Connector fitting SiGMA-Li MP2534 mufa with half-union 25x3/4"

SiGMA-Li MP2534 mufa with half-union 25x3/4" is a connector fitting designed to join a 25 mm pipe to a 3/4" threaded element. It provides a mechanical transition between metric pipe systems and BSP/imperial threaded components, allowing secure connection in plumbing and heating installations. The fitting is intended for use where a reliable thread-to-pipe interface is required without altering the existing piping layout.

Advantages

The connector creates a stable mechanical connection between a 25 mm pipe and a 3/4" threaded fitting, minimizing the need for additional adaptors. Its half-union design facilitates installation and disassembly by allowing the threaded element to be separated from the pipe without rotating the entire piping. The fitting supports straightforward alignment and reduces the risk of leaks when properly installed with appropriate sealing materials.

Suitable for

• Plumbing systems requiring a transition from 25 mm pipe to 3/4" threaded components
• Heating installations and radiators that use mixed metric and imperial connections
• Repair or retrofit work where replacing entire piping is impractical
• Piping connections in residential and light commercial applications

Key specifications

• Connection types: 25 mm pipe interface and 3/4" threaded interface
• Design: half-union (semi-coupling) for separable threaded connection
• Application: mechanical transition between metric pipe and BSP/imperial thread
• Typical installation environment: plumbing and heating systems

How to use

Prepare the pipe end by cutting it square and deburring to ensure a flush fit. Assemble the fitting onto the 25 mm pipe according to the manufacturer's assembly method for the pipe material (e.g., compression, push-fit, or soldered joint as appropriate). Apply appropriate thread sealant (PTFE tape or liquid sealant) to the 3/4" threaded element, then engage the half-union and tighten to the recommended torque for the materials involved. Verify alignment and check for leaks under pressure following installation.

Usage recommendations

Use compatible sealing materials for the threaded connection and follow local plumbing codes. Ensure the fitting is used within the pressure and temperature limits of the connected system and avoid excessive torque during assembly to prevent damage to threads or the union. Periodically inspect the joint for signs of leakage or corrosion.