Home / Aztec / DOUBLE BLOCK VALVE, FLANGE x FLANGE (MODEL NO. DB-FBBF) DOUBLE BLOCK VALVE, FLANGE x FLANGE (MODEL NO. DB-FBBF) Category: Aztec Related products DOUBLE BLOCK VALVE, FLANGE X THREAD (MODEL NO. DB-FBBT) SEPERATELY MOUNTED THREE VALVE MANIFOLD 3VMS SINGLE BLOCK AND BLEED VALVE, FLANGE x THREAD (MODEL NO. SBB-FBNT) DOUBLE BLOCK AND BLEED VALVE, FLANGE X FLANGE (MODEL NO. DBB-FBNBF)