Vitrified clay pipe

Vitrified clay pipe

Vitrified clay pipe (VCP) is pipe made from clay that has been subjected to vitrification, a process which fuses the clay particles to a very hard, inert, glass-like state. VCP is commonly used in sewer gravity collection mains because of its reasonable price and resistance to almost all domestic and industrial sewage, particularly the sulfuric acid that is generated by hydrogen sulfide, a common component of sewage. Only hydrofluoric acid and highly-concentrated caustic wastes are known to attack VCP. Such wastes would not be permitted to be discharged into a municipal sewage collection system without adequate pretreatment. [ [http://cfpub.epa.gov/npdes/home.cfm?program_id=3 EPA Pretreatment Program - Office of Wastewater Management ] ]

Notes

External links

[http://www.ncpi.org/ National Clay Pipe Institute] - a not-for-profit trade association comprised of the manufacturers of vitrified clay pipe.


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