Model DA1 Rev E Pressure Reducing Regulator; 3/4" Line Size; Hastelloy C Body With Stainless Steel Spring Chamber; HD Hastelloy Trim, GF-TFE Seat, Fluorocarbon Diaphragm, Fluorocarbon Static Seal, Hastelloy/PTFE U-Cup Dynamic Seal; NPT End Connections; 10-35 PSIG Range Spring; Internal Sensing