Welding type Marine Tank Ventilator(Welding type Marine air vent head) is a high-performance deck fitting designed for enclosed compartments (oil tanks, water tanks, ballast tanks) of ships and offshore platforms. It balances internal pressure during liquid level changes (air intake/exhaust) while preventing seawater, rain, and contaminants from entering the tank, ensuring safe and stable operation of marine tanks.
Core Specifications
Pressure Rating: 5K,10K,PN10 PN16 ASNI150, suitable for standard marine tank pressure conditions
Nominal Diameter: DN50 to DN 600, supporting large air flow for rapid pressure equalization
Design Standard: Compliant with marine industry standards (e.g., CB/T 3594, CB 20037-2012)
Material: Cast iron/cast steel (anti-corrosion treatment), with stainless steel sealing components
Key Features
Efficient Pressure Balance
Large-diameter air passage ensures fast air exchange, avoiding tank deformation or damage caused by pressure differences.
Reliable Sealing Protection
Equipped with a float-type (or mechanical) sealing structure that automatically closes the vent when impacted by waves/rain, achieving IPX7-level waterproof performance.
Durable Marine Adaptability

Welding Marine Float Type Air Pipe Head,AIR VENT HEAD,QINGDAO AIR VENT HEAD
Corrosion-resistant material and surface coating (anti-salt spray) meet long-term service requirements in harsh marine environments.
Easy Installation & Maintenance
Standard flange connection (matching ship deck pipelines) allows quick assembly; internal components are modular for convenient inspection and replacement.
Applications
Ship oil tanks, fresh water tanks, ballast tanks
Offshore platform storage tanks
Cargo holds and auxiliary machinery compartment ventilation systems
Customization & Certifications
Support for material customization (stainless steel 304/316, aluminum alloy)
Provide classification society certificates (CCS, BV, LR, DNV, etc.)
Customizable flange standards (GB, JIS, ANSI)

Max@greatmarinevalve.com

max@greatmarinevalve.com

Whatsapp:0086-18765272975