The PROTEGO® ER/V is a highly developed emergency pressure relief valve engineered for high flow capacity to protect storage tanks, silos, and process vessels from critical overpressure. This valve is specifically designed to open instantly upon reaching the set pressure, requiring only 10% overpressure to achieve full lift. Its superior sealing, durable construction, and TÜV-certified performance make it ideal for API tanks and explosion-hazard zones where large volume discharge is necessary in emergency scenarios.
200–700
+5 to +40 mbar
at 10% overpressure
200 to 700
Suitable for use in hazardous environments
DN 200–350: +5 to +40 mbar (+2 to +16 in. W.C.)
DN 400–700: +5 to +25 mbar (+2 to +10 in. W.C.)
Stainless steel valve seat with O-ring Precisely lapped pallet
Full lift at 10% overpressure
Robust and safely secured housing cover
EN 1092-1 Form B1
ASME B16.5 Class 150 R.F.
Depending on material selection and application
Emergency venting for storage tanks
Chemical and petrochemical industries
API tanks and atmospheric vessels
Industrial process containers
Explosion-prone environments
Air and inert gases
Hydrocarbon vapors
Flammable and corrosive vapors
Biogas and process emissions
High discharge capacity
Pressure maintained until activation
Extremely tight sealing reduces vapor loss
Reliable reseating after emergency relief
Engineered for sudden overpressure scenarios
High-pressure design variant: ER/VH
Spring-loaded variant: ER/V-F
Custom materials upon request
Flow direction indicator
Lifting eyelets for safe handling
Special surface coatings
From forging and casting to machining, assembly, and testing — every step is managed under one roof to ensure consistent quality, faster lead times, and zero compromise.
Get in touch with our team for additional information on product pricing, technical data, project support and more.
