The McAlpine MA15 is a 135° nozzle designed for connection to a 1" BSP (British Standard Pipe) thread. BSP is a type of thread used in plumbing and is commonly found in the UK and other countries that use British standards.The MA15 nozzle is designed to provide a reliable and leak-free connection between a plumbing system and a waste pipe. The nozzle is made from high-quality materials and features a durable construction that is resistant to corrosion and wear.To install the MA15 135° nozzle, the waste pipe is first prepared by cutting it to the required length and deburring the edges. The nozzle is then inserted into the 1" BSP thread of the plumbing system, creating a secure and reliable connection between the two pipes.Overall, the McAlpine MA15 135° nozzle is a high-quality plumbing component that is designed to provide reliable and long-lasting performance in a wide range of plumbing applications. Its compatibility with 1" BSP threads makes it a versatile component that can be used in many different plumbing systems.・ Nozzle will connect to 1" BSP Thread・ Can accept discharge from a washing or dishwashing machine・ Supplied with Blank Plug・ Manufactured in polypropylene.