The PROTEGO® VD/SV is a highly engineered pressure and vacuum relief valve that ensures optimum protection of storage tanks and process vessels from excessive overpressure or vacuum. Designed with “full lift type” technology, it ensures extremely tight sealing up to the set pressure and vacuum, reducing emissions and product loss. The valve opens with just 10% overpressure, offering a high flow capacity while maintaining stable pallet operation. Its stainless steel construction, corrosion-resistant seals, and optimized flow dynamics make it ideal for demanding environments.
40–300
+2.0 to +60 mbar
–2.0 to –60 mbar
DN 40 to DN 300
+2.0 to +60 mbar (0.8 to 24 in. W.C.)
Suitable for use in hazardous zones
EN 1092-1, Form B1 ASME B16.5 Class 150 R.F.
–2.0 to –60 mbar (0.8 to 24 in. W.C.)
10% technology; extremely low leakage
Up to +60 °C (higher on request)
Atmospheric and low-pressure storage tanks
Chemical and petrochemical processing
Tank farms and distribution terminals
Vessels requiring minimal product loss and high flow relief
Facilities with environmental emission compliance standards
Hydrocarbons
Solvents
Alcohols
Inert gases
Air/vapor mixtures in hazardous environments
Full lift opening with 10% overpressure
Superior sealing for minimal vapor loss
Resistant to sticky and corrosive media
Stable pallet operation under varying flow conditions
Optional heating jacket available for low-temp media
Heating Jacket Version: VD/SV-H
Valve Pallet Options:
Aluminum or stainless steel
FEP, PTFE, metal-to-metal sealing
Custom Pressure/Vacuum Settings
Special Coatings: ECTFE for aggressive media
Condensate Drain Feature
Weather Hoods: Stainless steel, corrosion-resistant
Spring-Loaded Design for Higher Pressures (on request)
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.
