February 2020, Vol. 247, No. 2

Tech Notes

Hot Tapping, Flow Stopping for Odd-Sized Pipes

By Del Williams, Technical Writer Mainline Control Systems (MCS), in conjunction with Kleiss & Co., is offering utilities the technology and tooling to tap and stop flow on vintage piping materials and nonstandard-inch sized pipes.  The Kleiss MCS System has performed successfully on tapping and stopping jobs in less-than-ideal environments, including 5-inch outer diameter (OD) (gun barrel) steel in Montana, 5.5-inch OD steel pipe in Texas, 2-inch polyvinyl chloride (PVC) pipe in California, and 20-inch cast iron pipe in New England – 100-year-old vintage. All pipe sizes within the system’s range can be tapped and stopped, making both standar

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