Essential details
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Product Introduction
Vacuum Relief Valve
In the petrochemical, pharmaceutical, and fine chemical storage and transportation industries, preventing storage tanks from collapsing, deforming, or inhaling air to cause hazards due to accidental vacuum (negative pressure) is a crucial safety requirement. The Vacuum Relief Valve is a key safety device specifically designed to address this core risk. As an important component of our high-performance breather valve series, it is engineered for air-intake applications, delivering reliable vacuum protection while effectively reducing medium evaporation. It serves as an indispensable "safety intake guardian" on top of storage tanks to prevent vacuum damage.
Core Functions & Superior Performance
This vacuum relief valve features an exceptional guiding system, delivering performance that far surpasses ordinary standard valves on the market. Under normal operating conditions, it remains fully sealed. When the internal vacuum level of the storage tank exceeds the set value due to discharging, sudden temperature drop, or other contingencies, the vacuum disc is precisely lifted, allowing external gas (typically air or nitrogen) to be drawn into the tank to balance the pressure. This protects the tank structure from catastrophic vacuum damage. Once the vacuum is eliminated, the disc resets automatically to restore a tight seal. Focused exclusively on vacuum protection, it provides a dedicated solution for specific vacuum-related hazards.
Key Customer Value
- Precise & Reliable Vacuum Protection: Equipped with an advanced dual-guide system, ensuring smooth and stable operation of the disc with minimal wear. Its leakage rate is well below the stringent API 2000 standard, and it maintains industry-leading ±3% set vacuum accuracy, guaranteeing sensitive and precise protective actions.
- Superior Sealing & Durability: Critical internal components are constructed from corrosion and chemical resistant materials, resisting liquid and vapor adhesion to ensure long-term stability and reliable sealing. The disc and seat assembly feature a field-replaceable modular design, significantly simplifying maintenance and reducing total lifecycle costs.
- Fast Response & High Intake Capacity: The valve reaches full open position at only 10% beyond the set vacuum, ensuring rapid response to prevent vacuum buildup and potential tank collapse. The optimized flow channel design delivers large air intake capacity to meet urgent pressure balance needs.
- Wide Operating Adaptability & Flexibility: It operates reliably across a broad temperature range to suit diverse environments. Flexible vacuum setting options are available to match the protection requirements of various storage tanks. Flange connections comply with global mainstream standards including ANSI, DIN, and HG/T20592~20635-2009, ensuring seamless integration and easy installation for international tank projects.
- Cost-Effective Safety Assurance: With a compact, robust structure and effortless installation (requiring no external power or complex controls), it offers a reliable, maintenance-free, and highly cost-effective dedicated vacuum protection solution for storage tanks. It is a critical component for building a comprehensive tank pressure protection system when used in conjunction with breather valves and pressure relief valves.
Typical Applications
- Dedicated vacuum protection for fixed-roof storage tanks, preventing internal negative pressure caused by rapid liquid drainage or cooling.
- Atmospheric storage tanks, safeguarding against vacuum formation due to excessive pumping speed or condensation effects.
- As part of the tank pressure protection system, it is used in conjunction with breather valves, pressure relief valves, etc., to provide complete positive and negative pressure protection.
- Various storage tanks and process vessels in the chemical, food, pharmaceutical and other fields that need to prevent the container from being crushed.
Our Commitment
Hubei Wan'an Environmental Protection & Petrochemical Equipment Co., Ltd. is a professional manufacturer of storage tank safety equipment with years of deep industry expertise. We integrate innovative design with precision manufacturing processes to ensure that each vacuum relief valve meets the standards of high performance and high reliability.
We provide:
- Professional engineering selection support: Recommend the best model according to your medium characteristics, operating vacuum degree, temperature and tank parameters.
- Customized production services: Manufacture according to your specified materials, flange standards and special vacuum setting requirements.
- Complete technical documentation delivery: Provide detailed product manuals, installation guides and performance data sheets.
- Reliable global supply chain: Products are packaged with sturdy export-standard packaging to ensure safe and intact delivery to project sites around the world.
Provide a definite air intake path for vacuum risks. Choose Wan'an Vacuum Relief Valve to protect the structural integrity and operational safety of your storage tanks with precise response and durable sealing.
Welcome to contact us for detailed technical parameters and targeted quotations!
