Sacrificial Magnesium Anode Galmet 25×310 mm for Water Heaters 5/4" (MPN 40-262200)

Sacrificial magnesium anode Galmet 25×310 mm with 5/4" thread is a replacement corrosion protection element designed for hot water tanks and domestic water heaters. The anode works by providing galvanic protection to internal steel surfaces, reducing the rate of rust and deterioration inside storage tanks and boilers. It is compatible with water heaters that accept a 5/4" threaded magnesium anode of the specified dimensions and is intended for routine replacement as part of regular maintenance.

Advantages

The magnesium composition ensures effective protection against corrosion in potable water systems by acting as a sacrificial metal that corrodes preferentially to the tank steel. The cylindrical shape and standard 5/4" thread allow straightforward installation in heaters designed for this size, while the 25×310 mm dimensions make it suitable for compact and medium-sized tanks. Regular replacement of this anode can reduce the need for more complex repairs and prolong the service life of water heating equipment.

Suitable for

• Domestic electric and gas water heaters with a 5/4" anode socket compatible with 25×310 mm rods
• Hot water storage tanks requiring sacrificial magnesium protection
• Maintenance replacement to prevent corrosion in potable water systems

Key specifications

• Material: magnesium (sacrificial anode)
• Shape: cylindrical rod
• Diameter × length: 25×310 mm
• Thread type: 5/4" threaded connection for installation
• Intended use: galvanic corrosion protection for steel tanks and heaters

How to use

Before installation, isolate the water heater from power and water supply and drain the tank to the recommended level. Unscrew the existing anode or remove the protective cap in the designated anode socket. Fit the magnesium anode into the 5/4" threaded socket and tighten to the manufacturer's recommended torque; ensure a secure mechanical and electrical contact with the tank. After installation, refill the tank and check for leaks. Replace the anode at intervals recommended by the water heater manufacturer or when significant consumption of the anode material is observed.

Usage recommendations

Inspect the anode annually and replace it if more than 50% consumed or showing heavy corrosion. Use in systems with potable water; avoid using in installations that specify alternative anode materials. Ensure compatibility with the heater's anode socket and follow safety procedures when working on pressurised or electrically powered equipment.