DBB Ball Valves (Double block & bleed)

Double block & bleed ball valves are mainly suitable for the instrumentation but is also required as an alternative to the in-line installation of two valves.

Thanks to a DBB ball valve, it is possible to have the same result reducing costs,  overall dimensions and the ability to bleed off the plant, by controlling a potential leakage of the plant.

Double block & bleed valves DBB are recommended for any pressure class and ensure long-lasting seal.

They can be supplied both in the Trunnion and in the Floating version.

Main applications in the petrochemical field:

• Cryogenic service.
• Low temperature.
• Ambient temperature.
• High temperature.
• Corrosive fluids.
• High pressures.
• Samplings from line.
• Fluids  injection.

These valves can be designed to meet with Customer’s requirements: for instance, they may be buried in the ground and made operable by the extensions.

Valves are built in any steel required by the Customer and defined in the data sheet according to the quotation request.

DBB ball valves produced by Etiovalves are provided in accordance with the following certifications:

• ISO (International Organization for standardization)
• PED (Pressure Equipment Directive)
• ATEX (ATmosphères EXplosibles)