The DBB (Double Block & Bleed) features of the valve or valve is the ability to segregate two pressure sources and to bleed / vent pressure in the void between the two sealing elements.
| Carbon Steel |
ASTM A216 - WCB or Equivalent ASTM A105N or Equivalent |
| Low Carbon Steel | ASTM A350 - LF2 or Equivalent |
| Duplex Stainless Steel | ASTM A182 - F51, F53, F55 or Equivalent |
| Stainless Steel | ASTM A182 - F304, F304L, F316, F316L or Equivalent |
| Special Alloy Steel |
Inconel 625, 825 or Equivalent Hastelloy C Monel or Equivalent |