Brass coupling Valvex 5/4" 70.4915500 – plumbing connector 5/4 inch

Brass coupling Valvex 5/4" 70.4915500 is a threaded plumbing connector produced by Valvex for joining pipes or fittings with a 5/4-inch thread. Constructed from brass, the coupling is intended for use in water and heating systems where a durable, corrosion-resistant threaded joint is required. The component fits standard 5/4" threaded pipes and is suitable for repair, replacement or incorporation into new plumbing assemblies.

Advantages

The brass construction provides good resistance to corrosion and long-term mechanical durability compared with many alternative materials. Threaded connections allow straightforward assembly and disassembly without special tools, enabling easy maintenance and replacement. Designed to match standard 5/4" pipe threads, the coupling ensures a tight mechanical fit and reliable sealing when installed with appropriate sealing materials.

Suitable for

• Joining 5/4" threaded pipes in domestic water supply systems
• Connections in central heating installations where a threaded coupling is needed
• Repairs and replacements of existing threaded fittings
• Use in new plumbing assemblies requiring brass threaded connectors

Key specifications

• Material: brass for corrosion resistance and mechanical strength
• Thread size: 5/4" standard pipe thread
• Type: threaded coupling for pipe-to-pipe or pipe-to-fitting connections
• Intended media: water and heating fluids compatible with brass
• Operating environment: indoor plumbing and heating systems

How to use

Ensure both mating threads are clean and free of debris or old sealing compound. Apply an appropriate thread sealant or PTFE tape to the male thread following the sealant manufacturer's instructions. Hand-start the coupling onto the mating thread and tighten using suitable wrenches until a secure mechanical joint is achieved; avoid excessive torque that could damage threads or deform the coupling. After assembly, pressurize the system and check the connection for leaks, retightening slightly if necessary.

Usage recommendations

Use compatible sealing materials rated for potable water or heating systems. Inspect threads for damage before installation and replace the coupling if visible wear or deformation is present. For systems operating at elevated temperatures or pressures, confirm material compatibility and applicable system ratings before installation.