TT-VA72W Vacuum Relief Valve for Negative-Pressure Protection

THINKTANK TT-VA72W is a vacuum relief valve designed to protect vessels and piping systems against excessive negative pressure by automatically admitting air when the preset vacuum limit is reached. Listed Size Range: DN15–DN250 Connection: Flanged Function: Vacuum / negative-pressure protection Operating Principle: Automatic air admission under excessive vacuum Typical Equipment: Absorption towers, distillation columns, storage tanks and vessels Typical Scenario: Vacuum generated after steam purging or steam cleaning due to vapor condensation