DUNGS (ATEX) 245810_GGW3A4_2X (1)

DUNGS (ATEX) Pressure Switches GW….HP X and GGW … X

FLOTEQ HY SERIES

DUNGS ATEX pressure switches are used for switching circuits when the pressure deviates from the set value, with the nominal switching point adjusted by means of a setting wheel with scale.

  • Operating principle: Mechanical via spring + bellows/membrane → no auxiliary power required.

  • Switching function:

    • Increasing pressure → NC opens, NO closes.

    • Decreasing pressure → NC closes, NO opens.

GW…A4 HP/2 X (High-Pressure Switch, Overpressure)
Function:Overpressure switch.
Design:Metal bellows + spring.
Materials:Stainless steel 1.4541 → resistant to aggressive media.
Applications:Gas, air, flue/exhaust gases, biogas, sulfuric acid (≤1.0 vol.%).
Connection:(Not specified here, but typically G ¼).
GGW…A4/2 X (Differential Pressure Switch, Overpressure side)
Function:Differential pressure (positive pressure p2 > atmosphere).
Design:Membrane + spring.
Connection:G ¼ → pressure inlet.
G ⅛ must not be closed.
Application:Reacts on overpressure → switches circuit when nominal value reached.
GGW…A4-U/2 X (Differential Pressure Switch, Negative Pressure side)
Function:Differential pressure (negative pressure p2 < atmosphere).
Design:Membrane + spring.
Connection:G ⅛ → pressure inlet.
G ¼ must not be closed.
Application:Reacts on underpressure → switches circuit when nominal value reached.

* * For other configuration, spare-part or products details, please consult JATI

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