Model "HP-1+6+S" Diff. Press Reducing Regulator For Nace Service; 1-1/2" Size; Cf8m Body & Spring Chamber; S40t Trim: 316SST Cylinder,316SST Plug With Tfe Seat,Fluorocarbon;Elastomer Diaphragm; Opt-30: 600 Lb Raised Face Flanges; 15-40 PSId Range Spring (Inconel X750); Per SPQ/MA Drawing Number 32907 with TFE Diaphragm Covers