Trias direct operated medium-low pressure gas regulator, flanged, fail open, by Pietro Fiorentini H2 Ready
Direct Operated Regulator

Trias Medium-Low Pressure Gas Regulator

A direct-operated gas pressure regulator with diaphragm control and spring action, designed for filtered non-corrosive gases in natural gas distribution networks. Classified as "Fail Open" per EN 334.

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

Fail Open
Up to 17 bar
High Accuracy

Technical Specifications

Performance
Accuracy Class (AC)Up to 5
Lock-up Pressure Class (SG)Up to 20
Downstream Pressure (Wd)12 to 4000 mbar
Inlet Pressure (bpu)0.12 to 17 bar
Construction
Design PressureUp to 17 bar
Operating Temperature-20°C to +60°C
Nominal Sizes1-1/2″, 2″
ConnectionsClass 150 RF per ASME B16.5; PN 16 per ISO 7005
Fail ModeFail Open (EN 334)

Applications

Gas Distribution LP
Gas Distribution MP
District Stations
Commercial Users
Gas Networks
Residential Users

Key Features

Diaphragm Control

Spring action for precise pressure regulation.

High Accuracy

Accuracy class up to 5 for precise control.

Configuration Options

Monitor plus slam shut (BM) and double slam shut (BB) variants.

Wide Pressure Range

Downstream from 12 to 4000 mbar.

Frequently asked questions

What are the Trias BM and BB versions?

The Trias comes in pre-defined configurations rather than add-on accessories. Trias BM adds an incorporated monitor and a slam shut that closes the gas supply within 2 seconds if both the active regulator and the monitor fail. Trias BB adds two incorporated slam shuts on one valve body, each with its own independent control mechanism.

What pressures and sizes does the Trias cover?

The Trias takes inlet from 0.12 to 17 bar and controls the outlet from 12 to 4000 mbar, in 1-1/2 and 2 inch sizes with Class 150 RF or PN 16 flanges. It is Fail Open under EN 334, has a 1:200 turndown ratio and lock-up class up to 20, per the flyer, and is compatible with 20% hydrogen blending.

Do you supply the Trias for projects in the GCC?

Yes. Pietro Fiorentini Saudi Industry in Al Khobar supplies and supports the Trias for district stations and commercial users in Saudi Arabia, the UAE, Qatar, Kuwait, Bahrain and Oman. Tell us which version you need, standard, BM or BB, and your operating conditions for a quotation.

Need More Information?

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