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Electrically controlled, intrinsically safe directional control valves are intended to regulate the direction of hydraulic fluid (oil) flow in hydraulic systems which require to be powered with intrinsically safe circuits, unable to cause an ignition in an environment with potentially explosive atmosphere for group I or II, by creating a spark or thermal effect. To provide a distinction from the standard hydraulic equipment, the “I” letter, preceding the product type was introduced.

The valves are ATEX certified for intrinsically safe applications and can be used with an intrinsically safe circuit “ia” or “ib” of a power pack unit, suitable for the proper explosion group of a gas (max. parameters: Ui = 15 V, Ii = 1,6 A). For some of the elements (for the II group of equipment), the intrinsically safe power unit should have a power limit Pi, in compliance with the technical pecification table.

The intrinsically safe valves are intended (among other applications), for hydraulic systems which require to be powered withintrinsically safe circuits:

  • in underground part of mines and in some of their installations at the surface (certificate I M1 Ex ia I Ma), exposed to methane and/or coal dust explosion
  • in equipment and devices working near the flammable materials, such as: gases, vapours, mists, in compliance to the proper list mentioned in the ATEX standard specification (certificates II 2G Ex ia IIB T4 Gb or II 2G Ex ia IIC T6/T5 Gb)
Typ Beschreibung Nenngröße Betriebsdruck
(MPa)
Volumenstrom
(dm3/min)
Datenblatt Details
intrinsically safe (ATEX) directional control valves for subplate mounting (IWE6) IWE6

intrinsically safe (ATEX) directional control valves for subplate mounting

6 bis 31,5 bis 20 WK 499 775 Details
intrinsically safe (ATEX) directional control valves for subplate mounting – special version (IWE6-SO495) IWE6-SO495

intrinsically safe (ATEX) directional control valves for subplate mounting – special version

6 bis 31,5 bis 20 WK 499 775 Details
2-way intrinsically safe (ATEX), cartridge directional control valves (2IRED6) 2IRED6

2-way intrinsically safe (ATEX), cartridge directional control valves

6 bis 31,5 bis 20 WK 499 424 Details
2-way, unilateral, cartridge intrinsically safe (ATEX) valves (2IRES) 2IRES

2-way, unilateral, cartridge intrinsically safe (ATEX) valves

6 bis 31,5 bis 30 WK 499 425 Details
10 bis 31,5 bis 60 WK 425 280 Details
3-way intrinsically safe (ATEX) directional control valves (3IREH2) 3IREH2

3-way intrinsically safe (ATEX) directional control valves

2 bis 31,5 bis 1,3 WK 499 415 Details
3-way intrinsically safe (ATEX) cartridge directional control valves (3IREH6) 3IREH6

3-way intrinsically safe (ATEX) cartridge directional control valves

6 bis 31,5 bis 20 WK 499 296 Details
intrinsically safe (ATEX), electrically controlled, proportional pressure reducing/relief cartridge valves (IWZCDE4) IWZCDE4

intrinsically safe (ATEX), electrically controlled, proportional pressure reducing/relief cartridge valves

4 bis 21 bis 3 WK 423 580 Details
Intrinsically safe (ATEX) pressure relief valves (IWZP(P, S, G)E10) IWZP(P, S, G)E10

Intrinsically safe (ATEX) pressure relief valves

10 do 30 do 200 WK 425 640 (En) Details