# kfa² replacement mushroom for 1/2" valve head model 891-012-98 (MPN 5907571890120)

**URL:** https://aio.lv/en/product--kfa-5907571890120--11836482
**Data updated:** 2026-03-09 14:50 (EET)
**Category:** Kitchen & Bathroom Faucets
**Manufacturer:** kfa²
**Manufacturer code:** 5907571890120
**EAN:** 5907571890120
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.99 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 3.30 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kfa-5907571890120--11836482

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

Replacement mushroom (seal/insert) designed for a 1/2" valve head by kfa², model 891-012-98. Manufactured to fit compatible 1/2" faucet or valve assemblies, this spare part restores sealing and operation of the valve head. Suitable for plumbing repairs and maintenance where the original mushroom component is worn or damaged.

## Long description

Replacement mushroom seal designed for 1/2" valve heads by kfa², model 891-012-98. This spare part restores the sealing function inside compatible 1/2" faucet or valve assemblies and is intended for use when the original insert is worn, leaking, or otherwise damaged. The component is manufactured to match the form and dimensions of the original mushroom insert to ensure proper fit and reliable operation within the valve head.
Advantages
This kfa² replacement mushroom provides a direct-fit solution for repairing a leaking or malfunctioning 1/2" valve head without requiring full replacement of the faucet assembly. The part restores sealing performance, helps prevent drips and water loss, and extends the service life of the valve head. Its design follows the original specifications to maintain smooth operation of the cartridge or spindle and to preserve water-tight connections under normal household water pressures.
Suitable for
Repairing leaking 1/2" valve heads in faucets and mixers
Replacing worn mushroom inserts during routine maintenance
Plumbing repairs in bathrooms, kitchens, and utility rooms
Service work where retaining the original valve body is preferred
Key specifications
Type: replacement mushroom seal / insert for valve head
Compatibility: designed for 1/2" valve head assemblies
Function: restores sealing and operational interface within the valve head
Material characteristics: elastomeric sealing element matched to original design (material type per manufacturer)
Application environment: indoor plumbing systems, potable water supply
How to use
Shut off the water supply and relieve pressure before disassembling the valve head. Remove the valve head or cartridge according to the faucet manufacturer’s service instructions, extract the worn mushroom insert, and inspect the seat and surrounding components for wear or debris. Fit the kfa² replacement mushroom into the valve head, ensuring correct orientation and seating, then reassemble the cartridge and valve head. Turn the water supply back on and check for proper operation and absence of leaks.
Usage recommendations
Use original manufacturer guidance for disassembly and torque values. If the valve seat or surrounding components show excessive wear or damage, consider replacing those parts or the entire valve head to ensure long-term reliability. Test the repaired assembly at normal operating pressure to confirm leak-free performance.

## FAQ

### How much does the kfa² mushroom for 1/2" valve head 891-012-98 cost, and is it available for purchase?

The price is 3.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 24 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 07.07.2026 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 kfa² 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 kfa² 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/11836482/67236129_large.webp