The SAFE-ISO is a non-return valve designed to prevent overpressure or flame caused by a downstream explosion (dust collectors, filters, cyclones...) to propagate in the piping system.
It can be used both at the entrance and at the exit of the filter.
This allows for isolating the filter from an explosion or an overpressure. In case of explosion, the valve closes and remains locked preventing the progress of the flame.
The unlocking of the flap is done manually.
The valve is held open by a spring blade. When installing the valve horizontally, it can be supported on the bracket, on the bottom.
Non dust accumulation design
The alignment of the lower part of the SAFE-ISO with the piping, allows the air flow to create a continuous self-cleaning, with low pressure drop.
Allows for backflow
If necessary, the valve allows for air to pass through in the opposite direction, of the intended direction. This is due to the internal spring blade system, holding the flap.
This spring blade allows for vertical mounting of the valve, making it more versatile.
Even though the flap is held open by the spring blade, the flap will still close, in case of explosions, since the resistance of the spring blade, is reactive to the sudden pressure increase.
Standard characteristics
Body: Painted steel
Flap: Round domed flap: Stainless steel
EPDM FDA Gasket: -30 oC to +70 oC
Flanges: ISO and ANSI flanges design
Inductive sensor: Non ATEX closing indication sensors in case of explosion or overpressure
Certifications and compliances:
INERIS 19ATEX0016 X
EN 16447
EN 15089
NFPA 69
Air flow specifications:
Clean air side: ? 30 m/s
Dirty air side: ? 45 m/s
Working pressure limit: 500 mbar
Working Vacuum limit: -80 mbar
Explosion specifications:
Kst max: ? 250 bar m/s
Kst min: none
P,max: 10 bar
MIE: ? 10 mJ
MIT: ? 400 C
MESG : 1.7 mm
Pred max: ? 0.5 bar
SAFE-ISO resistance: 2.0 bar
Atex marker: ll D
Atex inside: Zone 20 (ll 1D)
Dust: all kinds
Dust concentration: No limit
Blue vent Group can supply a wide range of safety components, please enquire at contactblue-vent or visit .blue-vent
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