If the dripperline lengths of run are long (over 600 feet), higher than operational inlet pressures may be required to achieve adequate flushing velocities (between 1.25 and 2.0 feet per second (fps) is usually adequate).
In many areas, dripperline applications are operated with hot water due to the temperature of the water source, or heating of the water for surface laid dripperline.
In dripperline applications, it is especially bothersome when seamed “tapes” leak at the fitting, which often occurs due to the non-regular shape of the inner and outer diameter.
Drip tape is a type of thin walled dripperline used in drip irrigation.
The first drip tape, a product known as "Dew Hose", was developed in Watertown, New York, in the 1960's by Richard D. Chapin.
Some of these manufacturers claim that their product is not a tape, but a thin walled dripperline, but in popular parlance, both types of products are called tapes.
Furthermore, the dripperline applies water only to a portion of the surface thus maintaining high moisture within the root zone without water logging due to dry surroundings.
The selection of the most effective dripperline is comprised of determining the best type of dripper, dripper discharge (flow rate) and spacing.
A dripperline spacing of 40 at 0.92 gph on a tree spacing of 12 x 7 will result in a flow of approximately 2 gph/tree or four hours of irrigation every other day.
PC dripperline is running across the slope and the elevation drop from the top dripperline to the bottom dripperline in the same zone exceeds 3 feet, it is recommended to increase the spacing between dripperlines progressively as they move down the slope.
To use this chart, calculate the total elevation change from the top dripperline to the bottom dripperline within the zone and then look up the appropriate recommended total increase in dripperline spacing.
Note: Dripperline 1 is at the top of the slope, dripperline 11 is at the bottom of the slope.
www.dura-flo.com /pd-des9.htm (273 words)
Netafim USA(Site not responding. Last check: 2007-11-04)
California growers will now have the opportunity to have their used thinwall dripperline picked up and recycled at no additional cost rather than discard it at a landfill or transport it to a pick-up center.
Thinwall dripperline is a type of tubing used for drip irrigation and is designed to be used for only a few seasons row crop production.
To participate in the program, a grower who is installing Netafim USA thinwall dripperline can simply contact their authorized Netafim USA dealer who will then make the necessary arrangements to have the used product picked up, regardless of who manufactured it.
Netafim Thinwall Dripperline drippers are injection-molded and welded into wall of seamless tubing, supplying the highest level of distribution uniformity.
Streamline Thinwall Dripperline is the perfect choice for row crop growers planting short to medium sized runs up to 1/4 mile during individual seasons.
Typhoon Thinwall Dripperline is the ideal growing choice for growers irrigating large-sized fields with dirty water conditions and rows up to 1/2 mile long.
BioLine is the perfect hydraulic delivery system, considered to be the world's most accurate pressure compensating dripperline.
The inlet of each Bioline emitter is raised.26" from the wall of the dripperline.
Drippers are factory installed at regular intervals, as an integral part of the inside wall of the dripperline, leaving the outside of the tubing completely smooth and seamless.
Netafim USA Forestry Drip Irrigation Systems(Site not responding. Last check: 2007-11-04)
Netafim USA drip irrigation systems use the patented self-cleaning dripper and Techline® dripperline to deliver precise amounts of water and fertilizer to the root zone, as often as necessary.
Netafim USA has in-line dripperline or spray stake systems to help you control water and fertilizer runoff.
Netafim USA precision irrigation products include dripperlines, spray stakes, and hanging sprinklers.
If there is dirt build-up, flush the system with a high velocity of water to wash particles from the line.
If organic matter from channel water is plugging pipes and emitters, inject chlorine into the water to oxidize the matter and flush it from the system.
Acid can also be used to break down large mineral settlements in the dripperline.
Techline dripperline's patented self-cleaning dripper ensures the precise watering of each individual plant, drop by drop, plant by plant.
Later the process spread to the U.S. where it proved crucial in the dry, desert southwest or in landscape areas where traditional sprinklers have not proven effective.
Today Netafim USA dripperline is used for on-surface or subsurface drip irrigation projects across America by homeowners, landscapers, growers, architects and contractors.
www.netafim-usa.com (294 words)
Irrigation Journal-Nov/Dec 2000 - INDUSTRY NEWS(Site not responding. Last check: 2007-11-04)
With Netafim USA's new recycling program, using thinwall dripperline additionally benefits the environment.
Thinwall dripperline is designed to be used for only a few seasons of row-crop production.
Netafim USA recognized the needs of growers and the responsibility every manufacturer has to the environment and wanted to develop a program that was not only hassle free, but cost free as well.
Ideal for tree and vine crops, Netafim heavywall dripperlines provide growers with efficient, money-saving tools to better manage specific water and nutrient requirements.
Drippers are welded to the inside tube wall - the raised position of the internal drippers draws water from the center of the flow path where the water is cleaner, reducing entry of potentially clogging sediment.
Reduces replacement costs and maintenance requirements - saving time and money with a superior dripperline that works better and lasts longer.
Sprinklers & Drippers: Do It Yourself Irrigation(Site not responding. Last check: 2007-11-04)
Agrifim Dripperline, 12 inch spacing, Pressure Compensating, 1 GPH, 100 Foot Roll
Agrifim Dripperline, 18 inch spacing, Pressure Compensating, 1 GPH, 100 Foot Roll
Agrifim Dripperline, 18 inch spacing, Pressure Compensating, 1 GPH, 500 Foot Roll
besttop.ru /cat13400271/page-2.html (497 words)
Drip irrigation: Landscape - Drip Irrigation Netafim USA(Site not responding. Last check: 2007-11-04)
Our products apply a slow, steady application of water to your plants ensuring vigorous growth.
To learn more about drip irrigation for landscape or turf, Techline ® Dripperline and our patented self-cleaning dripper please click here to enter the Landscape drip irrigation site.