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Home >> Control Valve >> Self-Operated Regulator >> Excess Pressure Valve >> ARI-PREDEX Direct acting proportional self-operated excess pressure regulator
  • ARI-PREDEX Direct acting proportional self-operated excess pressure regulator
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  • ARI-PREDEX Direct acting proportional self-operated excess pressure regulator



    ŸCompact design

    ŸConstruction without pillars

    ŸExact and easy adjustment

    ŸDiameter independent ranges

    ŸSimple change of spring and actuator

    Ÿ5 exchangeable actuator sizes

    Ÿ3 exchangeable spring sizes

    ŸPressure balanced by stainless steel bellow

    ŸSpindle sealing via stainless steel bellow

    ŸSecondary stem sealing(optional)

    ŸTapered seat ring

    ŸScrewed seat ring

    ŸKVS-values reduce able

    ŸFlow divider for noise reduction(optional)

    ŸPlug with PTFE soft sealing(optional)


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Description



ŸCompact design

ŸConstruction without pillars

ŸExact and easy adjustment

ŸDiameter independent ranges

ŸSimple change of spring and actuator

Ÿ5 exchangeable actuator sizes

Ÿ3 exchangeable spring sizes

ŸPressure balanced by stainless steel bellow

ŸSpindle sealing via stainless steel bellow

ŸSecondary stem sealing(optional)

ŸTapered seat ring

ŸScrewed seat ring

ŸKVS-values reduce able

ŸFlow divider for noise reduction(optional)

ŸPlug with PTFE soft sealing(optional)


ARI-PREDEX Excess pressure regulator is a self operated, direct acting proportional regulator, which regulates the upstream pressure.Equipped with UDA rolling diaphragm pneumatic actuator, suitable for neutral liquid, steam, hot water and other media.

Main Parameters
Nominal diameter: DN15 – 150
Nominal pressure: PN16-40
Valve material: EN-JL1040,EN-JS1049,1.0619+N
Connection: Flange
Fluid medium: Neutral Liquids, Steam and Hot Water

Model Category


ARI-PREDEX Direct acting proportional self-operated excess pressure regulator
1)The excess pressure regulator is a self operated, direct acting proportional regulator, which regulates the upstream pressure.
2)The upstream pressure (p1) is regulated, this means, the valve opens when the upstream pressure rises over an adjusted set point. If the upstream pressure decreases under the adjusted set point, the valve closes automatically. Because of the stainless steel bellows, the downstream pressure (p2) has no influence.
3)Operating fields are to regulate fluids of the group II acc. to Pressure Equipment Directive 2014/68/EU, e.g. steam, neutral gases, vapours and liquids. With steam and liquids, having temperatures higher than the allowable working temperatures a water seal pot must be installed in the control line (to protect actuator diaphragm).

Picture Show
PREDEX Installation in the control line can be seen in the system drawing
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TEL : 0086-411-39977558

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