The PROTEGO® VD/TS is a pressure and vacuum relief valve integrated with a deflagration-proof flame arrester, designed for installation on storage tanks and process vessels. It protects against both overpressure and vacuum while preventing flame transmission from the atmosphere into the tank. The design ensures extremely low leakage, minimizing product loss and emissions. Suitable for flammable vapors in explosion group IIA to IIB3, the VD/TS combines safety, performance, and compliance in one compact unit.
+3.5 to +50 mbar
up to 1.6 bar
–2.0 to –25 mbar
DN 50 to DN 300
+3.5 to +50 mbar (1.4 to 20 in. W.C.)
Up to +60 °C / 140 °F (higher on request)
Extremely tight sealing (10% technology)
–2.0 to –25 mbar (0.8 to 10 in. W.C.)
IIA to IIB3 (NEC Group D to C; MESG ≥ 0.65 mm)
Pressure/vacuum relief valve with integrated flame arrester
ATEX EN ISO 16852 ISO 28300 (API 2000) EN 14015
Installed on atmospheric storage tanks, process vessels, or containers where pressure/vacuum protection and flame arresting are both required. Commonly used in:
Chemical and petrochemical industries
Tank farms and terminals
Refineries and alcohol storage systems
Paints, coatings, and solvent tanks
For flammable vapors and air/vapor mixtures in:
Hydrocarbons
Alcohols
Solvents
Any explosion group IIA – IIB3 media
Combines pressure/vacuum relief and flame arresting
Minimizes emissions through ultra-tight sealing
Handles atmospheric deflagration scenarios
Prevents flame flashback into tanks
High flow capacity, low pressure drop
Valve pallet options:
Metal-to-metal
Soft-seal (FEP, PTFE)
Housing materials:
Carbon Steel
Stainless Steel
Aluminum
Flame arrester material options (e.g., SS, Hastelloy)
Custom pressure/vacuum set points
Higher temperature versions available 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.
