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| New low head pipe for irrigation projects  N-12 Low Head Pipe is an innovative pipe designed to meet the need for water transportation and irrigation. ADS Low Head pipe can be utilized for ditch enclosures for irrigation, irrigation pipe replacement, and other low head irrigation projects. The product is available in 30" through 60" diameters, and exceeds the requirements for Type S pipe under AASHTO M294 and ASTM F2306 due to its hydrostatic design basis pressure rated resin and advanced connection design. The ADS N-12 Low Head pipe joint, recognizable by its purple branding wrap is a modification of the integral bell-and-spigot joint used in N-12 WT pipe.Longer bells and spigots provide increased joint offsets while maintaining watertight performance. Multiple ceramic/polymer wraps are used on the longer bell to provide additional sealing area and ease of joint assembly in field conditions. The spigot has been designed with space for a second optional gasket to provide redundant sealing of the joint. These modifications provide a watertight yet flexible joint that can handle the pressures associated with low head irrigation projects. Low Head pipe's strength is derived from its structural flexibility and allows it to support H-25 live loads with a minimum of 12" of cover. HDPE's material makeup is highly resistant to chemical attack and is unaffected by soils or effluents with pH ranges of 1.5 to 14. The pipe is extruded with a pressure-rated resin in the liner portion of the pipe which allows continuous pressure to be applied without detrimental long-term effects. The smooth interior provides superior flow capabilities that are essential for efficient transmission of irrigation water. write your comments about the article :: © 2006 Construction News :: home page |