PRESSURE-UNDERPRESSURE
SECURITY VALVE (VPD)
Security valve that avoids accidental deformations in silos or hoppers caused by an overpressure or underpressure caused for example by a sudden breaking of an internal arch of product.
Technical data sheet 
Download data sheet
Download data sheet
- Ø diameter: 273 mm
- Range for the spring’s setting:
Underpressure: -20 till -120 mm H2O
Overpressure: +280 till 1.000 mm H2O
- · Construction material
- St-37, Aisi-304, Aisi-316
ATEX cert.: II 3G/D (Zone 22)