DBB valves
Double ball and bleed ball valves (widely known as DBB valves) consist in a couple of insulation ball valves integrated in a single body.
The bleeding function between the two insulation balls is provided by means of a third valve – usually needle tpe and/or other types of valves (ball, globe – available on request).
Technical specifications
Nominal Size
DN 1” to 6”
Class
150 to 2500 flanged RF and RTJ
Materials
- Standard carbon steel
- Stainless steel
- Special alloys
Features
Virtually all of Bremer manufacturing range can be offered in DBB execution that means:
- Floating or Trunnion design with full or reduced bore
- Antistatic device, fire safe, NACE
- Customized design
- Standard face to face dimensions according to ANSI B16.10
- Wafer double block
- Class range from ANSI #2500
- Temperature range from cryo -196°C to 400°C
- Antistatic, Nace, Ped, Atex, FireSafe, SIL available
- Anti-blow out stem
test
Bremer tests and certifies all valves according to API598, BS6755 part I or DIN3230. Upon request Bremer can perform all the following additional tests, internally or using:
- High Temperature Test
- Low Temperature Test
- Vacuum Test
- Cycle Test
- Nitrogen Hight Pressure Gas Test
- Fugitive Emission with Helium
- Dye Penetrant Test
- Magnetic Particles Test PMI
- Ultrasonic Test
- RX Test