# Flexible connection hose kfa² 1/2" female — 3/4" female (model 645-040-34)

**URL:** https://aio.lv/en/product--kfa-645-040-34--11855521
**Data updated:** 2026-03-09 17:31 (EET)
**Category:** Kitchen & Bathroom Faucets
**Manufacturer:** kfa²
**Manufacturer code:** 645-040-34
**EAN:** 5907571640497
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 7.49 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 6.19 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kfa-645-040-34--11855521

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Flexible connection hose by kfa², model 645-040-34, with 1/2" female and 3/4" female threaded ends. Designed for plumbing connections between fixtures and supply lines, it provides a flexible link for water systems and easy installation in confined spaces. Suitable for replacing rigid pipes, connecting taps, mixers, or other sanitary fittings where these thread sizes are required.

## Long description

Flexible connection hose kfa² 1/2" female — 3/4" female (model 645-040-34) is a braided plumbing hose designed to connect sanitary fixtures and supply lines where a 1/2" female to 3/4" female transition is required. The hose provides flexibility in tight installation spaces and is intended as an alternative to rigid piping when minor misalignment or vibration compensation is needed. It is suitable for indoor water systems and standard household plumbing applications.
Advantages
The braided construction offers mechanical strength and resistance to kinking while maintaining flexibility for easy routing. Threaded female connectors at both ends enable direct connection to compatible fittings without additional adapters when the specified thread sizes match. The hose simplifies installation in confined areas, reduces installation time compared with rigid pipework, and accommodates small movements or thermal expansion within the water system.
Suitable for
Connecting taps, mixers and faucets to supply lines with 1/2" and 3/4" thread interfaces
Replacing short sections of rigid pipe where flexibility is required
Plumbing repair and retrofit work in bathrooms and kitchens
Installations in tight or awkward spaces where bending rigid pipe is impractical
Key specifications
Connector types: 1/2" female to 3/4" female threaded ends
Construction: braided flexible hose for water supply
Application: cold and hot water indoor plumbing (domestic use)
Typical length: suitable for short-run connections between fixture and supply stop
Design features: kink-resistant braid and flexible body for alignment and vibration absorption
How to use
Before installation, shut off the water supply and relieve pressure by opening a downstream tap. Verify that the thread sizes on the hose match the fixture and supply connections. Hand-thread the female connectors onto the male threads, ensuring proper engagement, then tighten to a firm fit using an appropriate tool without over-torquing to avoid damaging threads or fittings. After installation, turn the water supply back on and check all joints for leaks; retighten if necessary following manufacturer guidance.
Usage recommendations
Use this flexible hose only with compatible 1/2" and 3/4" threaded fittings and within typical domestic water pressure ranges. Avoid sharp bends that could reduce flow or stress the braid. Inspect connections periodically for wear or leakage and replace the hose if any damage or persistent leaks are observed.

## FAQ

### How much does the kfa² flexible hose 1/2" F — 3/4" F (645-040-34) cost, and is it available for purchase?

The price is 7.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 90 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 13.07.2026 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/11855521/67253834_large.webp