H2 Ready
Aperflux 851 High-Medium Pressure Gas Regulator
The Aperflux 851 is a pilot-operated gas pressure regulator designed for filtered non-corrosive gases. It serves high-pressure transmission systems and medium-pressure natural gas distribution networks. The device is "Fail Open" per EN 334 and is hydrogen-ready for NG-H2 blending applications.
Supplied and supported across Saudi Arabia, the GCC and the Middle East from Al Khobar
Technical Specifications
Detailed technical data for the Aperflux 851
Applications
Key Features
Hydrogen Ready
Compatible with NG-H2 blending for future energy transition applications.
Wide Size Range
Available in sizes from 1" to 10" for diverse application requirements.
Configuration Options
Available with silencer, slam shut, and monitor configurations.
Global Standards
Connections per ASME B16.5 and ISO 7005 standards.
High Pressure Capability
Design pressure up to 102 bar for demanding applications.
Fail Open Design
EN 334 certified fail-safe operation for critical applications.
Downloads
Technical documentation and resources
Frequently asked questions
Which options are available for the Aperflux 851?
The Aperflux 851 accepts the DB/851 silencer, the SB/82 or HB/97 slam shut valve, the PM/819 monitor and an opening indicator. Its modular design lets you retrofit the silencer to a standard unit, or to one with slam shut or monitor, without changing the main piping. An incorporated monitor or the built-in silencer each lowers the Cg by about 5%.
Is the Aperflux 851 hydrogen ready?
Yes. The Aperflux 851 is hydrogen ready for NG-H2 blending. Its flyer states compatibility with biomethane and 20% hydrogen blending, with higher blending available on request. It is designed to EN 334 and classified fail open, with design pressure up to 102 bar, 1.3 to 85 bar inlet and sizes from 1 to 10 inch.
Can I get the Aperflux 851 for a project in the Gulf?
Pietro Fiorentini Saudi Industry in Al Khobar supplies and supports the Aperflux 851 across Saudi Arabia, the UAE, Qatar, Kuwait, Bahrain and Oman. Share your operating conditions and connection standard (ASME B16.5 class or ISO 7005 PN) and we will quote.
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Our technical team is ready to help you select the right regulator for your application.