Modular double block & bleed (DBB) valve
Valves suitable for Oil & Gas production, processing, transportation, distribution, chemical and petrochemical refining including system isolation, pressure level and flow measurement, instrument drain, chemical injection and sampling for smaller sizes.
- Design Standard
- Based on API 6D, API 6A, ASME B16.34, ISO 14313, ISO 10423, ISO 17292
- Temperature Range
- -58 to 392°F (-50 to 200°C)
- Size
- NPS 1-12 (DN 25-300)
- Pressure Rating
- ASME 150 - ASME 2500
- End Connections
- RF, RTJ as per B16.5 &B16.47 BW, Butt Welded as per B16.25 SW, Socket Welded as per B16.11
VALVE DESIGN
API 6D, API 6A, ASME B16.34, ISO 14313, ISO 10423, ISO 17292
TEMPERATURE RANGE
-58 to 392°F (-50 to 200°C)
SIZE
NPS 1-12 (DN 25-300)
PRESSURE RATING
ASME 150 - ASME 2500
FACE-TO-FACE
As per API 6D standard
END CONNECTIONS
RF, RTJ as per B16.5 &B16.47
BW, Butt Welded as per B16.25
SW, Socket Welded as per B16.11
MATERIALS
Low Temperature and Low Alloy Carbon Steel
Stainless steel, Duplex and Super Duplex
Nickel alloys, Titanium
BODY DESIGN
Forged and casting bolted two-piece and three-piece
SEAT DESIGN
Soft or metal seated with Hard facing on ball and seats
Double piston seats
Combination seats
FEATURES
Double block and bleed design (DBB)
Secondary seals in pure Graphite
Anti-Static Device
Anti Blow out stem
Emergency sealant injection on seats and stem available
Low fugitive emission stem packing available
O-ring /Lip seals and Graphite configuration
CRA overlay on all dynamic sealing areas or on all wetted parts available
Extended bonnet for low & high temperature available
OPERATOR
Manual: wrench or Gear with padlocking
Actuated: Pneumatic/ Hydraulic/Electric
TESTING & CERTIFICATIONS
Compliance with API 6D & ISO 5208 & API 598 inspection and testing
Fire safe and fire tested as per API 607
SIL 3 Certification as per IEC61508
Fugitive Emission as per ISO15848
PED 2014/68/UE
