We
have done unitied protect device after valve rubber seat adjusted.Also we
minimized the projected rubber parts in order to protect falling off of
perfomance index by transformation of rubber seat when reserve pressure make an
effect to valve.
Disc positioning mechanism
To
protect sink or rising of disc, we settled adjusting bolt underside of valve
bottom stage.Also,it protected one side wear of disc seat part and then
increased the performance index of valve.
Shaft locking
device
We have settled shaft locking device to protect valve
disc revolution when you disassemble the valve operation apparatus(worm gearbox)
due to maintenance or interference of the valve operation apparatus at the time
of big valve installation.