Model DA1 Rev E Pressure Reducing Regulator; 1-1/4" Line Size; Carbon Steel Body With Carbon Steel Spring Chamber; PG 17-4PH Stainless Steel Trim, 316L Stainless Steel Cage, GF-TFE Seat, Gylon 3-Ply Diaphragm, RTFE Static Seal, Piston Ring Assembly And Wiper Dynamic Seal; NPT End Connections; 15-45 PSIG Range Spring; Internal Sensing