Home / Aztec / DOUBLE BLOCK AND BLEED VALVE (MODEL NO. DBB-FBNNF) DOUBLE BLOCK AND BLEED VALVE (MODEL NO. DBB-FBNNF) Category: Aztec Related products SEPERATELY MOUNTED FIVE VALVE MANIFOLD 5VMS HIGH PRESSURE INSTRUMENT BALL VALVE IBV SERIES DOUBLE BLOCK VALVE, FLANGE X FLANGE (MODEL NO. DB-FBNF) DOUBLE BLOCK VALVE, FLANGE X THREAD (MODEL NO. DB-FBNT)