# Thermostatic Radiator Valve Set CALEFFI KIT4221402 1/2" Simple Thermostatic Kit

**URL:** https://aio.lv/en/product--caleffi-kit4221402--11700052
**Data updated:** 2026-03-08 08:46 (EET)
**Category:** Heating Radiators
**Manufacturer:** CALEFFI
**Manufacturer code:** KIT4221402
**EAN:** 8016615433982
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 37.99 €
**Prices and availability valid until:** 2026-07-08 23:59
**Price without VAT (21%):** 31.40 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--caleffi-kit4221402--11700052

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.06.2026 | free |
| Pickup points | 02.07.2026 | 1.99 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

Thermostatic radiator valve set by CALEFFI, model KIT4221402, with 1/2" connections. This simple thermostatic kit includes the thermostat valve and necessary components for temperature control on a radiator. Designed for regulating room temperature, it suits residential and light commercial heating installations where compact, direct control of radiator flow is required.

## Long description

CALEFFI KIT4221402 thermostatic radiator valve set with 1/2" connections is a compact, factory-matched kit intended for direct control of radiator flow in residential and light commercial heating systems. The set comprises a thermostatic valve and the essential components required to enable automatic temperature regulation at the radiator, simplifying installation and ensuring a consistent room climate when connected to a central heating system.
Advantages
The thermostatic kit provides automatic regulation of radiator flow according to room temperature, reducing manual adjustments. Its compact 1/2" connection size fits common radiator inlets and supports straightforward replacement or retrofit. The matched components are designed to ensure compatibility and reliable operation within typical hot-water heating circuits, offering accurate control and stable performance over time.
Suitable for
Domestic radiators in single-family homes and apartments
Light commercial radiators in offices or small retail spaces
Retrofit projects where a compact 1/2" thermostatic solution is required
Zones requiring independent room temperature control
Key specifications
Connection size: 1/2" suitable for standard radiator inlets
Type: thermostatic radiator valve kit with matched components
Function: automatic temperature control via thermostatic valve
Application: hot-water central heating systems for room-level regulation
Form factor: compact kit designed for direct radiator mounting
How to use
Install the thermostatic valve set at the radiator inlet according to the radiator manufacturer’s and local plumbing codes. Ensure the system is depressurized and drained as required before replacing or fitting the valve. Connect the 1/2" fittings securely, restore system water and pressure, then set the thermostat element to the desired room temperature. Check for leaks and verify that the valve modulates flow as the room temperature changes.
Usage recommendations
For reliable operation, commission the valve after installation by allowing the heating system to reach normal operating temperature and observing several heating/cooling cycles. Avoid exposing the thermostat sensor to direct drafts or heat sources that could affect room-temperature sensing. Periodic inspection during routine system maintenance will help maintain accurate control and prolong service life.

## FAQ

### How much does the Thermostatic Radiator Valve Set CALEFFI KIT4221402 cost, and is it available for purchase?

The price is 37.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 29.06.2026 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 CALEFFI 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 CALEFFI 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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