Qick port, 1" swivel x 3/4" barb, brass, pex manifold extra large adapter, used in pex hot & cold water plumbing applications, use to transition from pex to 1" male pipe threads, pressure rated at 160 psi at 73 degrees fahrenheit, 100 psi at 180 degrees fahrenheit & 80 psi at 200 degrees fahrenheit, listed by nsf as complying with the following standards: nsf/ansi standard 14, nsf/ansi standard 61 including annex g, astm f877, csa b137.5 & astm f1807.