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AIR VENT HEAD 5K CAST IRON 53-ON CHINA STOCK
AIR VENT HEAD 5K CAST IRON 53-ON CHINA STOCK
AIR VENT HEAD 5K CAST IRON 53-ON CHINA STOCK
AIR VENT HEAD 5K CAST IRON 53-ON CHINA STOCK
AIR VENT HEAD 5K CAST IRON 53-ON CHINA STOCK
AIR VENT HEAD 5K CAST IRON 53-ON CHINA STOCK
Specifications
Brand Name :
GMV.OEM
Model Number :
53-ON
Description

NIIKURA AIR VENT HEAD 53-ON Marine Single Float Disk Side Ventilation Cap | JIS F3012 Standard

The NIIKURA AIR VENT HEAD 53-ON, manufactured by QINGDAO GREAT MARINE MACHINERY CO., LTD (Official Website: www.greatmarinevalve.com), is a premium marine automatic ventilation cap (breather cap/air pipe head) compliant with JIS F3012 and IACS P3 standards. Designed for harsh marine environments, it maintains pressure balance in tanks (oil, fresh water, ballast, sewage) by preventing overpressure/vacuum and blocking seawater/rainwater ingress, ensuring tank system safety and longevity.
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AIR VENT HEAD 5K CAST IRON 53-ON CHINA STOCKKey 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.

AIR VENT HEAD 5K CAST IRON 53-ON CHINA STOCKTechnical Specifications

Item
Specification
Product Model
NIIKURA AIR VENT HEAD 53-ON
Standard Compliance
JIS F3012, IACS P3
Nominal Pressure
5K (5kgf/cm²)
Nominal Diameter
DN50 - DN200
Connection Type
Flange Connection (JIS 5K Flange)
Valve Body Material
Cast Iron / Ductile Iron (QT450-10)
Float Disk & Internal Parts Material
SUS304 Stainless Steel
Working Temperature
-20℃ ~ 80℃
Application Pressure Range
-0.02MPa ~ 0.05MPa

Application Scenarios

Widely used in bulk carriers, container ships, oil tankers, yachts, the NIIKURA AIR VENT HEAD 53-ON (manufactured by QINGDAO GREAT MARINE VALVE CO., LTD) is installed at the highest point of vent pipes for:
  • 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

  1. Select matching DN size and JIS 5K flange per tank type (oil/water/ballast).
  2. Install at tank vent pipe highest point, away from fire/heat sources.
  3. Ensure seal ring integrity and even flange bolt tightening during installation.
  4. Regularly check float disk flexibility and replace aged seals timely.
  5. Clean ventilation ports to maintain unobstructed air flow.

Why Choose NIIKURA AIR VENT HEAD 53-ON Manufactured by QINGDAO GREAT MARINE VALVE CO., LTD?

AIR VENT HEAD 5K CAST IRON 53-ON CHINA STOCKAs 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.

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AIR VENT HEAD 5K CAST IRON 53-ON CHINA STOCK

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Product Detail
Brand Name :
GMV.OEM
Model Number :
53-ON
Contact Supplier
AIR VENT HEAD 5K CAST IRON 53-ON CHINA STOCK
AIR VENT HEAD 5K CAST IRON 53-ON CHINA STOCK
AIR VENT HEAD 5K CAST IRON 53-ON CHINA STOCK

QINGDAO GREAT MARINE MACHINERY CO,.LTD

Site Member
5 Years
qingdao
Since 2015
Business Type :
Manufacturer, Exporter, Seller
Main Products :
AIR VENT HEAD, JIS BRONZE MARINE VALVE, JIS CAST IRON MARINE VALVES
Employee Number :
10~50
Certification Level :
Site Member
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