MODEL NO: AS-102-YOKEBALANCED DIAPHRAGMBalanced diaphragm design delivers superiorbreathing performance even at increased depths.Made with corrosion resistant marine brass,chrome plated finish.Ventilation rate ( air supply / 3000 psi ) : 135 SCFM.Intermediate pressure: 135-145 psi. ( 9.5-10.2 bar )High pressure port: ( 7/16"-20 UNF ) x 2Low pressure port: ( 3/8"-24 UNF ) x 4 plus swiveling turretYoke.Weight:950g