The pressure relief valve is a mechanical safety device that is automatically triggered when irregular pressure conditions occur inside the silo. The valve is made of 4 elements: protection cap, overpressure disc, depression disc and 3 adjustment springs. If the setting remains within the limits, the three springs will keep the two discs hermetically closed. On the contrary, when there is a pressure increase inside the silo, the overpressure disc lifts up to let out the air in excess; when the pressure decreases, the depression disc opens, allowing the external air to enter and reset the initial pressure inside the silo.

Code Description Ø A B Kg
BSVCP2731D pressure relief valve 273 382 125 6.5
TECHNICAL FEATURES
FACTORY SETTING -50 mm H2O / 500 mm H2O
NEGATIVE OPERATING PRESSURE -0.005 bar / +0.05 bar
AIR CAPACITY up to 7.000 m³/h
BODY DIAMETER 273 mm
PROTECTION CAP MATERIAL stainless steel
VALVE BODY painted carbon steel

WELD-ON FLANGE

The safety valve is mounted on the silo using a flanged fitting, to be welded on the silo itself.

Code Description
BSRV2731D sealing flange