# Magnesium Anode Biawar 22173 21×280 mm 3/4" for Water Heaters and Boilers

**URL:** https://aio.lv/en/product--biawar-22173--12295988
**Data updated:** 2026-04-26 18:48 (EEST)
**Category:** Home Appliance Accessories
**Manufacturer:** Biawar
**Manufacturer code:** 22173
**EAN:** 5901862141076
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 21.49 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 17.76 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--biawar-22173--12295988

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.99 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

Magnesium anode Biawar model 22173 (21×280 mm, 3/4") is a corrosion protection rod designed for water heaters, boilers and closed potable water systems. Made of magnesium to provide sacrificial protection against tank corrosion, it extends appliance life and reduces maintenance. Suitable replacement anode for compatible systems with 3/4" threaded connection.

## Long description

Magnesium Anode Biawar 22173 (21×280 mm, 3/4") is a sacrificial corrosion protection rod intended for use in water heaters, boilers and closed potable water systems. Manufactured from magnesium, the anode provides electrochemical protection by corroding in place of the steel tank, reducing rust formation and helping extend the service life of the appliance. The product fits systems with a 3/4" threaded connection and is designed as a direct replacement where the physical dimensions and thread type match.
Advantages
This magnesium anode delivers sacrificial protection to metal tanks, slowing down internal corrosion and minimizing sediment-related perforation. Its solid magnesium composition ensures a predictable consumption rate under normal water chemistry, simplifying maintenance scheduling. The standard 3/4" threaded connection and the stated rod diameter and length make installation straightforward in compatible heaters and boilers.
Suitable for
Domestic and commercial water heaters and boilers with a 3/4" anode port
Closed potable water systems requiring sacrificial anode protection
Replacement of worn or depleted magnesium anodes of similar dimensions (21×280 mm)
When it may not be suitable
This magnesium anode may not be appropriate for systems that require aluminum or zinc alloy anodes, or for tanks that specify a different anode diameter, length or thread size. In water supplies with very high chloride content or aggressive chemistry, magnesium anodes can corrode rapidly and may require more frequent replacement or a different material choice.
Key specifications
Material: magnesium (sacrificial anode)
Rod diameter: 21 mm
Rod length: 280 mm
Connection: 3/4" threaded
Intended application: corrosion protection for water heaters, boilers and closed potable water systems
How to use
Switch off power or fuel to the heater and isolate the water supply before beginning replacement. Drain enough water from the tank to access and remove the old anode from the 3/4" threaded port. Apply suitable thread sealant if required by the appliance manufacturer, then screw in the new magnesium anode until properly seated and hand-tightened or torqued to the specification provided in the appliance manual. Refill the tank, restore power or fuel, and check for leaks and correct operation.
What to consider before purchase
Verify the anode port thread size and type on your appliance is 3/4" and compatible with this anode.
Confirm the required rod diameter and length (21×280 mm) match the space and mounting in your tank.
Assess water chemistry (hardness, chloride level) to estimate anode consumption rate and replacement frequency.
Usage recommendations
For effective corrosion protection, inspect the anode at regular intervals (typically annually) and replace it when the magnesium mass is significantly depleted or the rod is heavily pitted. Follow appliance manufacturer guidelines for installation torque and sealing to ensure a reliable mechanical and hydraulic connection.

## FAQ

### How much does the Magnesium Anode Biawar 22173 21×280 mm 3/4" cost, and is it available for purchase?

The price is 21.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 16.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Biawar products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Biawar service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12295988/68216972_large.webp