The slam shut valve Dilock by Pietro Fiorentini is a safety device which quickly intercepts gas flow when the controlled pressure reaches a pre-set limit due to any anomaly in the system, or when required by the operator at the installation point or from a remote point.

Strongly recommended for medium and low pressure gas distribution networks, this device can be used with natural gas and previously filtered non-corrosive gases.

Dilock is Hydrogen Ready for NG-H2 blending.


  • Design pressure: up to 20 bar
  • Design temperature: from -20 °C to +60 °C
  • Sizes DN: up to 2″
  • Flanges: ANSI 150 according to ASME B16.5 and PN 16 according to EN 1092
  • End to end dimensions: according to EN 334, EN 14382
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