MAG-3/DN65 Ex

Device group: Shut-off valves
Device type: MAG-3

MAG-3 is a swing valve in the Active Gas Safety System GX which automatically cuts off the gas supply and eliminates the risk of explosion of natural gas or propane-butane.

MAG-3 BIO versions are designed to work with landfill biogas or sewage treatment plants.

Area of application

  • in systems protecting gas installations: in gas boiler rooms, public buildings, etc;
  • external gas reduction and measurement points (working pressure up to 0.5 MPa);
  • cogeneration systems in sewage treatment plants or landfill sites (MAG-3 BIO models).


  • both open and closed positions do not require power supply – they are energy efficient (an electrical pulse of 12VDC with a duration of < 1s is only needed to close the valve);
  • insensitive to system supply voltage loss – its absence or momentary disappearance does not cause changes in gas flow through the valve;
  • resistant to any disturbances that may cause its accidental opening when closed (only conscious action by supervisors);
  • low force required to open the valve;
  • simple, cost-effective, reliable and lightweight design;
  • long life;
  • can be used in explosive atmospheres in accordance with the ATEX Directive;
  • optionally equipped with a valve closure sensor – symbol MAG-3w.

Block diagram

Device model: MAG-3/DN65

Technical parameters

Valve diameter
Nominal pressure
0.5 MPa
Connection diameter
Direction of gas flow
direction according to the arrow on the housing
Opening / closing the valve
opening only by hand; closing with an electrical pulse (12VDC) or triggered with a button
Standard equipment
opening wrench, two steel counter flanges, gaskets, set of bolts, washers and nuts
Ability to work in the EX zone
325 x 257 x 270 mm
EAN Code
Net price
PLN2,599.00 S


Series Technical data Device information sheet Instruction manual Declaration of conformity
05/2018 Download file Download file Download file