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    Gas products
    High - medium pressure gas regulators
    Pilot operated

    Aperflux 851

    Description

    Aperflux 851 is one of the pilot-operated gas pressure regulators by Pietro Fiorentini.

    This device is suitable for use with previously filtered non-corrosive gases, and it is mainly used for high-pressure transmission systems and for medium pressure natural gas distribution networks.

    According to the European Standard EN 334, it is classified as Fail Open.

    Aperflux 851 is Hydrogen Ready for NG-H2 blending.

    Features

    • Accuracy class AC: up to 2.5
    • Nominal sizes DN: 1″, 2″, 3″, 4″, 6″, 8″, 10″
    • Lock-up pressure class SG: up to 10
    • Design pressure: up to 102 bar
    • Design temperature: from -20 °C to +60 °C (higher or lower temperatures on demand)
    • Connections: class 150, 300, 600 RF or RTJ according to ASME B16.5 or PN 16, 25, 40 according to ISO 7005
    • Minimum differential pressure: 0.5 bar, recommended > 2 bar
    • Range of downstream pressure Wd: from 0.8 to 74 bar, depending on the installed pilot
    • Inlet pressure range bpu: from 1.3 to 85 bar

    Do you still have questions?

    Flyer

    Click to download the file

    Technical Manual

    Click to download the file

    Poster

    Click to download the file

    Technical brochure

    Click to download the file

    Hydrogen compatibility declaration

    Click to download the file

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    29Jul

    ISO 50001: Rosate and Desenzano del Garda plants are certified, and Arcugnano is confirmed

    A new important result for Pietro Fiorentini: we have confirmed the ISO 50001:2018 certification for the headquarters in Arcugnano (Vicenza, Italy) and we have obtained it also for the plants of Rosate (Milan, Italy) and Desenzano del Garda (Brescia, Italy). This standard specifies the requirements for an energy management system to enable companies to achieve continual improvement of energy performance. Thanks to our […]