Dilock slam shut valve (OPSO/UPSO) for medium and low pressure gas distribution by Pietro Fiorentini H2 Ready
Slam Shut Valve

Dilock Slam Shut Valve for Quick Gas Flow Interception

The Dilock 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. Designed for medium and low-pressure gas distribution networks, it is compatible with natural gas and previously filtered non-corrosive gases. The device is Hydrogen Ready for NG-H2 blending applications.

Supplied and supported across Saudi Arabia, the GCC and the Middle East from Al Khobar

EN 14382
Up to 20 bar
Hydrogen Ready

Technical Specifications

Detailed technical data for the Dilock Slam Shut Valve

Performance
Design Pressure Up to 20 bar
Design Temperature -20°C to +60°C
Activation Automatic / Manual Remote
Response Quick Closing Action
Construction
Nominal Sizes Up to 2″
Flange Standards ANSI 150 (ASME B16.5), PN 16 (ISO 7005)
End-to-End Dimensions EN 14382
Hydrogen Compatibility 20% H2 Blending (Higher on Request)

Applications

Gas Distribution MP/LP
Residential Users
Commercial Users
Medium/Small Industry
District Stations
Power Generation
Heavy Industry
NG-H2 Blending

Key Features

Quick Closing Action

Rapidly intercepts gas flow when pressure reaches pre-set limits for immediate safety protection.

Hydrogen Ready

Compatible with NG-H2 blending for future energy transition applications.

Dual Activation Modes

Automatic pressure-triggered and manual remote activation capabilities.

Standards Compliant

End-to-end dimensions comply with EN 14382 specifications.

Versatile Connections

Available with ANSI 150 and PN 16 flange options for global compatibility.

Wide Temperature Range

Operating temperature from -20°C to +60°C for diverse climate conditions.

Frequently asked questions

Where is the Dilock slam shut valve used?

The Dilock is mainly used in medium and low pressure gas distribution networks, at district stations and for residential, commercial and small industrial users. It is rated up to 20 bar. The Dilock 108 comes in DN 25, 40 and 50 with flanged ends (threaded on DN 50), and the Dilock 507-512 in 1 inch threaded versions. It is compatible with biomethane and 20 percent hydrogen blending.

What OPSO and UPSO settings does the Dilock offer?

The over pressure shut-off (OPSO) can be set from 30 mbar to 5.5 bar, and the under pressure shut-off (UPSO) from 6 mbar to 3.5 bar. Accuracy class reaches AG 5 for OPSO and AG 10 for UPSO, depending on working conditions. The valve trips within one second, is reset by hand, and accepts limit switch and remote tripping options.

Do you supply the Dilock across the GCC?

Pietro Fiorentini Saudi Industry in Al Khobar supplies and supports the Dilock for distribution projects in Saudi Arabia, the UAE, Qatar, Kuwait, Bahrain and Oman. Send us the inlet pressure, set points and connection type for a quotation.

Need More Information?

Our technical team is ready to help you select the right safety valve for your application.