# Giacomini R157A 3-Way Thermostatic Mixing Valve, DN25, 60°C, Kvs 3.2

**URL:** https://aio.lv/en/product--oem-r157ay053--12411545
**Data updated:** 2026-05-11 23:30 (EEST)
**Category:** Other goods
**Manufacturer:** OEM
**Manufacturer code:** R157AY053
**EAN:** 8009902291082
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The Giacomini R157A is a high-quality 3-way thermostatic mixing valve designed for precise temperature control in heating and domestic hot water systems. Featuring a DN25 connection size and a fixed temperature setting of 60°C, this valve ensures optimal thermal regulation with a Kvs value of 3.2. It is engineered for reliability and efficient flow management in residential and commercial hydronic installations.

## Long description

The Giacomini R157A 3-way thermostatic mixing valve is a precision-engineered component designed for reliable temperature regulation in heating and domestic hot water systems. With a fixed outlet temperature of 60°C and a DN25 connection size, this valve provides consistent thermal control, ensuring safety and efficiency in hydronic installations. Its robust construction and Kvs value of 3.2 make it an ideal solution for maintaining stable water temperatures in residential and commercial plumbing networks.
Advantages
This thermostatic mixing valve offers exceptional thermal stability, preventing temperature fluctuations that can occur in complex heating circuits. The fixed 60°C setting is specifically calibrated to balance comfort and safety, reducing the risk of scalding while maintaining efficient heat distribution. Its high-quality materials ensure long-term durability and resistance to corrosion, while the optimized flow capacity allows for seamless integration into various hydronic systems without compromising pressure.
Suitable for
Domestic hot water distribution systems
Central heating circuits
Solar thermal installations
Residential and commercial hydronic heating
This valve is not suitable for applications requiring adjustable temperature ranges, as it is factory-set to a fixed 60°C. It should not be used in systems where the required flow rate significantly exceeds the Kvs 3.2 capacity, as this may lead to excessive pressure drops or inefficient thermal regulation.
Key specifications
Connection size: DN25
Fixed temperature setting: 60°C
Flow coefficient: Kvs 3.2
Type: 3-way thermostatic mixing valve
Installation should be performed by a qualified professional to ensure all connections are properly sealed and the valve is oriented correctly according to the flow direction indicators. The valve is typically installed at the point of use or at the storage tank outlet to regulate the mixed water temperature effectively. Ensure that the system is flushed of debris before installation to prevent internal blockages.
What to consider before purchase
Verify that the DN25 connection size matches your existing pipework
Confirm that a fixed 60°C output meets your specific system requirements
Check that the Kvs 3.2 flow capacity is sufficient for your system's demand
For optimal performance and longevity, it is recommended to install a filter upstream of the valve to protect the internal thermostatic element from sediment and impurities. Regularly inspect the system for signs of scale buildup, especially in hard water areas, to maintain consistent temperature control.

## FAQ

### What payment options are available?

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### 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 OEM 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 OEM 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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