Introducing Dilock PIETRO FIORENTINI Vietnam

Pietro Fiorentini's Dilock Quick-Close Valve   is a safety device that quickly blocks the flow of gas when the controlled pressure reaches a preset limit due to any abnormality in the system or when required by the operator at the point installed or from a remote point.

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


  • Design pressure: up to 20 bar
  • Design temperature: from -20 °C to +60 °C
  • Size DN: up to 2"
  • Flange: ANSI 150 according to ASME B16.5 and PN 16 according to EN 1092
  • Dimensions from end to end: according to EN 334, EN 14382

Technical specifications of Dilock PIETRO FIORENTINI Vietnam

Design pressure* (PS1
) up to 2.0 MPa
up to 20 barg
Ambient temperature* (TS¹) from -20 °C to +60 °C
from -4 °F to +140 °F
Inlet gas temperature* from -20 °C to +60 °C
from -4 °F to +140 °F
Available Accessories Limit switch, remote tripping
Accuracy class (AG¹) up to 5 for OPSO (depending on working conditions)
up to 10 for UPSO (depending on working conditions)
Over pressure setting range
from 3 kPa to 0.55 MPa
from 30 mbarg to 5.5 barg
Under pressure setting range
from 0.6 kPa to 0.35 MPa
from 6 mbarg to 3.5 barg
Nominal size (DN1)

• Dilock 108: DN 25 | 1”; DN 40 | 1”1/2; DN 50 | 2”
• Dilock 507-512: DN 25x40 | 1”x1”1/2; DN 25x25 | 1”x1”
• Dilock 108: Class 150 RF according to ASME B16.5; PN16 according to ISO
7005; Threated Rp according to EN10226 or NPT according to ASME B1.20.1
(only for DN 50 | 2”)
• Dilock 507-512: Threated Rp according to EN10226 or NPT according to
ASME B1.20.1
End to end dimensions EN 14382

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