Basınç Vakum Ventili
Pressure Vacuum Relief Valve
Pressure vacuum relief valves (PVRVs) are critical safety equipment used to maintain internal pressure balance and ensure safety, particularly in atmospheric tanks storing fuel, chemical, and petrochemical products.
These systems automatically activate in the event of an increase or decrease in pressure inside the tank, protecting the tank from deformation, leakage or explosion risks.
Working Principle
The pressure vacuum valve provides two-way protection:
- Pressure direction: When the internal tank pressure exceeds the set limit, the valve opens to release the excess pressure.
- Vacuum direction: When the internal pressure of the tank falls below the external ambient pressure, the valve automatically draws in air to restore equilibrium.
Thanks to this dual protection, the structural integrity of the tank is preserved, emission losses are reduced, and process safety is ensured.
Edopec Engineering Approach
Edopec determines the appropriate pressure/vacuum valve type for each project by considering factors such as tank volume, stored product type, process temperature, and environmental conditions.
Our solutions are designed to be fully compliant with international safety and environmental standards.
Edopec solutions include:
- Pressure/vacuum valves for tank venting systems
- Flame arrestor integrated models
- Products compliant with API 2000, ISO 28300, EN 12874 standards
- Stainless steel, carbon steel, aluminium and special alloy options
- Performance testing, certification and commissioning services
Advantages of Pressure/Vacuum Valves
- Protection of the tank against explosion and collapse risks
- Reduction of vapour losses and emissions
- Energy efficiency and environmental safety
- Long-lasting design with easy maintenance
- Compliance with integrated safety systems with flame arresters
Safe Storage with Edopec Assurance
Edopec manages engineering calculations, supply processes and implementation under one roof in its pressure vacuum valve systems designed to ensure continuous safety in tank farms and refinery facilities.
Each valve is delivered with a documented, traceable and standard-compliant engineering process.
Edopec – Where safety, efficiency and engineering excellence converge.





