Air Vent Head JIS-F3012A-122 — IMPA 87

The JIS-F3012A-122 Air Vent Head is a vital component for the ventilation of shipboard tanks, including ballast, fresh water, fuel oil, and cargo tanks. It is commonly installed on cargo ships, container vessels, tankers, and offshore support vessels to ensure proper air exchange while preventing water ingress and contamination. By maintaining tank pressure equilibrium and allowing safe venting, this air vent head protects tank integrity and supports compliance with maritime safety regulations.

Constructed to JIS F7400 standards with JIS B2220-5K flanges, this air vent head features a robust body and cover made from FC/FCD cast iron, offering excellent durability and corrosion resistance. Internal components such as the valve disc, guide rod, filter screen, screen frame, and bolts are made from SUS 304 stainless steel, ensuring reliable operation in harsh marine environments. The valve seat seal and packing are made from NBR rubber, providing effective sealing against water and vapors. Available in sizes from 50mm to 450mm, it accommodates a wide range of tank venting requirements.

As a leading China-based wholesale and retail supplier of IMPA-coded marine stores, ALL-K MARINE Ship Store (trading as ALL-K MARINE CO.,LTD) offers the full range of JIS-F3012A-122 air vent heads and other machinery equipment. We source from qualified manufacturers and conduct supplier QC inspections to ensure product quality. With competitive wholesale and retail pricing, 24-hour quotes, and reliable worldwide shipping via freight forwarders, we serve shipowners, ship managers, and ship chandlers globally. Delivery to your ship agent can be arranged upon request.

Key Features

Technical Specifications

Size (mm)D (mm)C (mm)H (mm)H1 (mm)N (holes)Weight (kg)
501301051821274×Φ15~4.5
651551301981644×Φ15~6.2
801801452231764×Φ19~8.5
1002001652171608×Φ19~10.5
1252352002401808×Φ19~14.0
1502652302652088×Φ19~18.0
2003202803102408×Φ23~26.0
25038534537528012×Φ23~38.0
30043039041531012×Φ23~50.0
35048043549036012×Φ23~65.0
40054049564047516×Φ25~95.0
45060555571352216×Φ25~120.0

Frequently Asked Questions

What is the purpose of an air vent head on a ship?

An air vent head is installed on ship tanks to allow air to enter and exit as the tank is filled or emptied, preventing pressure build-up or vacuum. It also prevents water and contaminants from entering the tank, ensuring safe operation.

What sizes are available for this air vent head?

This air vent head is available in sizes from 50mm to 450mm, with flange dimensions and weights as listed in the specifications table. Custom sizes may be available upon request.

Can you supply the full range of IMPA machinery equipment?

Yes, ALL-K MARINE Ship Store supplies the full range of IMPA-coded marine stores, including machinery equipment. We offer wholesale and retail quantities with competitive pricing.

Do you ship worldwide and can you deliver to my ship agent?

We ship worldwide via freight forwarders. Delivery to your ship agent can be arranged upon request. Please contact us for a quote including shipping costs.

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