non-pressure pipe

non-pressure pipe

Pipe designed for use in conveying a liquid only by gravity; does not have a pressure rating.
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There is a need for buried plastic non-pressure pipe for movement of rainwater and sewage.
Key research programs recently initiated involve the utilization of ultra-wide band signals to see through pipe walls, developing and testing high-temperature cured-in-place-pipe (CIPP) resins, developing decision support systems for estimating construction costs and selecting appropriate technologies, the use of polymer sprays for pressure and non-pressure pipe rehabilitation, developing geopolymer concretes and understanding machine-soil interactions during pipebursting.
ZF 0260 is said to offer more cost-effective stabilization of non-pressure pipe at lower use levels.
Non-pressure pipe is commonly supplied in Classes 1500, 2400, 3300, 4000, and 5000.
When asked where he thinks trenchless technology is headed, Majdalani had this to say: "The focus in the past has been on the gravity systems (non-pressure pipe).
The earliest recorded use of PVC non-pressure pipe in the United States dates back to 1954 at Howard University in Washington, D.C., where PVC was used for a waste line.
It remains in the product line which now includes pressure and non-pressure pipes from 18 to 110 inches.
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