SAFETY VALVES – TESTING, SERVICING AND ADJUSTMENT

Our Department for testing and adjusting of safety valves is accredited according to the standard ISO/IEC 17020:2005 for testing and adjustment of safety valves from 0,35 bar to 187,5 bar. We are equipped with stationary valve test benches, as well as portable valve test bench and LEGATEST device for on-site testing and adjustment of safety valves.

The process servicing, testing and adjustment of safety valves:

  • dismantling, cleaning, inspection of damage
  • machining of sealing surfaces, valve seat and disc (grinding, turning, lapping, surfacing if necessary)
  • sandblasting, protection from corrosion
  • assembling, including the sealing material
  • testing and adjustment of the safety valve
  • drafting of safety valve test report
  • setting the seal and valve card

The operation of pressurized security system equipment must be checked and adjusted at least once a year!

 

SAFETY VALVE REPAIR EXAMPLE

Sigurnosni ventil
Testing of the safety valve on a valve test bench

Sigurnosni ventil
SV is leaking, opening pressure is 4 bar

Oštećeno sjedište ventila
Damaged valve seat

Rastavljeni SV
Dismantled SV

Pjeskarenje dijelova SV
Sandblasting SV parts

Popravak vretena
Repair of spindle

Čišćenje opruge
Cleaning of spring

Tokarenje pladnja
Turning of plug

Obnovljeni unutarnji dijelovi SV
Refurbished SV internal parts

Opjeskareno kućište
Sandblasted housing

Brušenje sjedišta SV
Grinding of SV seat

Lepanje pladnja
Lapping of plug

Obnovljeno sjedište SV
Refurbished SV seat

Montaža dijelova SV
Assembling of SV parts

Premazivanje brtvene površine poklopca
Coating the sealing surface of the cover

Montaža kućišta SV
Mounting of SV housing

SV otvara na propisanih 6 bara
SV opens at the prescribed 6 bar

Postavljanje plombe
Setting the seal