STANDARD MATERIALS OF CONSTRUCTION
Body: A216-WCC with ENP Bonnet/Lower plate: ASTM A216 WCC Plug/stem: A216 WCC with ENP Slips: A395-40-18 Packing Gland: A487-CA6NM or A36 Plate Packing/Gaskets: Flexible Graphite Studs: A193 B7 Nuts: A194 2H O-Rings & Slip Seals Viton B Standard (other Elastomers available) Relief system: AISI 316 SS OmniSeal DB&B expanding plug valves are also available in a variety of alternate configurations or materials of construction depending on customer preferences, specifications or service conditions.