The 3490MJ tapping sleeve from PowerSeal is constructed of heavy gauge type 304 18-8 stainless steel.Click here to enlarge imageThe tight seal provided by the gaskets and the stainless steel retaining rings welded to the shell also allow the tapping sleeve to withstand higher working pressures.
"We have areas where the pressure can reach 250 psi and we don't allow for any other type of sleeve besides the 3490. It has a great ability to seal against high pressure and withstand that pressure over time," said Donovan Larson, Senior Project Engineer for Consolidated Public Water Supply District Number C-1 in Barnhart, MO.
Inventory Reduction
Inventory reduction and hard cost savings were the main reasons PowerSeal developed the new tapping sleeve. A number of its customers in the water works industry had a desire to reduce operating and investment costs associated with the installation, maintenance and repair of pressurized water lines. Specifically, they wanted to reduce their inventory of pipeline accessory products.
"Since the 3490MJ Tapping Sleeve takes a standard valve, it helps reduce inventory. This is a big factor when working with a large municipality, where the installation of more than 500 valves per year is not uncommon. It makes a difference not to have to purchase and store separate tapping valves. And since a tapping valve is more expensive, you do realize some hard cost savings." Larson said.
Ease of Installation
In addition to reducing inventory, the 3490MJ also helps streamline the tapping sleeve installation process. No welding or caulking is required, and the only tool needed for installation is a standard wrench.
"It's simplicity and ease of installation is a plus. It's easier for one person to install on small diameter pipes, and 2 people can handle it on pipes of larger diameters. It's just much easier to put together, since there are not a lot of parts. And the mechanical joint is more forgiving, meaning it can take a little more ground movement while still remaining watertight," said John Keller of Viking Supply Company in Florence, KY.