# Water filter element USTM ST 10 Softening 4302086 for 10" housings, ion-exchange softening cartridge

**URL:** https://aio.lv/en/product--ustm-4302086--11270200
**Data updated:** 2025-12-30 18:39 (EET)
**Category:** Water Filters
**Manufacturer:** USTM
**Manufacturer code:** 4302086
**EAN:** 5907644302086
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 7.99 €
**Prices and availability valid until:** 2026-07-06 23:59
**Price without VAT (21%):** 6.60 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ustm-4302086--11270200

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.06.2026 | free |
| Pickup points | 18.06.2026 | 1.99 EUR |
| Courier delivery to door | 18.06.2026 | 4.99 EUR |

## Summary description

USTM ST 10 Softening 4302086 is a water filter element designed for standard 10" filter housings. This ion-exchange softening cartridge reduces water hardness by removing calcium and magnesium ions, protecting appliances and improving limescale-prone surfaces. Suitable for household and light commercial use where softened water is required; straightforward to install and replace.

## Long description

USTM ST 10 Softening 4302086 is a 10" in-line water filter element with an ion-exchange softening layer designed to reduce water hardness by removing calcium and magnesium ions. It fits standard 10" filter housings and compatible housings from other manufacturers, and is intended for installation ahead of specific water outlets to reduce limescale buildup in piping, fittings and household appliances.
Advantages
The ion-exchange cartridge provides localized water softening without the need for chemical dosing or large equipment. Its standard 10" × 2.5" dimensions allow straightforward replacement in most in-line filter systems. The element offers up to 2,000 litres or 6 months of service life under recommended conditions and supports flow rates up to 6 l/min.
Suitable for
Under-sink point-of-use softening (e.g., FS2/FS3 type systems)
10" standard in-line filter housings from USTM and other manufacturers
Protecting kettles, coffee machines and other small appliances from limescale
Key specifications
Brand: USTM
Model / MPN: 4302086
EAN: 5907644302086
Type: Ion-exchange softening cartridge
Size: 10" (height) × 2.5" (diameter)
Service life: up to 2,000 litres or 6 months
Maximum recommended flow rate: 6 l/min
How to use
Place the cartridge into a compatible 10" filter housing following the housing manufacturer's installation instructions. Install the softened cartridge upstream of the specific water outlet you wish to protect. Operate the system at or below the maximum recommended flow rate of 6 l/min. Replace the cartridge after 2,000 litres of treated water or after six months of use, whichever comes first.
Usage recommendations
Flush the filter housing briefly after installation to remove trapped air. Do not use the cartridge with water that is microbiologically unsafe without additional disinfection. Store replacement cartridges in a cool, dry place out of direct sunlight.

## FAQ

### How much does the Water filter element USTM ST 10 Softening 4302086 cost, and is it available for purchase?

The price is 7.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 276 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 15.06.2026 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 USTM 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 USTM 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

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