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

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.