Stainless steel Storage Tank 8 Inch Fuel Oil PV Vent Breather Valve

Accessories

• Valve Body – SS304 (standard), SS316L optional for higher corrosion resistance.
• Valve Disc / Valve Core – SS304 or PTFE-coated stainless steel for stable PV sealing.
• Spring Assembly – SS304/SS316 precision-calibrated pressure and vacuum spring.
• Seal Ring – PTFE / Viton (FKM) / EPDM / Silicone options.
• Valve Cover / Weather Hood – SS304 stainless steel with protective structure.
• Connection Flange (8 Inch) – SS304 ANSI/DIN flange for tank vent installation.
• Flame Arrester (optional) – SS304 flame-proof element for fuel vapor safety.
• Filter Screen (optional) – SS304 mesh for dust and debris prevention.

• Material: SS304 standard construction; optional SS316L upgrade; PTFE or Viton sealing materials for oil and high-temperature resistance.
• Structural Design: Integrated pressure-vacuum (PV) breathing structure; spring-loaded automatic operation; optional flame arrester, anti-splash hood, and high-flow 8-inch vent design.
• Pressure Rating: Working pressure typically 0.05–0.6 MPa; adjustable pressure/vacuum set points; test pressure up to 0.9 MPa depending on design.
• Temperature Range: PTFE seals -20°C to 150°C; Viton seals -10°C to 200°C; suitable for fuel oil, petroleum liquids, and industrial storage media.
• Functional Performance: Automatic tank breathing, pressure relief, vacuum protection, vapor emission control, contamination prevention, and tank structural protection.
• Grade Classification: Industrial grade, chemical grade, fuel storage safety grade; hygienic design available for clean liquid storage systems.
• Standards Compatibility: ANSI B16.5 (8 inch flange), DIN, ISO; ASME and API compatible venting configurations for industrial tank systems.
• Certification / Compliance Level: Factory pressure calibration testing; optional explosion-proof and flame arrester compliance; safety vent performance verification.
• Installation Direction: Primarily vertical installation on tank roof vent nozzle; horizontal vent line installation possible with supported internal spring orientation.
• Customization Options: 8 inch standard size; custom DN sizes available; adjustable pressure settings; optional flame arrester; special sealing materials; OEM production and sample customization supported.

Stainless steel Storage Tank 8 Inch Fuel Oil PV Vent Breather Valve

 

Feature (F)、Advantage (A)、Benefit (B)

 

     1.High-Strength Stainless Steel Structure：

• F: SS304/SS316L forged body, CNC machining, full welding construction, precision spring-loaded valve core design.
• A: Enhances structural strength, corrosion resistance, and pressure stability while reducing leakage and deformation risks.
• B: Customers obtain longer service life, improved tank protection, and lower maintenance or replacement costs.

2. Integrated High-Flow 8 Inch PV Breathing Design：

• F: Large-diameter 8-inch airflow channel, balanced pressure-vacuum structure, precision valve disc with calibrated spring.
  A: Improves ventilation efficiency, stabilizes tank internal pressure, and increases response speed during filling or discharge.
  B: Users achieve safer fuel storage, reduced vapor loss, and smoother operational performance.

3. Advanced Sealing System：

• F: PTFE/Viton sealing rings, precision-machined sealing surfaces, center sealing PV structure.
  A: Enhances sealing reliability, reduces vapor leakage, improves chemical and temperature resistance.
  B: Customers benefit from higher environmental safety, improved energy efficiency, and lower emission-related losses.

4. Sanitary Polishing & Protective Components：

• F: Internal polishing Ra≤0.8 μm, optional flame arrester, stainless steel filter screen, anti-weather hood.
  A: Reduces contamination, enhances safety performance, and improves resistance to external environmental conditions.
  B: Users maintain cleaner storage systems, improve compliance with safety standards, and reduce operational risks.

5. Modular & Customizable Engineering Design：

• F: Replaceable internal modules, multi-standard flange compatibility, adjustable pressure settings.
  A: Simplifies maintenance, increases installation flexibility, and adapts to different tank systems and industry standards.
  B: Customers gain easier installation, reduced downtime, customized performance options, and long-term operational reliability.

 

Stainless steel Storage Tank 8 Inch Fuel Oil PV Vent Breather Valve

 

Interface Connection Types:
8 inch ANSI B16.5 flange (standard), DIN flange, ISO flange; optional welded neck connection for tank roof vent nozzles and industrial vent pipelines.

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Manufacturing & Processing Methods:
CNC precision machining, laser cutting, sheet metal bending for protective covers, deep drawing forming, automated TIG full welding, precision spring forming and assembly.

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Surface Treatment Methods:
Mechanical polishing, industrial polishing, mirror polishing optional, electrolytic polishing for sanitary applications, pickling and passivation for corrosion resistance.

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Raw Material Processing Methods:
Precision forging for main valve body strength, investment casting for complex internal components, stainless steel plate pressing and rolling for covers and weather hoods.

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Operation Method:
Automatic pressure-vacuum (PV) self-actuated breathing operation; no manual, pneumatic, or electric actuator required during normal tank ventilation

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Seal Ring Material Options:
PTFE for chemical resistance, Viton (FKM) for fuel oil and high-temperature service, EPDM and Silicone optional depending on media compatibility.

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Sealing Structure Type:
Center sealing spring-loaded valve disc design; precision pressure and vacuum sealing mechanism ensuring stable opening pressure and reliable resealing performance.