AIR VENT HEAD 5K CAST IRON 53-ON CHINA STOCK
NIIKURA AIR VENT HEAD 53-ON Marine Single Float Disk Side Ventilation Cap | JIS F3012 Standard
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Key Features & Core Advantages
Key Features & Core Advantages- Automatic Anti-Backflow: High-precision SUS304 float disk with snap lip seal. Opens for air circulation normally; instantly seals to prevent backflow in rough seas.
- Multi-Layer Protection: Integrated flame screen, dust/insect-proof design reduces contamination, corrosion and fire risks.
- Global Compliance: Adheres to JIS F3012/IACS P3; customizable with CCS, ABS, BV, DNV, LR certifications for global projects.
- Corrosion-Resistant: Ductile iron (QT450-10) valve body, SUS304 internal parts with anti-corrosion coating for long service life.
- Easy Installation & Maintenance: Compact side-vent design, JIS 5K flange connection; simple routine checks minimize downtime.
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Technical Specifications
Technical Specifications|
Item
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Specification
|
|---|---|
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Product Model
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NIIKURA AIR VENT HEAD 53-ON
|
|
Standard Compliance
|
JIS F3012, IACS P3
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Nominal Pressure
|
5K (5kgf/cm²)
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|
Nominal Diameter
|
DN50 - DN200
|
|
Connection Type
|
Flange Connection (JIS 5K Flange)
|
|
Valve Body Material
|
Cast Iron / Ductile Iron (QT450-10)
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|
Float Disk & Internal Parts Material
|
SUS304 Stainless Steel
|
|
Working Temperature
|
-20℃ ~ 80℃
|
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Application Pressure Range
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-0.02MPa ~ 0.05MPa
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Application Scenarios
- Marine fuel oil tanks
- Fresh water storage tanks
- Ballast tanks
- Sewage tanks
- Other marine storage tanks that require ventilation and anti-backflow protection
Installation & Maintenance Guidelines
- Select matching DN size and JIS 5K flange per tank type (oil/water/ballast).
- Install at tank vent pipe highest point, away from fire/heat sources.
- Ensure seal ring integrity and even flange bolt tightening during installation.
- Regularly check float disk flexibility and replace aged seals timely.
- Clean ventilation ports to maintain unobstructed air flow.
Why Choose NIIKURA AIR VENT HEAD 53-ON Manufactured by QINGDAO GREAT MARINE VALVE CO., LTD?
As a professional marine equipment manufacturer, QINGDAO GREAT MARINE VALVE CO., LTD specializes in NIIKURA AIR VENT HEAD 53-ON R&D and production. Our products meet JIS F3012/IACS P3 standards with strict quality control, offering customizable certifications, factory-direct prices, flexible terms (MOQ 1 Pc) and 1-Year Warranty. We provide tailored solutions for shipyards, distributors and maintenance companies worldwide.
| AIRVENT HEAD 5K 65MM CAST IRON 53-ON CHINA STOCK |
| AIRVENT HEAD 5K 80MM CAST IRON 53-ON CHINA STOCK |
| AIRVENT HEAD 5K 100MM CAST IRON 53-ON CHINA STOCK |
| AIRVENT HEAD 5K 125MM CAST IRON 53-ON CHINA STOCK |
| AIRVENT HEAD 5K 200MM CAST IRON 53-ON CHINA STOCK |
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