Valve Replacement
Tags
Valve Replacement PeteStop inflatable line stop

Contractor

BC Solutions

Problem

Collector and section of DN500 sewage pipe was in poor condition, with the sectorization valve not functioning.

 collector  Fualty Valve

Solution

BC Solutions is the mechanical contractor for this job. Their recommendation - in low season, the installation of a by-pass was proposed so one of the pumps can be sectorized once the by-pass is in operation and an inflatable line stop is put in place to create a workable seal. The section of pipe in poor condition is cut and a new valve is installed.

Step 1

Installation of polyethylene graft finished in DN200 flange (for the by-pass) and DN250 (for the insertion of the inflatable line stop), in this case installation of gussets for greater resistance.

 DN200 polyethylene graft DN250 Polyethelyne Graft with gussets

Step 2

Performing a pressure test on the installed grafts.

 Pressure Test

Step 3

Assembling DN200 bypass valve and hot tapping.

Assembling DN200 Bypass Valve Hot tapping for DN200 Valve

Step 4

Remove the coupon, install by-pass pipe, install DN250 valve, hot tap and install PeteStop® inflatable line stop equipment.

 Remove coupoon

Step 5

Open by-pass and inflate PeteStop® inflatable line stop to create a workable seal.

 Open byapss

Step 6

Remove old valve, weld idler flange to pipe and install new valve.

 Remove old valve Install new valve

Step 7

Deflate PeteStop® and remove inflatable line stop equipment.

  

Result

The facility and mechanical contractor were impressed with the speed of the job and quality of the seal of the inflatable line stop system.

 Success