IMPA 872339 Air Vent Head

The IMPA 872339 air vent heads are made of robust materials such as cast iron, cast aluminum or welded steel to ensure durability and resistance to environmental factors. The IMPA 872339 air vent heads are designed to include features that allow for effective air and gas flow regulation, contributing to the stability and safety of the systems they serve. If you are interested in our products, you can contact us at any time, if you need to order, you can indicate the type of air vent head and flange specifications required, we can customize the products you need according to your requirements.

Overview

Material selection

Many relatively inexpensive Air Vent Heads are designed using a welded plate to keep the cost down. In some cases, the material thickness is below 6 mm and the material are normal steel plates. These Air Vent Heads have a tendency not to last the required 5 years and the corrosion rate is high.

It is recommended that due to the applications areas of the Air Vent Head, that the valve body should be a casted metallic design, made in corrosion resistant material or be applied a coating that prevents corrosion. This could be cast ductile iron, or seawater resistant aluminum even though some authorities do not accept sea resistant aluminum. Stainless steel has also been abandoned as body material due to high corrosion rates.

A design in seawater resistant aluminum is lighter than that cast iron or stainless steel, but a steel body has high resisters towards mechanical impact. Aluminum Nickle bronze alloy is better than both cast iron and aluminum when looking at both corrosion and durability, but it is also expensive.

It is suggested that a coating should be according to corrosion category 4/5, marine standard (offshore application) to protect both exterior and interior parts against corrosion.

Drawing