Connect the nozzles and tube with which can work under 3000psi with material stainless steel 304 ; and the nuts were well plating siler inside;

The fitting are for connecting two 1/2" Flexible Tubing and 1/8-27NPT Nozzle in the Center to make a high pressure mist line.

We can also supply the seats matching for the the above nozzles with your drawing ;