# Thermostatic radiator valve DANFOSS Redia M30x1.5 015G5121, 1/2" connection

**URL:** https://aio.lv/en/product--danfoss-015g5121--11553700
**Data updated:** 2026-02-15 12:50 (EET)
**Category:** Heating Radiators
**Manufacturer:** DANFOSS
**Manufacturer code:** 015G5121
**EAN:** 5702424625825
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 15.99 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 13.21 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--danfoss-015g5121--11553700

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

DANFOSS Redia thermostatic radiator valve M30x1.5 (model 015G5121) with a 1/2" connection provides temperature regulation for hot-water radiators. Designed to control flow to maintain set room temperatures, it suits residential and commercial heating systems. The valve enables automatic balancing, improving comfort and energy efficiency while simplifying installation and replacement.

## Long description

The DANFOSS Redia thermostatic radiator valve M30x1.5 with 1/2" connection is designed to regulate flow to hot-water radiators and maintain set room temperatures automatically. It is compatible with standard thermostatic heads that fit the M30x1.5 spindle and connects to radiator bodies or return pipes with a 1/2" threaded fitting. The valve body and internal mechanism provide a reliable means of modulating water flow according to the head’s setpoint, supporting automatic balancing and stable room climate control in residential and commercial heating installations.
Advantages
This thermostatic valve offers precise temperature control through a proven mechanical sensing and modulation system, enabling consistent room temperature without manual balancing. The 1/2" connection simplifies replacement of existing radiator valves and supports common radiator installation layouts. Durable construction and compatibility with standard M30x1.5 thermostatic heads ensure straightforward maintenance and long-term operation. The valve contributes to improved energy efficiency by reducing overheating and allowing individual radiator adjustments.
Suitable for
Domestic hot-water radiator systems in apartments and houses
Small commercial heating zones and individual rooms
Replacement of existing M30x1.5 radiator valves with 1/2" connections
Systems requiring automatic balancing and per-radiator temperature control
Key specifications
Connection type: 1/2" threaded radiator connection
Spindle thread for thermostatic head: M30x1.5
Function: thermostatic flow control for hot-water radiators
Application medium: heating water (hot-water heating systems)
Mounting: direct connection to radiator valve inlet or return
Control: compatible with manual and programmable thermostatic heads
How to use
Install the valve in place of an existing radiator valve or during new radiator installation, ensuring the 1/2" threaded connection is sealed and tightened according to installation torque recommendations. Fit a compatible M30x1.5 thermostatic head onto the valve spindle to set the desired room temperature. The valve operates automatically: as the thermostatic head senses temperature changes, it modulates the valve opening to regulate flow and maintain the setpoint. Periodic inspection during routine heating system maintenance is advised to check for leaks and ensure correct operation of the head and spindle.
Usage recommendations
Use the valve with thermostatic heads rated for radiator applications and avoid exposure to aggressive fluids. During system filling and flushing, protect the valve from debris; consider installing a filter or dirt separator upstream. For best energy performance, balance the heating system and set thermostatic heads according to room usage and occupancy patterns.

## FAQ

### How much does the Thermostatic valve DANFOSS Redia M30x1.5 015G5121 cost, and is it available for purchase?

The price is 15.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 485 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 02.07.2026 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: Cash payment, 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 DANFOSS 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 DANFOSS 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/11553700/66553922_large.webp