The PROTEGO® V/SV is a precision-engineered vacuum relief valve designed to protect tanks, vessels, and equipment from vacuum conditions. Engineered with “full lift type” technology, it opens at just 10% underpressure and achieves full lift quickly, ensuring efficient protection and high flow performance. Its design minimizes air ingress, product loss, and environmental impact, while offering extremely tight sealing. Ideal for applications handling flammable, sticky, or corrosive media, this valve ensures safe venting under vacuum while maintaining a tight seal after operation.
40–300
–2.0 to –60 mbar
Tight seal, minimal emissions
DN 40 to DN 300
Full lift at <10% overpressure
Standard: V/SV With heating jacket: V/SV-H
Up to +60 °C (higher on request)
–2.0 to –60 mbar (–0.8 to –24 in. W.C.)
10% technology – extremely low leakage
EN 1092-1, Form B1 ASME B16.5, Class 150 R.F.
Suitable for hazardous zones
Used to relieve vacuum in:
Storage tanks
Processing vessels
Chemical and petrochemical facilities
Food and beverage processing
Tank farms and solvent storage
Air/vapor mixtures
Hydrocarbons
Corrosive or sticky media
Solvents and alcohols
Ultra-tight valve seat with stainless steel
Optional PTFE and FEP seals for corrosive/sticky media
Available with heating jacket to avoid freezing
Prevents inbreathing of external air
Self-draining, low-maintenance design
Heating Jacket Model: V/SV-H
Seal Options:
FEP
PTFE
Metal-to-metal
Valve Pallet Material:
Aluminum or stainless steel
Special Coatings: ECTFE housing coating on request
Custom vacuum settings: Available upon consultation
Cover Options: Aluminum, steel, or stainless steel
Spring-loaded version: For higher vacuum protection
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.
