# Connection set Hewalex ZPKS 1 DN16 for solar thermal systems, DN16 pipe connection

**URL:** https://aio.lv/en/product--hewalex-hsa123401a--11829323
**Data updated:** 2026-03-09 14:38 (EET)
**Category:** Other goods
**Manufacturer:** Hewalex
**Manufacturer code:** HSA123401A
**EAN:** 5902023519925
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 37.49 €
**Prices and availability valid until:** 2026-08-22 23:59
**Price without VAT (21%):** 30.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hewalex-hsa123401a--11829323

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.08.2026 | free |
| Pickup points | 11.08.2026 | 1.79 EUR |
| Courier delivery to door | 11.08.2026 | 4.99 EUR |

## Summary description

Hewalex ZPKS 1 DN16 connection set designed for solar thermal and hydronic installations. The set provides DN16 (16 mm) pipe connections and fittings for linking collectors, heat exchangers or circulation circuits. Intended to simplify mounting, ensure leak-tight joins and enable integration of sensors or valves where required in domestic or small commercial solar heating systems.

## Long description

The Hewalex ZPKS 1 DN16 connection set is designed for solar thermal and hydronic installations where DN16 piping is used. The set contains fittings and connectors intended to facilitate the connection of solar collectors, heat exchangers and circulation circuits. Components are selected to provide secure, leak-tight joints and to allow integration of sensors or control valves when required in domestic or small commercial solar heating systems.
Advantages
The connection set simplifies installation by providing matched fittings for DN16 pipework, reducing the need to source multiple individual components. It supports reliable hydraulic connections suitable for closed-loop solar thermal circuits and is compatible with common copper, stainless steel or PEX piping systems of the same nominal diameter. The design allows for straightforward integration of temperature sensors and shut-off or balancing valves, helping to maintain system performance and serviceability.
Suitable for
 Connecting solar collectors to the circulation loop in domestic solar thermal systems
 Linking heat exchangers or DHW (domestic hot water) circuits using DN16 piping
 Small commercial solar installations and hydronic heating circuits with DN16 lines
 Retrofit or replacement of existing DN16 connections in collector arrays
Key specifications
 Nominal pipe diameter: DN16 (16 mm)
 Set type: connection/fitting set for solar thermal systems
 Intended use: closed-loop solar thermal and hydronic circuits
 Compatibility: fittings for common DN16 pipe materials (copper, stainless steel, PEX) when appropriate adapters are used
 Functionality: enables integration of sensors and valves within the connection points
How to use
Install the Hewalex ZPKS 1 DN16 connection set as part of the collector circuit following applicable plumbing and solar installation practices. Select compatible DN16 tubing and prepare pipe ends according to the chosen connection method (compression, soldering or press-fit where applicable). Assemble the fittings to create leak-tight joints, position sensors or valves in the provided ports if required, and pressure-test the circuit before commissioning. Follow local regulations and the solar system designer's instructions for proper flow direction and thermal insulation of exposed pipework.
Usage recommendations
Use corrosion-resistant pipe materials and maintain thermal insulation around external runs. Verify compatibility of the set's connection type with your pipe material and, if necessary, use manufacturer-recommended adapters. Perform pressure and leak tests after installation and incorporate accessible shut-off valves to facilitate future maintenance.

## FAQ

### How much does the Hewalex ZPKS 1 DN16 connection set cost, and is it available for purchase?

The price is 37.49 € (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 06.08.2026 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 Hewalex 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 Hewalex 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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