NP1/4Male-NPT1/4Male 90 Degree Elbow. NPT1/4 does not represent the diameter of the pipe, but is a thread specification that is suitable for most American threads. Shaped like a tobacco pipe, Can be used in sensor extenders and pressure washers. Made of stainless steel 304. The working pressure is 2800 Psi. NPT1/4 Male - NPT1/4 Male,This is a forged elbow made of 304 stainless steel, suitable for connecting pipes that are not at the same height or plane, and can be used in sensor extenders or high-pressure cleaning equipment.