Techline CV Design Guide

OVERVIEW

• Netafim is the world leader in low volume irrigation. Since the early 1960's Netafim has pioneered the science of subsurface, on-surface and point source irrigation and manufacturing. Serving more than 100 countries worldwide, Netafim products are sold into the Landscape & Turf market, as well as agriculture, greenhouse and nursery, wastewater, mining and forestry.

• The Techline family of products have been used successfully in landscape since 1987 in North America. Techline CV allows for even more water conserving designs because check valves are built into every dripper.

• Landscape Architects, Contractors, Nurserymen, Designers and Consultants recognize the benefits of using low volume and drip irrigation for new plantings because of its accelerated plant growth compared to overhead spray and rotor irrigation. Coupling the rapid growth with dramatic water savings and low volume irrigation becomes an important part of any irrigation system.

• With the flexibility and quality of Netafim products, architects, designers, and contractors have highly sophisticated solutions to client and installation issues by bringing drip and subsurface components together to grow plants, trees, shrubs, groundcover, and yes, even turf.

• Designing with Techline CV follows the same basic rules as designing with Techline, sprays and rotors.

• Point of connection, static and operating pressures, flow rates, and type of materials being irrigated are the same.

• Designing similar areas into a zone and not mixing products with different application rates is just like sprinkler design.

• The essential differences include knowing the type of soil you are working with, and the method of layout you use in the design.

SITE SURVEY

• Obtain or draw a scaled plan of the site to be irrigated. Identify all slopes on the plan.

• Identify the type of soil (sand, loam or clay).

• Determine types of materials to be irrigated, turf, groundcover, shrubs, plants, and trees.

POINT OF CONNECTION

• Type of water, potable, well, pump, effluent, etc.

• Pressure & volume available - Static and operating tests.

WHEN SHOULD YOU USE TECHLINE CV?

• Anytime you want to create an even wetted pattern of water throughout an area.

• Since the object of sprinklers is also to create an even wetted pattern, you can use Techline CV anytime you can use sprinklers.

CHOOSING THE PROPER TECHLINE CV:

• From Table 1, answer two questions:

1. Are you irrigating a Shrub & Groundcover area or Turf?

2. Is the soil Clay, Loam or Sandy?

• Follow the proper column listed under TURF or SHRUB & GROUNDCOVER to identify the proper Techline CV. Example - If you choose Shrub & Groundcover, with loam soil, 0.4 GPH/18" Techline CV is the proper choice. (Each dripper will deliver 0.4 GPH and the drippers, mounted inside the tubing, are spaced 18" apart.)

• What other information is in the General Guidelines Chart?

1. How far to spread out the laterals is listed on the "Lateral (Row) Spacings" line. (For this example, rows should be evenly spaced anywhere from 18" - 24" apart.)

2. The corresponding application rates and time to apply are listed under the Lateral Spacings line. (With rows of 0.4 GPH/18" Techline CV every 18" apart, the application rate is 0.29 inches per hour and it will take 52 minutes to apply 1/4" of water. If the rows are 24" apart, the application rate is 0.21 inches per hour, and it will take 71 minutes to apply 1/4" of water. For other row spacings, click here.)