Where compactness and a high specification for mechanical and piping applications is required, Imperial Valve offers a complete range of instrument double block and bleed valves (dbb's) in accordance with ANSI / ASME B.16.34.
Double block and bleed valves (dbb)
Sampling & chemical injection dbb
Featuresdouble block and bleed valves / dbb's
Through bore ball-needle-ball configuration
Reduced and full bore sizes available
Flange x thread or flange x flange configurations
Sampling and chemical injection versions available
Handle locking option available
Fire tested in accordance with BS6755 part II
Specifications double block and bleed valves / dbb's
Flange sizes 1/2" upto 3" available
Ratings: ANSI 150-2500 lbs / DIN PN10-PN160
Materials: a wide selection of materials for both body and internals, e.g.: carbon steel, low alloy steels, stainless steels, Duplex, Ni-alloys and titanium. Including NACE MR- 01-75 (latest revision)