The more than 75 years of ongoing research on iron pipe corrosion and the use of polyethylene encasement has led to this type of corrosion mediation becoming the accepted industry practice for protecting ductile iron pipe. So, the question many may ask is; “Since I had such success with standard polyethylene encasement, why should I now use V-Bio Polyethylene Encasement instead?” To best answer this, it’s imperative to look at what specifically V-Bio provides that is not available with standard polyethylene encasement.
Can McWane Ductile provide bonded coatings? A good question recently posed and more frequently asked due to a greater recognition of potential corrosive environments. To correctly address this question, some other questions need to be answered first.
For generations, McWane Ductile has been an industry leader in the manufacture of water distribution and infrastructure products. The history of McWane Ductile, a family owned company, has beginnings dating back as early as 1871, when Charles Phillip McWane entered the foundry business in Lynchburg, Virginia, with his sons Harry and James Ransom (JR).
When designing or constructing ductile iron pipe utility projects, there is often a discussion of about what joint to use for restraint at the fittings - TR Flex® fittings or the more common Mechanical Joint (MJ) fitting with retainer glands?
As a contractor or engineer, what is important to you? Time, flexibility, or cost? Let me guess, you want all three. Below we will look at some of the items to consider that may assist you in this decision.
McWane Ductile offers multiple services for our customers extending far beyond manufacturing ductile iron pipe. From design to installation, we take great pride in providing education to water professionals throughout the water industry.
Article last updated 8/12/20
Ductile Iron Pipe is a tested and proven solution to sewer infrastructure needs in America. It’s not a cut and dry solution, though, and you as owners and consulting engineers have several options to choose from.
One thing that has often confused users (whether I’m talking with engineers, distributors or contractors) is the difference between “Thickness Class” and “Pressure Class” pipe. While both refer to a specific metal wall thickness of the pipe barrel, in this article we will discuss the history of the two class standards, and what class of ductile iron pipe you should use in your application.
There are several methods for restraining Ductile Iron Pipe joints, and a common question from our customers is, “Which method of restraint is best—locking gaskets or boltless restrained joints?” Both methods are effective, but the best choice for your project depends on the type of installation, the operating pressure of the line, and the diameter of the Ductile iron pipe being used. In this #IronStrong Blog, we will compare two common restraint options offered by McWane Ductile: Sure Stop 350® Gaskets and TR Flex® Pipe.
Cement-mortar lining for iron pipe has been used for nearly 100 years. The first installation of gray iron pipe with a cement lining was recorded in Savannah, GA in 1922. Todays modern Ductile iron pipe still utilizes cement lining for a safe and reliable means of providing clean drinking water to millions of people every day.
On occasion, however, the cement lining may have incurred some damage in the field. The lining, although very durable, does not have the same resistance to bending stress or impact as the pipe itself. Certainly, the pipe or fitting should be checked for further structural damage, but once determined the affected area is only the cement lining, repairs can be made under the applicable provisions within the ANSI/AWWA C104/A21.4 standard CEMENT-MORTAR LINING FOR DUCTILE IRON PIPE AND FITTINGS.
All ductile iron pipe manufacturers use markings in a similar manner to assist customers in selecting the right material for the project. This includes verifying the material is suitable for the application intended (i.e. water or sewer) as well as adhering to the project requirements as stipulated by the owner/engineer for pipe class, lining, and exterior coating.
Because the colors used by each manufacturer may vary, we will explain how McWane Ductile applies these markings and describe their need and locations.
In a continuous effort to make your job easier, we have developed an online submittal builder to quickly and neatly package your personalized presentation.
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Looking for answers to your DI pipe questions? Find decades of Ductile iron expertise with installation guides, videos, tip sheets, training resources, and more in our Learning Center.
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Stop struggling with those hard-to-figure field calculations and put ease and efficiency right at your fingertips with our Pocket Engineer for mobile and desktop devices.
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