High-Performance Vacuum Pressure Safety Vent Valve – For Storage Tanks and Tank Trucks
In oil storage and transportation, maintaining safe tank pressure is crucial for both safety and efficiency. The HYVV Series Vacuum Pressure Vent Valves are specially designed for gas stations, oil depots, and tanker trucks. They automatically adjust valve opening and closing when the internal tank pressure exceeds safe limits or reaches a vacuum, keeping pressure balanced, preventing tank damage, and reducing oil vapor loss. These valves are typically installed at the top of the tank vent pipe at a recommended height of approximately 4.5 meters to ensure tightness under normal operating conditions.
This series of products is known by multiple names worldwide: in English, it is called Vacuum Pressure Vent Valve, Tank Pressure Relief Valve, or Pressure-Vacuum Safety Valve; in French, Soupape de ventilation sous vide et pression; in German, Vakuum-Druck-Entlüftungsventil; in Spanish, Válvula de alivio de presión y vacío; in Italian, Valvola di sfiato a pressione e vuoto; in some Asian markets, it is referred to as Explosion-Proof Tank Vent Valve or Vacuum Pressure Safety Valve. Regardless of name, the core function is consistent: providing stable tank pressure management and reliable safety protection.
The HYVV Series features a high-strength aluminum body, combined with an acetal poppet, brass mesh screen, stainless steel spring, and zinc-plated screws, ensuring durability and easy maintenance. Operating temperature ranges from -20°C to +50°C. The positive pressure opening is +3 inches of water column (~750Pa) for international markets and +9 inches of water column (~3000Pa) for the Chinese domestic market. Negative pressure activation is -8 inches of water column (~-2000Pa) for all markets.
The operating principle is simple yet effective: when tank pressure exceeds the set limit, the pressure valve automatically releases vapor; when the pressure falls below the allowable vacuum, the vacuum valve allows air into the tank while the pressure valve remains closed. This function reduces oil evaporation and continuously ensures tank safety.
Installation recommendations: cycle the poppet up and down before initial use to ensure smooth operation after long-term storage. The built-in inlet screen prevents particles from entering the valve, ensuring reliable sealing. Standard connection options include BSPP or NPT threads, and aluminum flanges can be customized to fit different tanks.
Choosing the HYVV High-Performance Vacuum Pressure Safety Vent Valve ensures precise pressure management, overpressure protection, and efficient venting for tank trucks, storage tanks, and gas stations, providing a safe and reliable solution for every tank operation.
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