Dungs GW 500 A4/2 HP X-Au-M-V0 st-se 1P - ATEX Pressure Switch

DungsSKU: PHP0012

Sale price£281.29



Dungs Part Number: 251984

Special Order Item - 6- 8 Week Lead Time


Dungs Overpressure switch. 

The pressure acts on the micro switch via the metal bellows against the force of the adjusting spring. The pressure switch works without auxiliary power.

All gas-bearing parts are made of stainless steel 1.4541 and are suitable for: 

- Biogas applications

- Aggressive media such as sulfuric acid with concentrations up to 1.0 vol. %

Adjustment Range: 100 - 500 mbar

Switching Difference: ≤ 30


ATEX Group: II

ATEX Category: 3

Atmosphere: Gas (G) and Dust (D)

Maximum surface temperature: +75 °C

Max. Operating Pressure: 

GW 500 A4 HP X

pmax = 2 bar (Gas) @ setting range 0,1-0,15 bar

pmax = 5 bar (Gas) @ setting range 0,15-0,5 bar

Pressure Connection: 

p+: in the centre of the underside of the housing

G ¼-female thread as per ISO 228:

Gas or air

Electrical Connections: screw type terminals via cable entry ATEX M20x1.5

IP Rating: IP65 (IEC529, EN 60529)


ATEX Dungs GW500 A4/2 HP


Mounting Orientation

Dungs Mounting GW500 A4/2 Standard Standard Mounting Position
Dungs Mounting GW500 A4/2 horizontal

The pressure switch is activated at a higher pressure when mounted horizontally:

GW 500 A4/2 HP X approx. + 10 mbar

 Dungs ATEX GW500 A4/2 horizontal overhead

The pressure switch is activated at a lower pressure if mounted horizontally overhead:

GW 500 A4/2 HP X approx. - 10 mbar

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