# 3-way distribution valve Herz CALIS TS RD (model 1776140) for heating systems

**URL:** https://aio.lv/en/product--herz-1776140--11835888
**Data updated:** 2026-03-09 14:49 (EET)
**Category:** Other goods
**Manufacturer:** Herz
**Manufacturer code:** 1776140
**EAN:** 9004174759901
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 41.49 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 34.29 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--herz-1776140--11835888

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

Herz CALIS TS RD is a 3-way distribution valve designed for heating systems. This valve directs flow between circuit branches and enables mixing or diverting of heating media. Suitable for use in central heating, radiator and underfloor heating manifolds, it supports reliable flow control and system balancing where a three-way diversion or mixing function is required.

## Long description

Herz CALIS TS RD is a 3-way distribution valve designed for heating systems to direct and combine flow between circuit branches. Intended for mixing or diverting heating media, the valve supports reliable flow control in central heating, radiator and underfloor heating manifolds. The compact brass body and thermostatic-compatible design provide consistent hydraulic performance where a three-way diversion or mixing function is required.
Advantages
The valve offers precise flow direction and stable mixing behavior to help maintain set temperatures and balance between heating circuits. Its robust construction ensures long service life under standard heating system conditions and reduces the need for frequent adjustments. Designed for integration with common actuators and controllers, the valve simplifies system assembly and maintenance while providing predictable hydraulic characteristics.
Suitable for
 Central heating distribution systems
 Radiator manifolds requiring diversion or mixing
 Underfloor heating manifolds for temperature control
 Hydronic systems needing three-way flow control
Key specifications
 Type: 3-way distribution valve with mixing/diverting function
 Body material: brass (suitable for heating media)
 Connection type: manifold-compatible fittings for hydraulic installation
 Control compatibility: designed for use with standard zone actuators and thermostatic elements
 Application: closed-loop hydronic heating systems including radiators and underfloor circuits
How to use
Install the valve in the manifold or piping layout following system hydraulic schematics, ensuring correct orientation for mixing or diverting flow. Connect to the actuator or thermostatic head if automatic control is required, and verify tight mechanical connections and sealing. Commissioning should include system flushing to remove debris, gradual pressurization and functional checks to confirm proper diversion or mixing performance and absence of leaks.
Usage recommendations
Use the valve within recommended heating system parameters, avoid exposure to aggressive fluids, and follow manufacturer guidance when selecting compatible actuators. Periodic inspection during scheduled maintenance is advised to confirm leak-tightness and proper actuator operation.

## FAQ

### How much does the 3-way distribution valve Herz CALIS TS RD 1776140 cost, and is it available for purchase?

The price is 41.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 15.07.2026 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

https://aio.lv/img/cache/product/11835888/67235623_large.webp