PLENUM, FLEXIBLE HOSES AND ACCESSORIES FOR DUCTS
Metal non-return valve
The non-return valve for circular ducts prevents reversal of the air flow in the ventilation ducts.
The butterfly valve opens when overpressure occurs in the duct.
By means of a dedicated spring the butterfly will return to the closed position once the pressure has been lowered.
Features
- Made of metal
- Valve body made of galvanized steel
- Butterfly valve
Models
Cod.: 11161820
METAL NON-RETURN VALVE Ø 100 mm
- MEASUREMENT 100
- Ø D [mm] 99
- L [mm] 88
Cod.: 11161821
METAL NON-RETURN VALVE Ø 125 mm
- MEASUREMENT 125
- Ø D [mm] 124
- L [mm] 88
Cod.: 11161822
METAL NON-RETURN VALVE Ø 150 mm
- MEASUREMENT 150
- Ø D [mm] 149
- L [mm] 88
Cod.: 11161823
METAL NON-RETURN VALVE Ø 160 mm
- MEASUREMENT 160
- Ø D [mm] 159
- L [mm] 88
Cod.: 11161824
METAL NON-RETURN VALVE Ø 200 mm
- MEASUREMENT 200
- Ø D [mm] 199
- L [mm] 88
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