Dixon 21MP-R50 Stainless Steel 316L Sanitary Fitting, Clamp Adapter, 1/2" Tube OD x 1/2" NPT Male Adapter fitting for connecting pipes or tubes of different types Tube connection on one end and male NPT threaded connection on the other Stainless steel 316L for strength and greater ease in welding than 304-grade steel Maximum operating pressure rating of 250 psi at 70 degrees F ambient temperature