Intrinsic safety valves can be used for applications that require similar explosion class/ignition degree to d2G4 or Exd II BT5 type (explosion-proof enclosure construction). Without need for expensive connection tools and complex installation work that are inevitable for explosion-proof enclosure types, the intrinsic safety valves achieve highly reliable explosion-proof performance.
Return Hold Kind of barrier to combine ｉ２Ｇ４ MTL728+
454S202C-Ｙｉ 454S203C-Ｙｉ 454S403C-Ｙｉ 454S404C-Ｙｉ 454D202C-Ｙｉ
454D203C-Ｙｉ 454D403C-Ｙｉ 454D404C-Ｙｉ
EｘｉａⅡBT5 SAF3-5
454S202M-Ｙｉ 454S203M-Ｙｉ 454S403M-Ｙｉ 454S404M-Ｙｉ 454D202M-Ｙｉ
454D203M-Ｙｉ 454D403M-Ｙｉ 454D404M-Ｙｉ
In the case of other explosion-proof barriers and combination *1
Structure of the main valve Pilot spool type
Port size
Rc1/4 Rc3/8 Rc1/2 Rc1/4 Rc3/8 Rc1/2
Effective area of valve 22mm2 40mm 22mm 40mm2
Working pressure 0.2～0.7MPa
Ambient temp. -5～50℃
Explosion-proof standard Intrinsic safety construction
Operating condition
Use with specified safety barrier
For i2G4 explosion-proof valves, use them with MTL728+ safety barrier.
For Exia II BT5 explosion-proof valves, use them with the safety barrier SAF3-5 or that meets the
conditions described below (note *1).
2. Parts and connections cannot be changed.
3. Use 1 explosion-proof barrier for each solenoid valve.
