Home / Aztec / DOUBLE BLOCK AND BLEED VALVE, FLANGE X THREAD (MODEL NO. DBB-FBNBT) DOUBLE BLOCK AND BLEED VALVE, FLANGE X THREAD (MODEL NO. DBB-FBNBT) Category: Aztec Related products DOUBLE BLOCK AND BLEED VALVE (MODEL NO. DBB-FBNNF) MONOFLANGE MANIFOLD VALVE SEPERATELY MOUNTED THREE VALVE MANIFOLD 3VMS SEPERATELY MOUNTED FIVE VALVE MANIFOLD 5VMS