V-Bio is easily installed in the field prior to pipe installation, making it cost-effective and easy to use. DI pipe and V-Bio can be installed in nearly any weather condition. No other product on the market compares.
Polyethylene encasement has proven to control corrosion in aggressive soils for more than 50 years and is cost-effective. The investment in V-Bio is minimal compared to the project's overall cost, especially when compared to the vastly more expensive alternative of bonded coatings used by the steel pipe industry. Not to mention the even higher costs associated with cathodic protection that is widely used in conjunction with steel.
Bonded coatings used to protect steel pipe are very expensive. Other issues that plague bonded coatings are handling and patching. The thin wall of steel pipe may not have enough beam strength to support its own weight, making for difficult handling.
It is difficult to handle a steel pipe section through installation without some damage to the bonded coatings. Any void in the bonded coating dramatically increases corrosion's potential, and these voids must be repaired. Contractors do not have the luxury of waiting until the sun shines to get the job done.
Time is money, and these folks need a product that is easy to work with, such as DI pipe. Some steel pipes are also coated with cement mortar, which is porous and subject to cracking. Again, any void in the coating increases the potential for corrosion of steel pipe.
A recent water pipe project at a major university involved installing dual 36-inch DI pipelines underneath a critical building on campus. The lines were installed to transport water to a chiller system to cool other buildings.
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The piping material selected for this project was Ductile iron because of its ability to withstand ground shift and heavy pressures from the structure that rests above it. PVC, being weak in nature, tends to burst into small pieces due to heavy pressures versus stronger materials such as DI that will not obliterate.
PVC failures also have a history of being catastrophic. That is, not just a loss of some water or water pressure but a TOTAL LOSS of water. This instability is a severe issue for seismic prone areas. Not only is there a threat of damage from earthquakes, but also vulnerability to destruction from fires that typically follow the earthquakes. If theres no water, theres no fire protection.
PVC pipe can also be adversely affected in areas prone to wildfires. For example, the City of Santa Rosa, California estimates the repair of the contaminated Fountain Grove water system could take up to two years. Test results conducted on PVC pipelines indicated they absorbed benzene and other chemicals, resulting in an advisory to residents to not drink or bathe in the water. Replacement costs are estimated at more than $43 million dollars.
Permeation
DI pipe is impermeable and protects the water supply from toxic infiltration. The C909-16 Molecularly Oriented Polyvinyl Chloride Standard states that polyvinyl chloride may be subject to permeation by low molecular weight organic solvents or petroleum products. Why take a chance with a permeable material?
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