DBB3 Series: Monoflange Double Block & Bleed Valves

IntroductionHikelok unique combination of double block and bleed valve systems enable a smooth transition from the process piping systemto instrumentation, providing fewer potential leak points, lower installed weight, and a smaller space envelope. Block and Bleed Valves are designed for process piping isolation points,direct mount to instruments,close coupling of instruments,double block and bleed isolation,vents and drains
FeaturesMaximum working pressure up to 10000 psig (689 bar)Working temperature from -10℉ to 1200℉ (-23℃ to 649℃)Flanged connections comply with ASME B16.5Stainless steel, carbon steel, Alloy 20, Alloy 400, Incoloy 825, and duplex stainless steel materialsPiping and instrument valves in one body Weight, space and cost saving over traditional designsBlowout-proof valve stems and needlesComplete traceability of materials1/4 female NPT standard vent with plug1/ 2female NPT standard outlet with plug
AdvantagesWeight, space and cost saving over traditional designsOne-piece structure to realize an efficient transition from the process pipeline to the instrument pipeline while reducing potential leakage points. Stainless steel shroud protects stem threads against ingress of dirt and dustStem threads above packing, protected from system mediaStem threads are cold rolled for high strength and smooth operation Two-piece knuckle joint provides nonrotating needle feature. Joint is located above the packing, protected from system mediaSafety back-seating needle seals in fully open positionNonrotating, hardened needle for positive shutoff
More OptionsOptional material 316 stainless steel, carbon steel, Alloy 20, Alloy 400, Incoloy 825, and duplex stainless steel materialsOptional Primary,Secondary,Bleed:OS&Y valve needle valveOptional for sour gas service