INSTALLATION OF VALVE UNDER PRESSURE
From DN80mm up to 900mm we can provide PLUG 3 COSMO KOKI valves (called also “stopper” or “vanne 3D”) that can be installed on pressurized water/sewerage/gas pipelines. This valve can be installed without stopping the operation. A typical use is for the installation of a by-pass pipeline for partial renewal of the network. A chemical plant can safely renew its fire fighting pipeline without stopping its production.
Put the body around the pipe 
Install the gate valve 
After drilling the pipe, remove the cut part 
Insert the plug 
Remove all installation equipment and fix the bonnet 
Close the valve
NEW P3
Presentation video of the new generation of P3 valves: