PVS 803


PVS 803 is the pilot-operated relief valve by Pietro Fiorentini in which the opening and the closing of the main plug is controlled by a pilot device which is very sensitive to the variations of the in-line pressures.

Mainly used in high-pressure transmission systems and in medium pressure gas distribution networks, this device can be used with natural gas and previously treated, non corrosive gaseous fluids.


  • Design pressure: up to 102 bar
  • Design temperature: from -20 °C to +60 °C
  • Rangeability: 200:1
  • Nominal sizes DN: up to 6″
  • Connections: ANSI 150, 300 and 600 according to ASME B16.5 and PN 16 according EN 1092
  • End to end dimensions: according to EN 334, EN 14382
Scroll to top
Please turn to portrait for a better experience

Please turn to portrait
for a better experience