-inch thread for both the shower mixer/tap and the showerhead. : Uses
-inch BSP (British Standard Pipe), often referred to as a thread. Unlike NPT, these are usually straight (parallel) threads that rely on a rubber washer or gasket to prevent leaks. Common Exceptions to the Rule
-inch NPT (National Pipe Thread), which is a tapered thread designed to create a watertight seal as it is tightened. : Generally use
-inch thread for both the shower mixer/tap and the showerhead. : Uses
-inch BSP (British Standard Pipe), often referred to as a thread. Unlike NPT, these are usually straight (parallel) threads that rely on a rubber washer or gasket to prevent leaks. Common Exceptions to the Rule
-inch NPT (National Pipe Thread), which is a tapered thread designed to create a watertight seal as it is tightened. : Generally use
