Anode with gasket 21.3x700 21822

Corrosion protection in central heating and domestic hot water systems.

The magnesium anode with gasket is a key element protecting the installation from corrosion, thereby extending its lifespan. Its task is to protect metal elements, such as boilers and heat exchangers, through a galvanic process – the anode "sacrifices" itself, corroding instead of them. Regular replacement of the anode, according to the manufacturer's recommendations, is essential to maintain the full functionality of the system and avoid costly repairs.

This model of anode is characterized by dimensions of 21.3 mm in diameter and 700 mm in length, and a 3/4 inch external thread with a gasket. This allows for easy installation and a tight connection in most standard installations. Made of high-quality magnesium, it provides effective cathodic protection. It is worth remembering that magnesium anodes are consumed during operation, so regular inspection of the technical condition and replacement are so important.

Why choose a magnesium anode?

• Effective protection: Protects installation components from corrosion, extending their lifespan.
• Easy installation: 3/4 inch thread with gasket ensures simple and tight installation.
• Versatility: Fits many types of tanks and heat exchangers – especially recommended for Biawar devices (according to the compatibility table).
• Recommended by service: Replacement every 18 months ensures optimal installation protection.
• Availability: Widely available on the market from distributors such as Onninen.

This anode is used in central heating and domestic hot water systems where there is a risk of metal corrosion. It is particularly recommended for use with Biawar brand tanks and heat exchangers, but thanks to the standard thread, it can also be used in other devices. Remember to replace the anode regularly – every 18 months – to ensure continuous protection of your installation against the harmful effects of corrosion.