Pressure-Vacuum Valves
Safety · 23 models
Gases / Liquids
Model 100 Top-mounted, end-of-line, weight-loaded pressure and vacuum relief valve
Model 101 Top-mounted, end-of-line, spring-operated vacuum relief valve
Model 120 Top-mounted, ventless, weight-loaded vacuum relief valve
Model 121 Top-mounted, ventless, spring-operated pressure and vacuum relief valve
Model 141 Top-mounted, ventless, weight-loaded pressure relief valve
Model 142 Top-mounted, removable, spring-operated pressure relief valve
Model 140 Válvula de alivio de presión Fin de línea, con carga de peso
Model 143 End-of-line, spring-operated pressure relief valve
Model 190 End-of-line, weight-loaded vacuum relief valve
Model 193 End-of-line, spring-operated vacuum relief valve
Model 102 Vacuum relief valve with flame arrester
Test bench
Pressure relief valve for LPG and NH3
High-velocity vacuum and pressure relief valve
ADR pressure and vacuum relief valve
Solids
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Pressure and vacuum relief valves (PVRV or breather valves) protect atmospheric and low-pressure storage tanks against the overpressure and vacuum generated during filling, emptying and ambient temperature changes. They open the pressure path when the tank exceeds its set point and the vacuum path when it drops below, preventing deformation, collapse or rupture of the vessel while also reducing product losses through evaporation and emissions. At Tecnovent we supply pressure-vacuum valves vented to atmosphere or piped away, with integrated flame arrester and in various materials, compliant with API 2000 and ISO 28300. We help you calculate breathing flow rates and select the right setting for your tank.