# 3-way Thermostatic Mixing Valve Sourcing R157A D25 60°C Kvs 3.2

**URL:** https://aio.lv/en/product--sourcing-r157ay053--12398295
**Data updated:** 2026-04-27 22:31 (EEST)
**Category:** Kitchen & Bathroom Faucets
**Manufacturer:** Sourcing
**Manufacturer code:** R157AY053
**EAN:** 8009902291082
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 73.99 €
**Prices and availability valid until:** 2026-07-25 23:59
**Price without VAT (21%):** 61.15 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sourcing-r157ay053--12398295

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

3-way thermostatic mixing valve Sourcing R157A (D25) with fixed 60°C setpoint and Kvs 3.2. Designed to blend hot and cold water to maintain stable outlet temperature, it suits domestic hot water systems, heating circuits and safety mixing for showers or taps. Mechanical thermostatic control ensures reliable temperature regulation without electronics.

## Long description

The 3-way Thermostatic Mixing Valve Sourcing R157A D25 60°C Kvs 3.2 is a mechanical thermostatic valve designed to blend hot and cold water and deliver a stable fixed outlet temperature of 60°C. Built for use in domestic hot water systems, heating circuits and safety mixing for showers or taps, this valve provides automatic temperature control without the need for electrical power or electronic controllers. The compact D25 body and Kvs 3.2 flow coefficient enable predictable flow behavior and straightforward integration into existing plumbing installations.
Advantages
This thermostatic mixing valve offers consistent temperature regulation at a fixed 60°C setpoint, reducing the risk of scalding and ensuring predictable supply temperature for downstream fixtures. Its mechanical operation provides reliable performance in environments where electrical control is impractical or undesirable. The Kvs 3.2 rating supports moderate flow rates typical for domestic and light commercial applications, while the 3-way design allows safe diversion or mixing arrangements depending on system configuration.
Suitable for
 Domestic hot water systems requiring a stable 60°C supply
 Heating circuits where a fixed blending temperature is needed
 Safety mixing for showers, taps or sanitary outlets to limit scalding
 Installation where mechanical, non-electrical temperature control is preferred
When it may not be suitable
The valve is designed with a fixed 60°C setpoint and therefore is not suitable where adjustable outlet temperature is required. Systems that demand variable temperature control, precise electronic modulation, or integration with a building management system will require a different thermostatic or electronically controlled mixing device. Additionally, for very high flow-rate applications beyond the capacity implied by Kvs 3.2, a larger valve or multiple parallel valves should be considered.
Key specifications
 Function: 3-way thermostatic mixing valve (hot/cold blend)
 Body size: D25 (nominal 25 mm connection)
 Fixed outlet temperature: 60°C
 Kvs (flow coefficient): 3.2
 Operation: Mechanical thermostatic control, no electrical power required
 Typical applications: domestic hot water, heating circuits, safety mixing for sanitary outlets
How to use
Install the valve in accordance with local plumbing codes and the system schematic so that the hot and cold inlets are connected to their respective supply lines and the mixed outlet feeds the downstream fixtures. Ensure correct pipe orientation and secure connections to avoid leaks. Flush the lines prior to commissioning to remove debris. After installation, verify the outlet temperature at the point of use to confirm the 60°C setpoint. Periodically inspect and maintain the valve according to the manufacturer's maintenance guidelines to ensure uninterrupted thermostatic performance.
What to consider before purchase
 Confirm the required outlet temperature is 60°C and fixed operation meets system needs
 Verify flow requirements against a Kvs 3.2 rating to ensure adequate capacity
 Check compatibility with pipe size D25 and connection type used in the installation
 Assess whether mechanical thermostatic control (no electronics) is acceptable for the application
Usage recommendations
For safe and reliable operation, fit the valve with appropriate commissioning checks: flush the system before installation, fit strainers if the supply contains particulates, and include shut-off valves for future servicing. If required by local regulations, combine the valve with secondary temperature-limiting or mixing devices as part of a comprehensive scald-prevention strategy.

## FAQ

### How much does the Sourcing R157A 3-way thermostatic mixing valve cost, and is it available for purchase?

The price is 73.99 € (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 16.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Sourcing R157A 3-way thermostatic mixing valve be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 Sourcing 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 Sourcing 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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