PLCS Sensor Bags

PLCS Sensor Bags

PLCS Sensor Bags continuously monitor pressure in the main during shutdown, without the need for an additional tap.

The bladder like the Flowstop Bag is held inside a synthetic fabric permitting mains entry through a significantly smaller tap hole than any competitive product

    Features & Benefits:

  • Gauges record the internal bag pressure and continuously record the upstream pressure in the main throughout a shutdown operation
  • The bags are barrel shaped to increase load on the pipe wall to retain position and at the same time increase the surface seal area to minimize gas bypass
  • Sensor Bags are clamped to a semi-rigid inflation core to control entry direction and prevent reversal in the main or bag loss during sudden deflation
  • Standard sizes are available for all cast iron and steel mains from 2″-48″
  • Special sizes for PE plastic pipe
  • Rated at 1¼ psi for mains up to 12″
  • Available with rigid inflation control tee and rubber entry stopper

In an “open-hole” Double Block and Bleed shutdown, Sensor Bags are recommended for use in pairs at each end of the shutdown. By using 2 Sensor Bags not only is the internal bag pressure recorded, but it is possible to confirm a zero pressure zone between the bags as well as separately monitor the upstream and downstream mains pressures.