# Angle four-way valve Herz VUA 40 1/2" (model 1778441) – hydraulic mixing/diverting valve

**URL:** https://aio.lv/en/product--herz-1778441--11270846
**Data updated:** 2026-03-07 19:56 (EET)
**Category:** Heating Radiators
**Manufacturer:** Herz
**Manufacturer code:** 1778441
**EAN:** 9004174723001
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 42.49 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 35.12 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--herz-1778441--11270846

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

Herz VUA 40 is an angle four-way valve with 1/2" connections (MPN 1778441, EAN 9004174723001) designed for hydraulic mixing and diverting duties in heating and cooling systems. The valve serves to blend or redirect flow between circuits, enabling temperature control, circuit balancing and system switching in radiators, boilers, heat pumps and HVAC installations.

## Long description

Herz VUA 40 1/2" is an angle four-way valve engineered for hydraulic mixing and diverting tasks in heating and cooling systems. With compact 1/2" connections and an angle-body design, the valve allows controlled blending or redirection of fluid between supply and return circuits to support temperature regulation, circuit switching and system balancing in radiators, boilers, heat pumps and HVAC installations.
Advantages
The valve design provides reliable mixing and diverting performance while occupying minimal installation space. Its angle configuration simplifies piping layout in tight installations and helps reduce pressure losses compared with more complex assemblies. Constructed for integration into hydronic systems, the valve supports stable temperature control and straightforward operation when combined with actuators and control components.
Suitable for
 Mixing supply and return flows to achieve target heating or cooling temperatures
 Diverting flow between two circuits or switching sources (for example, boiler to heat pump)
 Zoning and balancing of domestic radiators and underfloor heating loops
 Integration into commercial HVAC systems for temperature control and system switching
Key specifications
 Connection type: angle-body with 1/2" threaded connections
 Function: four-way mixing and diverting valve
 Application: hydraulic mixing/diverting in heating and cooling circuits
 Compatibility: suitable for integration with standard actuators and hydronic control components
 Installation orientation: angle configuration for compact piping arrangements
How to use
Install the valve into the hydronic piping according to system design, ensuring correct orientation of supply, return and circuit ports. Mount an appropriate actuator or control device compatible with the valve to enable automated positioning for mixing or diverting tasks. Commission the system by checking for leaks, verifying port identification, and adjusting control signals so the valve directs flow and blends temperatures as intended. Follow local regulations and best practices for pressure testing and flushing before putting the system into service.
Usage recommendations
Use the valve with compatible actuators and controls rated for the system’s operating pressure and temperature. To maintain performance, carry out periodic inspection for leaks and scaling, and ensure the hydraulic system is clean and properly filtered to avoid debris-related wear.

## FAQ

### How much does the Herz VUA 40 1/2" angle four-way valve cost, and is it available for purchase?

The price is 42.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 30 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 09.07.2026 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 Herz 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 Herz 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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