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 1/2-900 (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/HUB ENDS

Product Introduction

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. 

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 1/2-36 (DN 10-900)

PRESSURE RATING

ASME 150 - ASME 2500

FACE-TO-FACE

As per Manufacturer standard or clients requirements.

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 /API 6FA/ISO 10497

SIL 3 Certification as per IEC61508

Fugitive Emission as per ISO15848

PED 2014/68/UE

Contact Information

WeChat: 18657716116
TEL / FAX: 0577-86805669 / 0577-86807996
C501,Road 8th,Avenue 3rd, Binhai Park ,Wenzhou Economic & Technological Development Zone ,Wenzhou ,China

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