TECHFILTER with TECHLINE CV Model Number Descriptions DATA Filter Size Model Number Description 2" TF20912-1000CV 2" Techfilter w/1,000' .9 gph 12" Techline CV 2" TF20918-1400CV 2" Techfilter w/1,400' .9 gph 18" Techline CV 2" TF20918-1000CV 2" Techfilter w/1,000' .9 gph 18" Techline CV 2"...
-
Page 35: Techline Cv End Feed Layout
N E T A F I M T E C H L I N E C V D E S I G N G U I D E ® Techline CV End Feed Layout TECHNICAL DATA Remote Control Valve with Disc Filter and PRV... -
Page 36: Techline Cv Center Feed Layout
N E T A F I M T E C H L I N E C V D E S I G N G U I D E ® TECHNICAL Techline CV Center Feed Layout DATA Manual Line Flushing Valve Plumbed to PVC or Poly... -
Page 37: Installation Checklist
Make all Techline CV to fitting connections while flushing the system. Make connections as indicated in Netafim detail(s) While flushing, connect Techline CV laterals to the exhaust header as indicated in Netafim detail(s) Install line flushing valve(s) as indicated in Netafim detail(s) Install other Netafim accessories as indicated in Netafim detail(s) -
Page 38: System Inspection Checklist
C V D E S I G N G U I D E ® SYSTEM Project: INSPECTION CHECK LIST Date: 12” 18” 24” Techline CV Dripper Spacing 12” 18” 24” Other Techline CV Lateral Spacing " 0.26 GPH 0.4 GPH 0.6 GPH ... -
Page 39: Fittings
N E T A F I M T E C H L I N E C V D E S I G N G U I D E ® FITTINGS Techline TELL Techline TLCOUP Techline TL075MA or TL050MA Techline TL075FTEE Elbow Coupling Male Adapter... -
Page 40: Most Frequently Used Charts
Maximum spacing recommendations: Following these spacing guidelines, dripper flow selection can be increased if desired by the designer. TECHLINE ® CV Maximum Length of a Single Lateral (feet) TABLE 2 TECHLINE CV DRIPPER SPACING INLET PRESSURE (psi) 0.26 0.26 Dripper Flow Rate (GPH) TECHLINE ®... - Page 41 N E T A F I M T E C H L I N E C V D E S I G N G U I D E ® NOTES...
- Page 42 NETAFIM USA 5470 E. Home Ave. • Fresno, CA 93727 888.638.2346 • 559.453.6800 FAX 800.695.4753 www.netafimusa.com M-TCVDG 5/04...