2B4-5S3K-NBD

Model D Rev D Pressure Reducing Regulator For General Service; 1/2" Line Size; Sales Kit B; Carbon Steel Body And Spring Chamber; S3 Trim: 316 Stainless Steel With PTFE Seat And Neoprene (BC) Diaphragm; OPT-56: Cleaned For Non-Oxygen Service Per Cashco Specification S-1542