Aluminum 1 1/2" Female BSP to 1 1/2" Male NPT Female Size_4 1/2 Inch Lock Lever is an investment

Lock Lever is an investment casting of 304 stainless steel ASTM A743

for example

The male side of this adapter will only connect to 1 1/4 inch female camlock

Drinking Water

Aluminum 1 1/2" Female BSP to 1 1/2" Male NPT Female Size_4 1/2 Inch Lock Lever is an investmentBritish Standard Pipe (BSP) can be most commonly found in Canada, UK, Europe, Asia and Australia. It is a finer thread than National Pipe Thread (NPT), and will not seal properly if used in conjunction with it. Two types of threads are used: British Standard Pipe Taper (BSPT) and British Standard Pipe Parallel (BSPP). British Standard Pipe Taper uses a tapered thread system, and sealant is provided to help secure the male and female connection.