Terval/A pilot operated gas regulator with monitor and slam shut on one body by Pietro Fiorentini H2 Ready
Pilot Operated Regulator

Terval/A Medium-Low Pressure Gas Regulator

A pilot-operated gas pressure regulator designed for previously filtered non-corrosive gases, primarily used in medium and low-pressure 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 25 bar
Compact Design

Technical Specifications

Performance
Accuracy Class (AC)Up to 5 | up to 1% absolute
Lock-up Pressure Class (SG)Up to 10
Inlet Pressure (bpu)0.5 to 25 bar
Outlet Pressure (Wd)0.005 to 9.5 bar (depends on pilot)
Min. Differential Pressure0.45 bar
Construction
Design PressureUp to 25 bar
Operating Temperature-20°C to +60°C (higher/lower on request)
Nominal Sizes2″, 2½″, 3″, 4″
ConnectionsClass 150 RF or RTJ per ASME B16.5; PN 25 and 40 per ISO 7005
Fail ModeFail Open (EN 334)

Applications

Gas Distribution MP
Gas Distribution LP
District Stations
Commercial Users
Gas Networks
Medium/Small Industry

Key Features

Pilot Operated

Adjustable outlet pressure through pilot operation.

Compact Construction

Available in multiple sizes for various installations.

Optional Silencer

Available with silencer configuration.

Wide Operating Range

Suitable for wide pressure and temperature ranges.

Frequently asked questions

What makes the Terval/A different from a standard pilot regulator?

The Terval/A combines three functions in one body: the active regulator, an emergency PM/182 monitor and an SA slam shut, and it can also carry a DB silencer. This keeps district station layouts compact. It is Fail Open under EN 334, with inlet from 0.5 to 25 bar, outlet from 5 mbar to 9.5 bar and sizes from 2 to 4 inches.

Should I choose the Terval/A or the Terval/R?

Choose by fail mode and outlet range. The Terval/A is Fail Open, with outlet up to 9.5 bar and a minimum differential pressure of 0.45 bar. The Terval/R is Fail Close, with outlet from 8 mbar to 12 bar, and works from 0.1 bar differential. Both take inlet up to 25 bar, sizes 2 to 4 inches and 10% hydrogen blending, per their flyers.

Do you supply the Terval/A across Saudi Arabia and the GCC?

Yes. Pietro Fiorentini Saudi Industry in Al Khobar supplies and supports the Terval/A for district stations in Saudi Arabia, the UAE, Qatar, Kuwait, Bahrain and Oman. Send us your inlet and outlet pressures, flow and the monitor and slam shut settings you need, and we will prepare a quotation.

Need More Information?

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