RICHARDSON, TEXAS - Phillips Driscopipe Inc. introduced a system of large-diameter polyethylene pipe for potable water, with diameters matching those of ductile iron, steel and PVC, at the recent American Water Works Association show, held June 18-21 in Anaheim, Calif. By using the same diameters as competing pipe, Driscopipe's 4000 pipe is an exact fit with existing fittings, used for iron pipe. Previously, PE pipe was only available in diameters used for steel pipe.
Phillips Driscopipe developed new dies and sizing sleeves to extrude the new pipe.
The Richardson-based company, a unit of Phillips Petroleum Co., also created a proprietary PE mechanical joint adaptor to connect the pipe to ductile iron fittings, plus a hot-tapping T-shaped connector with a built-in cutter.
The 4000 Series pipe comes in diameters ranging from 4 inches to 24 inches, with pressure ratings up to 200 pounds per square inch. Driscopipe 4100 pipe diameters go up to 54 inches, to match iron pipe.
In other PE water pipe news, Indianapolis Water Co. this year used sidewall fusion tapping to join household service lines to its high density PE water mains. Phillips Driscopipe said this is the first use of the technology by a U.S. water utility.
Indianapolis Water Co. began using sidewall fusion tapping to solve leak problems, which the utility experienced when it used standard mechanical service saddles on the plastic in 1994. Standard, mechanical-tapping, T-shaped connectors, if not properly installed, may not compensate for expansion and contraction of the PE pipe, according to Phillips Driscopipe.
Phillips Driscopipe extrudes PE pipe at five plants.
A distributor, Irrigation Supply Inc., based in Louisville, Ky., provided the Driscopipe services lines to Indianapolis in 500-foot coils.