Anode rod Galmet M-000004 magnesium 25×310 mm with M8 screw

Galmet magnesium anode rod 25×310 mm with M8 screw is a sacrificial anode designed to protect hot-water cylinders and storage tanks from electrochemical corrosion. The rod is made from magnesium alloy and is intended for installation in compatible water heaters to slow down rust and extend service life. This component is used during maintenance or as a replacement part to maintain the internal integrity of steel tanks that operate in potable water systems.

Advantages

The magnesium composition provides effective protection against corrosive processes by corroding preferentially, which helps preserve the tank's steel lining. Its compact dimensions allow installation in a variety of domestic and small commercial boilers where space is limited. The included M8 screw connection simplifies fitting and ensures secure mechanical and electrical contact with the tank. Using a proper anode rod reduces the need for premature tank replacements and supports reliable operation of the water heating system.

Suitable for

• Replacement during routine maintenance of domestic water heaters
• Protection of storage tanks in small commercial hot-water systems
• Situations requiring a compact anode with M8 threaded connection

Key specifications

• Material: magnesium alloy
• Length: 310 mm
• Diameter: 25 mm
• Thread/connection type: M8 screw
• Function: sacrificial anode for corrosion protection

How to use

Before installation, isolate the water heater from power and drain enough water to access the existing anode location. Unscrew and remove the old anode rod, inspect the tank interior for signs of corrosion, and clean the thread area. Fit the Galmet magnesium anode rod by securing the M8 screw into the tank fitting, ensuring a firm mechanical and electrical connection. Refill the tank, restore power and check for leaks. Periodic inspection of the anode is recommended to determine remaining mass and schedule replacement when significantly consumed.

Usage recommendations

For optimal protection, verify compatibility with the heater model and the tank's thread type before purchase. In systems with very hard or highly mineralized water, consider consulting manufacturer guidance as magnesium anodes may consume faster; alternative anode materials or water treatment can be appropriate. Replace the anode when it is substantially corroded to maintain effective corrosion protection.