Pressure and Vacuum Relief Valve DV/ZU

The DV/ZU is a high-performance, in-line pressure and vacuum relief valve designed for tanks and process equipment to prevent overpressure and vacuum, featuring separate flange connections and a 'full lift' technology (achieving full capacity at 10% overpressure) to minimize emissions. It is typically used in hazardous areas to safely vent vapours via a pipe. A Pressure and Vacuum Relief Valve — often abbreviated PVRV and in German markets called Druck- und Vakuumventil (DV/ZU) — is a safety device installed on tanks, vessels, and storage systems to: ✅ Limit internal pressure so the tank isn’t over-pressurized ✅ Limit internal vacuum to prevent tank collapse ✅ Maintain a controlled breathing of the closed system ✅ Protect against loss of product and environmental emissions Use these keywords in: ✔ Tank Breather Valve ✔ Overpressure / Underpressure Vent Valve ✔ Conservation Vent ✔ API 2000 Vent Valve ✔ Vacuum Protection Valve ✔ Explosion-proof tank vent ✔ Flame Arrester + DV/ZU combo