Prima Plus Compression Adaptor - 15mm x 3/8" Male

WRAS approval signifies that the product has been scrutinized by the Water Regulations Advisory Scheme and meets the highest standards for use in contact with drinking water in the UK. It ensures the material will not leach harmful substances.

You need this adaptor if you are connecting a 15mm pipe to a fitting that has a 3/8" Male BSP *thread*. Remember, a 3/8" BSP thread measures approximately 5/8" (around 16mm) in diameter. If your male thread measures exactly 3/8" in diameter, you need a 1/8" BSP fitting.

Yes, Prima Plus compression fittings are suitable for low-pressure gas installations, provided they comply with all relevant gas regulations for your specific application and location.

You will typically need two adjustable wrenches. One wrench is used to hold the body of the compression fitting steady, while the other is used to tighten the compression nut.

BSP (British Standard Pipe) threads are often specified by a nominal size that does not directly correspond to their physical diameter. For example, a 3/8" BSP thread has an actual outside diameter of approximately 5/8" (around 16mm). Always check the physical diameter if unsure.

This specific fitting is designed for copper pipes. For use with plastic pipes, you would typically need a fitting with an insert and a different type of compression or push-fit connection that is compatible with the specific plastic pipe material.

Ensure the pipe is fully inserted into the fitting and the compression nut is tightened sufficiently. Check that the olive is seated correctly and not damaged. If the leak persists, consider dismantling and reassembling, ensuring the pipe end is clean and square.

Verify that the correct size fitting is being used and that there are no cross-threads. Ensure the pipe is round and free from damage. Do not force the fitting; check for obstructions.

While brass is durable, aggressive water conditions or chemicals can cause corrosion. Ensure the water quality is within acceptable parameters and avoid direct contact with corrosive substances.