Brass Union Fitting Purmo RS-MUFA 1/2 for Radiator Connection M-2

Purmo RS-MUFA 1/2 is a brass union fitting for radiator connection, designed for the M-2 radiator inlet. The fitting creates a secure mechanical link between a radiator valve or pipework and the radiator inlet using a 1/2" threaded connection. Manufactured from brass, the union fitting offers corrosion resistance and mechanical durability suitable for central heating installations and radiator replacement or retrofit tasks.

Advantages

The brass construction ensures long-term resistance to corrosion and wear in hot-water heating systems. Its 1/2" threaded interface provides compatibility with common radiator valves and piping standards, enabling straightforward mechanical connection without soldering. The compact union design facilitates disassembly and reassembly during maintenance or radiator replacement, minimizing the need to drain entire heating circuits.

Suitable for

• Connection of radiators to existing 1/2" valves and pipes
• Radiator replacement or retrofit projects in central heating systems
• Maintenance tasks requiring temporary disconnection of a radiator
• Installations where a durable, corrosion-resistant mechanical joint is required

Key specifications

• Material: brass for corrosion resistance and strength
• Connection type: 1/2" threaded union compatible with standard radiator inlet fittings
• Design: compact union fitting for mechanical join between valve/pipework and radiator inlet
• Application: hot-water central heating radiator connections and retrofit use

How to use

Fit the Purmo RS-MUFA 1/2 by threading the union onto the radiator inlet and tightening it to the corresponding 1/2" valve or pipe thread. Ensure sealing surfaces and any included gasket or sealing element are correctly positioned before final tightening. For installations under pressure, follow standard procedures for isolating and draining the section of the system when necessary, and torque connections to manufacturer-recommended levels to avoid leaks while preventing over-tightening that could damage threads.

Usage recommendations

Use appropriate sealing materials where required and verify compatibility with valve and pipe materials. During installation or maintenance, isolate and depressurize the heating circuit as needed and check for leaks after refilling and reheating the system.