Material: Brass
Colour:  Brass
Angle: 90 Degrees
Compression 90 degree Wall Plate Elbow with female thread.  Supplied with a pre-loaded olive in the compression nut. Suitable for hot and cold water systems.  
Compression fittings are useful when working in conditions that are not suitable for soldering. 
A 
compression backplate elbow is a specific type of plumbing fitting that allows a pipe to turn a 90° corner and be securely fixed to a wall or another flat surface, all without needing heat or soldering. 
Key Function and Use Cases
The primary feature of this fitting is the integrated "backplate" with screw holes, which is designed to be mounted flush against a surface, providing stability and support for exposed pipework or fixtures. 
Common applications include:
Fixing Taps to Walls: They are often used to provide a stable connection point for bib taps or other wall-mounted faucets.
Exposed Pipework in Bathrooms/Kitchens: The fitting fixes the pipe securely as it exits the wall (or before the final fixture is attached), which can be particularly useful for installations where a neat, show-ready finish is required. Some models even come in chrome finishes for aesthetic purposes.
Central Heating and Hot/Cold Water Systems: They are suitable for various domestic water and heating applications, providing a reliable and secure mechanical joint. 
Advantages
Secure Mounting: The backplate ensures the connected pipe and any attached fixture are robustly held in place and not subject to movement or dynamic stresses that might cause a standard compression elbow to fail over time.
Heat-Free Installation: Like other compression fittings, they eliminate the need for a soldering torch, enhancing safety and convenience, especially in areas with limited space or where fire hazards are a concern.
Ease of Use: Only normal tools (wrenches/spanners) are required for assembly, making them accessible for a range of users. 
Product Specifications
These fittings are typically made of brass for durability and corrosion resistance. Common sizes include: 
Pipe Connection: 15mm or 22mm compression end to fit standard copper or plastic (with an insert) pipework.
Threaded Outlet: A 1/2-inch or 3/4-inch Female British Standard Pipe (BSP) thread for connecting to taps or other threaded components.