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STAINLESS STEEL Tank Storage Water Air Vent PV Oil Fuel Breather Valve

JN-HXAVSQ-23 1002-2
STAINLESS STEEL Tank Storage Water Air Vent PV Oil Fuel Breather Valve. Size: DN25–DN150. Grade: SS304/SS316L. Standard: DIN, SMS, ISO, 3A. Working pressure: 0.05–0.6 MPa. Test pressure: 0.9 MPa. Temperature range: -20°C to 150°C. PTFE seals for chemicals; Viton seals for oil and high-temperature tank ventilation applications.
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STAINLESS STEEL Tank Storage Water Air Vent PV Oil Fuel Breather Valve
 
STAINLESS STEEL Tank Storage Water Air Vent PV Oil Fuel Breather Valve is apressure-vacuum protection valve mainly installed on the top vent nozzle of storage tanks or terminal breathing pipelines. At this position, it automatically releases overpressure and admits air under vacuum, protecting tanks from deformation, contamination, and product loss while stabilizing internal pressure. It is widely used in water storage, fuel oil tanks, chemical vessels, and process containers requiring safe gas exchange. Common types includepressure vacuum breather valves, flame arrester integrated types, adjustable spring-loaded models, weighted disc types, and hygienic sanitary versions, allowing selection based on pressure rating, medium compatibility, safety level, and industrial or sanitary application requirements.Air Valve
 

TheSTAINLESS STEEL Tank Storage Water Air Vent PV Oil Fuel Breather Valve differs from a standard breather valve by providingaccurate pressure-vacuum (PV) regulation, ensuring precise tank pressure balance rather than simple fixed ventilation. It offers improved sealing performance, stable airflow control, and stronger protection against vacuum damage and over-pressure risks. Compared with other suppliers, our valves feature precision CNC machining,full stainless steel sanitary construction,high-quality PTFE/Viton sealing systems, and strict pressure calibration testing, resulting in higher operational stability,enhanced corrosion resistance,longer service life, and more reliable safety performance in water, oil, and fuel storage applications.Water Breather Valve

Accessories

 Component & Material Table

  • 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 based on media.

  • Valve Cover / Weather Hood – SS304 stainless steel protective structure.

  • Connection End – SS304 sanitary clamp, threaded, welded, or flange connection.

  • Filter Screen (optional) – SS304 mesh for dust and debris prevention.

  • Flame Arrester / Protective Cap (optional) – SS304 safety accessory for fuel vapor protection.

 
Product Parameter Details
 
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  • Material: SS304 standard construction; optional SS316L upgrade; PTFE/Viton sealing materials for chemical, oil, and high-temperature resistance.
  • Structural Design: Integrated pressure-vacuum (PV) breathing structure; spring-loaded automatic operation; optional flame arrester, anti-splash hood, or internal filter element.
  • Pressure Rating: Working pressure typically 0.05–0.6 MPa; adjustable breathing pressure settings; test pressure up to 0.9 MPa depending on size.
  • Temperature Range: PTFE seals -20°C to 150°C; Viton seals -10°C to 200°C; suitable for water, oil, fuel, and hygienic liquid storage systems.
  • Functional Performance: Automatic tank breathing; pressure relief; vacuum protection; contamination prevention; vapor emission control; stabilization of tank internal pressure.
  • Grade Classification: Sanitary grade, food-grade, pharmaceutical-grade, chemical industry grade, industrial fuel storage grade depending on polishing level and sealing materials.
  • Standards Compatibility: DIN, SMS, ISO, 3A hygienic standards; ANSI/ASME flange options for industrial tank systems.
  • Certification / Compliance Level: Hygienic surface finish Ra≤0.8 μm; food-contact compliant materials; factory pressure calibration and safety vent testing.
  • Installation Direction: Preferred vertical installation on tank top vent nozzle; horizontal vent line installation possible with supported internal spring orientation.
  • Customization Options: Size DN25–DN150; adjustable pressure/vacuum settings; custom sealing materials; multi-standard connections; OEM production and sample customization available.
 
STAINLESS STEEL Tank Storage Water Air Vent PV Oil Fuel Breather Valve
 
Feature (F)、Advantage (A)、Benefit (B)

    1. High-Precision Stainless Steel Construction

  • F: SS304/SS316L precision-forged body, CNC machining, full welding production, calibrated spring-loaded valve core.
  • A: Improves structural strength, corrosion resistance, and pressure stability while reducing leakage and deformation risk.
  • B: Customers obtain longer service life, reduced maintenance frequency, and reliable tank safety protection.

    2. Integrated Pressure-Vacuum (PV) Breathing Design

  • F: Combined pressure and vacuum regulating structure with balanced airflow channel and precision valve disc.
  • A: Enhances pressure control accuracy, improves ventilation efficiency, and prevents tank collapse or over-pressure damage.
  • B: Users achieve safer tank operation, reduced equipment risk, and stable storage performance.

    3. Advanced Sealing System Engineering

  • F: PTFE/Viton/EPDM sealing options, precision-machined sealing surfaces, center sealing spring-loaded design.
  • A: Improves sealing reliability, reduces vapor leakage, enhances chemical resistance and temperature tolerance.
  • B: Customers benefit from lower product loss, improved environmental safety, and reduced operating costs.

    4. Sanitary Polishing & Protective Structural Features

  • F: Internal polishing Ra≤0.8 μm, optional flame arrester, stainless steel filter screen, weather protection hood.
  • A: Minimizes contamination risk, improves cleanability, enhances safety in fuel and sanitary storage systems.
  • B: Users maintain higher product quality, meet safety standards, and reduce long-term operational hazards.

    5. Modular & Customizable Engineering Design

  • F: Replaceable internal components, adjustable pressure settings, multi-standard DIN/ISO/3A/ANSI connections.
  • A: Simplifies maintenance, improves installation flexibility, increases compatibility with various tank systems.
  • B: Customers gain faster installation, reduced downtime, customized application performance, and long-term operational reliability.
 
 
STAINLESS STEEL Tank Storage Water Air Vent PV Oil Fuel Breather Valve
 
Interface Connection Types:Sanitary clamp (Tri-clamp), welded end, threaded connection, DIN/SMS/ISO hygienic fittings, ANSI/ASME flange connections suitable for tank roof vents and industrial exhaust pipelines.
Manufacturing & Processing Methods:CNC precision machining, laser cutting, sheet metal bending for covers, deep drawing forming, automated TIG full welding, precision spring forming and calibrated assembly.
Surface Treatment Methods:Mechanical polishing, industrial polishing, mirror polishing optional, electrolytic polishing (Ra≤0.8 μm internal for sanitary grade), pickling and passivation for improved corrosion resistance.
Raw Material Processing Methods:Precision forging for main valve body strength, investment casting for internal components, stainless steel plate pressing and rolling for weather hoods and protective covers.
Operation Method:Automatic pressure-vacuum (PV) self-actuated breathing; no manual, pneumatic, or electric actuator required during normal tank ventilation operation.
Seal Ring Material Options:PTFE for chemical resistance, Viton (FKM) for oil and high-temperature fuel media, EPDM for water-based systems, Silicone for hygienic and food-grade applications.
Sealing Structure Type:Center sealing spring-loaded valve disc design; precision pressure and vacuum sealing mechanism ensuring stable opening pressure and reliable resealing performance.
 
 
 
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