A
Double Block and Bleed
Provides complete isolation on both upstream and downstream sides with a bleeder valve for verification.
Mechanical
Control Seal Double Block and Bleed Valve (DBBV)
Non-lubricated expanding plug valve featuring double block and bleed operation for provable zero-leakage isolation in critical hydrocarbon networks.
1" to 48"
SIZE RANGEClass 150-2500#
PRESSURE CLASS−196 / +250°C
TEMPERATURE RANGEAPI 6D
DESIGN STANDARDSWhy Choose Us
Engineering Advantages
Non-lubricated expanding plug valve featuring double block and bleed operation for provable zero-leakage isolation in critical hydrocarbon networks.
B
Expanding Plug Design
Linear mechanical sealing action eliminates seal friction and wear during rotation.
C
Zero Leakage
Meets the most stringent leakage standards including API 6D and API 598.
D
Low Fugitive Emissions
Tested and certified compliant with ISO 15848 and Shell MESC SPE 77-312.
Technical Specs
Operational Matrix
Size Range
1" to 48"
Pressure Class
ASME Class 150# to 2500#
Temperature Range
-196°C to +250°C
Bore Type
Fullbore or Reduced Bore
Design Standards
API 6D, ASME B16.34, API 598
Operation
Manual handwheel, bevel gear, or automated actuator
Fugitive Emissions
ISO 15848 and Shell MESC SPE 77-312 compliant
Service Conditions
Industrial Applications
APP-01
Metering Stations
Zero-leakage calibration isolation for fiscal custody transfer systems.
Mechanical
APP-02
Refinery Product Blending
Prevents product cross-contamination in refinery manifold lines.
Mechanical
APP-03
Airport Fuelling Systems
Ensures positive isolation in critical fuel hydrant piping loops.
Mechanical
Need a Control Seal DBBV?
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