# Angled radiator valve set ARCO KCM21, supply + return, 1/2 x 16 mm for multilayer pipes, polished chrome (503555 + 507555)

**URL:** https://aio.lv/en/product--arco-kcm21--11699985
**Data updated:** 2026-03-08 08:45 (EET)
**Category:** Heating Radiators
**Manufacturer:** ARCO
**Manufacturer code:** KCM21
**EAN:** 8428519068014
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 27.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 23.13 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--arco-kcm21--11699985

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

Angled radiator valve set ARCO KCM21 includes supply and return valves designed for radiator connections to multilayer (PEX-aluminium-PEX) pipes with 1/2 x 16 mm dimensions. Finished in polished chrome, the set suits conventional radiator installations, enabling flow control and shutoff at the inlet and outlet. Useful for heating system maintenance, replacements and new installations.

## Long description

Angled radiator valve set ARCO KCM21 includes a pair of angled supply and return valves designed for connecting radiators to multilayer (PEX‑aluminium‑PEX) pipes with a 1/2 x 16 mm connection. The set is finished in polished chrome and provides shutoff and flow control at the radiator inlet and outlet. It is intended for conventional radiator installations and is suitable for replacement, maintenance or new heating system projects where a compact angled valve connection is required.
Advantages
The polished chrome finish offers a corrosion‑resistant surface that is easy to clean and integrates with modern heating fixtures. The angled configuration minimizes installation depth behind the radiator and simplifies alignment with 1/2 x 16 mm multilayer piping. Supplied as a matched supply and return pair, the set allows individual isolation of the radiator for maintenance without needing to drain the entire heating circuit. Materials and dimensions correspond to common radiator and multilayer pipe standards to ensure compatibility with existing fittings.
Suitable for
 Connecting panel and column radiators to multilayer (PEX‑aluminium‑PEX) piping with 1/2 x 16 mm dimensions
 Replacement of existing angled radiator valves in residential or light commercial heating systems
 New radiator installations where compact, angled connections are required
 Situations requiring isolation of individual radiators for service or maintenance
Key specifications
 Valve type: angled supply and return valve pair
 Connection size: 1/2 x 16 mm for multilayer (PEX‑aluminium‑PEX) pipes
 Finish: polished chrome
 Functionality: flow control and shutoff at radiator inlet/outlet
 Compatibility: designed for standard radiator fittings and multilayer pipe systems
How to use
Install the angled valves at the radiator inlet and outlet according to the radiator manufacturer's instructions and local plumbing codes. Prepare the multilayer pipe ends and attach using compatible compression fittings or crimp systems suitable for 1/2 x 16 mm multilayer pipe. Tighten connections to the recommended torque values for the chosen fittings. Use the valves to regulate flow into the radiator or fully shut off the radiator for service. After installation, pressure test the heating circuit and inspect all joints for leaks before returning the system to full operation.
Usage recommendations
Use with appropriate compression or crimp fittings specified for 1/2 x 16 mm multilayer (PEX‑aluminium‑PEX) pipe; verify compatibility with the radiator tailpiece and follow pressure testing and commissioning procedures to ensure leak‑tight installation.

## FAQ

### How much does the Angled radiator valve set ARCO KCM21 cost, and is it available for purchase?

The price is 27.99 € (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 07.07.2026 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 ARCO 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 ARCO 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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