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Integral Double Block & Bleed

Introduction

Integral Double Block & Bleed (DBB) Valve are engineered to offer compact, reliable, and efficient isolation for critical process systems. This innovative design integrates two block valves and a bleed valve into a single compact unit, eliminating the need for multiple valve installations. The DBB configuration ensures secure double isolation and safe venting of trapped pressure or fluids, making it ideal for maintenance, sampling, or pressure release operations.

These valves are extensively used in industries such as oil and gas, chemical processing, and power generation, where space constraints and safety are top priorities. By reducing the number of connections and potential leak points, Integral DBB Valves enhance system integrity, reduce installation costs, and improve operational efficiency.

Applications

Integral Double Block & Bleed Valve is trusted across various industries for its precision, durability, and reliability. Explore its wide-ranging applications below:

Oil & Gas Industry icon

Oil & Gas Industry

Integral DBB Valves are used in pipelines and offshore platforms for isolating and safely venting high-pressure fluids, ensuring operational safety and efficiency.

Chemical Processing Industry icon

Chemical Processing Industry

These valves provide secure isolation and venting for handling corrosive and hazardous chemicals, ensuring safety and preventing cross-contamination in processing systems.

Power Generation Industry icon

Power Generation Industry

In power plants, Integral DBB Valves are used for isolating high-pressure steam or cooling systems, enhancing safety during maintenance and operations.

Petrochemical Industry icon

Petrochemical Industry

Integral DBB Valves are crucial for isolating and controlling fluids in complex petrochemical processes, ensuring leak prevention and process integrity.

Marine & Shipbuilding Industry icon

Marine & Shipbuilding Industry

Used in marine systems to isolate and vent fluid and gas lines, these valves ensure reliability and safety in compact, high-pressure environments.

INSTALLATION ADVANTAGES

  • ✔More compact design
  • ✔Reduced weight and height
  • ✔Reduced leakage point
  • ✔Reduced effect of vibration
  • ✔Supporting bracket are not required
  • ✔Reduced installation cost
  • ✔Reduced gasket and bolting

Integral Block & Bleed Valve

  • ✔Ball and globe type needle valves
  • ✔Flanged and threaded conncetions
  • ✔Integrally forged body

Monoflange

  • ✔Globe type needle valves
  • ✔Flanged and threaded conncetions
  • ✔Slimline integrally forged body

Root valve

  • ✔Ball and globe type needle valves
  • ✔Weld or threaded connections
  • ✔Direct connection to the vessel

Technical Specification

Within Given Tolerances By Closely Monitoring Critical Dimensions, Surface Finishes, Run Out, Sharp Edges Etc. After Referring And Meeting The Requirements As Per Drawing, Under Rigid Quality Controlled Procedures Approved To ISO 9001: 2015 Which Ensures Consistent Quality and High Performance Products.

Design & Testing Standards

  • ✔YDB Valves are designed and manufactured as per ASME B 16.34, API 6D & BS 5351/BS EN ISO 17292. These standards cover pressure - Temperature ratings, minmum shell thickness, bore diameter for each size/ class.
  • ✔Valve body and trim can be offered as per NACE MR 01-75 compliant.
  • ✔Castings inspection as per MSS-SP 53, 54, 55, 59, 93 & 94
  • ✔Actuator mounting pad on the valve as per ISO 5211
  • ✔Other applicable standards:
  • - Valve Bore: API 6D
  • - Face to Face: ASME B 16.10/API 6D
  • - Flange dimensions: ASME B16.5/B16.47 / MSS SP 44
  • - Butt weld valve ends: ASME B 16.25/B 31.3/B 31.4/B 31.8
  • - Pressure tests: API 6D/API 6FA/BS EN 12266-1 & 2
  • - Fire safe test: API 607/ API 6FA/BS 6755 Part II/ BS EN ISO 10497
  • - Drain / Vent/ Bypass: MSS SP 46/API 6D

Material of Construction

FORGEDCAST
CARBON STEEL
ASTM A105ASTM A216 WCB/WCC
ASTM A350 LF2ASTM A352 LCB/LCC
ALLOY STEEL
ASM A350 LF3ASTM A352 LC3
ASTM A182 F5aASTM A217 C5
ASTM A182 F9ASTM A217 C12
ASTM A182 F11ASTM A217 WC6
ASTM A182 F22ASTM A217 WC9
ASTM A182 F91ASTM A217 C12A
AUSTENITIC STAINLESS STEEL
ASTM A182 F304/F304LASTM A351 CF8/CF3
ASTM A182 F316/F316LASTM A351 CF8M/CF3M
ASTM A182 F321ASTM A351 CF8C
ASTM A182 F347ASTM CK3MCUN
ASTM A182 F44 (6MO)A351 CN7M
ASTM A182 F20° (ALLOY 20)
FERRITIC-AUSTENITIC STAINLESS STEEL
ASTM A182 F51 - UNS S31803† (DUPLEX S.S.)A995* GR.4A/A351 CD3MN
ASTM A182 F53 - UNS S32750 (SUPER DUPLEX S.S.)A995* GR.5A/A351 CE3MN
ASTM A182 F55 - UNS S32760 (SUPER DUPLEX S.S.)A995* CD3MWCuN/A995 GR.6A
NICKEL ALLOY
INCONEL 825 - UNS N08825 ASTM B564 - N08825A484 CU5MCUC*
INCONEL 600 - UNS N06600 ASTM B564 - N06600A494 CY40*
INCONEL 625 - UNS N06625 ASTM B564 - N06625A494 CW6MC*
MONEL 400 - UNS N04400 ASTM B564 - N04400A494 M35-1
TITANIUM
ASTM B381 GR.F2ASTM B367 GR.C2
ASTM B381 GR.F3ASTM B367 GR.C3

DBB05 SERIES

10mm Bore

  • SINGLE PIECE FORGED
  • RAISED FACE (RF) FLANGE PROCESS CONNECTIONS to 1/2in. Female NPT OUTLET CONNECTIONS.
SIZECLASSDimensions(mm)Weight(Kg.)
A(RF)A(RTJ)A(FLANGE/NPT)BCFLANGEFLANGE/NPT
1/2150188-16888.960.54.33.6
30018819316895.266.553.9
60018819616895.266.55.24
900/1500206213176120.682.57.95
2500206213176133.488.510.86
3/4150188-16898.669.94.93.9
300188196168117.382.56.34
600188196168117.382.56.54.2
900/150020621317613088.99.55.6
2500206213176139.795.3117.1
115018819317310879.253.9
30019019517312488.96.34.3
60019019817312488.96.54.5
900/1500240240195149.3101.611.56.8
2500255255203158.810814.38.1
1-1/215019820317812798.674.6
300218218185155.4114.310.16
600235235204155.4114.3116.5
900/1500280280215177.8123.916.59.4
2500316316220203.2146.125.814
2150203213183152.4120.79.45.5
300223228190165.112712.86.8
600243253202165.112713.48.1
900/1500288288215215.9165.125.414
2500313313220235171.536.622

*Dimensions are for reference only and are subject to change

14mm Bore

  • SINGLE PIECE FORGED
  • RAISED FACE (RF) FLANGE PROCESS CONNECTIONS to 1/2in. Female NPT OUTLET CONNECTIONS.
SIZECLASSDimensions(mm)Weight(Kg.)
A(RF)A(RTJ)A(FLANGE/NPT)BCFLANGEFLANGE/NPT
115023123119710879.27.73.9
30024124119712488.98.84.3
60024124120312488.98.84.5
900/1500261261203149.3101.612.76.8
2500273273203158.810816.58.1
1-1/215024124120712798.69.14.9
300251251207155.4114.312.36.4
600251251215155.4114.312.36.9
900/1500291291215177.8123.917.79.8
2500316316220203.2146.12714
2150241213210152.4120.710.95.9
300261241210165.112714.17.5
600261261220165.112714.18.4
900/1500306306220215.9165.126.614
2500346346230235171.537.822.1

*Dimensions are for reference only and are subject to change

19mm Bore

  • SINGLE PIECE FORGED
  • RAISED FACE (RF) FLANGE PROCESS CONNECTIONS to 1/2in. Female NPT OUTLET CONNECTIONS.
SIZECLASSDimensions(mm)Weight(Kg.)
A(RF)A(RTJ)BC
1-1/215025325312798.69.8
300263263155.4114.313
600263263155.4114.313
900/1500303303177.8123.918.4
2500328328203.2146.127.7
2150253253152.412711.7
300273273165.112714.9
600273273165.112714.9
900/1500318318215.9165.127.4
2500358358235171.538.6

*Dimensions are for reference only and are subject to change

Modular Double Block & Bleed Valve

Introduction

The Modular Double Block & Bleed is a versatile valve connection design, combining a robust flanged inlet for secure pipeline attachment with a Female NPT (National Pipe Thread) outlet for flexible downstream connections. This hybrid configuration allows for easy integration into systems that require a combination of flanged and threaded connections, making it an ideal choice for applications with varied piping standards.

The flange provides a sturdy, leak-proof connection to high-pressure pipelines, while the NPT outlet offers adaptability to various threaded fittings, ensuring compatibility with a wide range of equipment and accessories.

Technical Specification

Within Given Tolerances By Closely Monitoring Critical Dimensions, Surface Finishes, Run Out, Sharp Edges Etc. After Referring And Meeting The Requirements As Per Drawing, Under Rigid Quality Controlled Procedures Approved To ISO 9001: 2015 Which Ensures Consistent Quality and High Performance Products.

Design & Testing Standards

  • ✔YDB Valves are designed and manufactured as per ASME B 16.34, API 6D & BS 5351/BS EN ISO 17292. These standards cover pressure - Temperature ratings, minmum shell thickness, bore diameter for each size/ class.
  • ✔Valve body and trim can be offered as per NACE MR 01-75 compliant.
  • ✔Castings inspection as per MSS-SP 53, 54, 55, 59, 93 & 94
  • ✔Actuator mounting pad on the valve as per ISO 5211
  • ✔Other applicable standards:
  • - Valve Bore: API 6D
  • - Face to Face: ASME B 16.10/API 6D
  • - Flange dimensions: ASME B16.5/B16.47 / MSS SP 44
  • - Butt weld valve ends: ASME B 16.25/B 31.3/B 31.4/B 31.8
  • - Pressure tests: API 6D/API 6FA/BS EN 12266-1 & 2
  • - Fire safe test: API 607/ API 6FA/BS 6755 Part II/ BS EN ISO 10497
  • - Drain / Vent/ Bypass: MSS SP 46/API 6D

Material of Construction

FORGEDCAST
CARBON STEEL
ASTM A105ASTM A216 WCB/WCC
ASTM A350 LF2ASTM A352 LCB/LCC
ALLOY STEEL
ASM A350 LF3ASTM A352 LC3
ASTM A182 F5aASTM A217 C5
ASTM A182 F9ASTM A217 C12
ASTM A182 F11ASTM A217 WC6
ASTM A182 F22ASTM A217 WC9
ASTM A182 F91ASTM A217 C12A
AUSTENITIC STAINLESS STEEL
ASTM A182 F304/F304LASTM A351 CF8/CF3
ASTM A182 F316/F316LASTM A351 CF8M/CF3M
ASTM A182 F321ASTM A351 CF8C
ASTM A182 F347ASTM CK3MCUN
ASTM A182 F44 (6MO)A351 CN7M
ASTM A182 F20° (ALLOY 20)
FERRITIC-AUSTENITIC STAINLESS STEEL
ASTM A182 F51 - UNS S31803† (DUPLEX S.S.)A995* GR.4A/A351 CD3MN
ASTM A182 F53 - UNS S32750 (SUPER DUPLEX S.S.)A995* GR.5A/A351 CE3MN
ASTM A182 F55 - UNS S32760 (SUPER DUPLEX S.S.)A995* CD3MWCuN/A995 GR.6A
NICKEL ALLOY
INCONEL 825 - UNS N08825 ASTM B564 - N08825A484 CU5MCUC*
INCONEL 600 - UNS N06600 ASTM B564 - N06600A494 CY40*
INCONEL 625 - UNS N06625 ASTM B564 - N06625A494 CW6MC*
MONEL 400 - UNS N04400 ASTM B564 - N04400A494 M35-1
TITANIUM
ASTM B381 GR.F2ASTM B367 GR.C2
ASTM B381 GR.F3ASTM B367 GR.C3

Testing Capabilities

YDB Valve has the latest state-of-the-art testing facility available and are practically equipped to perform most stringent and variety of tests possible on Double Block & Bleed Valves. Few of them are:

  • ✔HYDROSTATIC PRESSURE TEST
  • ✔PNEUMATIC PRESSURE TEST
  • ✔LOW PRESSURE NITROGEN GAS TEST
  • ✔ANTISTATIC DEVICE TEST
  • ✔CAVITY RELIEF TEST
  • ✔FUGITIVE EMISSION TEST
  • ✔CRYOGENIC TEST
  • ✔TYPE-ACCEPTANCE TEST
  • ✔HIGH PRESSURE NITROGEN/GAS TESTING
  • ✔VACUUM TEST (HELIUM LEAK DETECTION)
  • ✔SULPHIDE STRESS CRACKING (SSC) TEST
  • ✔HYDROGEN INDUCED CRACKING (HIC) TEST

Dimensional Detail

Flanged Inlet and NPT Outlet

Class 150 Flanged Inlet - 1/2" Female NPT Outlet

Size InchTypeABCDEFNMILWt kg
1/2"Floating88.960.535.014.09.62.015.741351788.0
3/4"Floating98.669.842.914.011.22.015.741351808.5
1"Floating10879.250.814.012.72.015.7413518710.0
1-1/2"Floating12798.673.214.015.92.015.7413518913.0
2"Floating15212192.014.017.52.019.0413519116.0
3"Floating190152.4127.014.022.32.019.0413520121.0

Class 300 Flanged Inlet - 1/2" Female NPT Outlet

Size InchTypeABCDEFNMILWt kg
1/2"Floating95.266.535.014.012.72.015.741501858.5
3/4"Floating117.082.642.914.014.32.019.041501889.0
1"Floating124.088.950.814.015.92.019.0415019010.5
1-1/2"Floating155.0114.073.214.019.12.022.2415019313.5
2"Floating16512792.014.020.72.019.0815019617.0
3"Floating210.0168.3127.014.027.02.022.2815020322.5

Class 600 Flanged Inlet - 1/2" Female NPT Outlet

Size InchTypeABCDEFNMILWt kg
1/2"Floating95.266.535.014.014.36.3515.741801879.0
3/4"Floating117.082.642.914.015.96.3519.041801899.5
1"Floating124.088.950.814.017.56.3519.0418019111.0
1-1/2"Floating155.0114.073.214.022.36.3522.2418019614.0
2"Floating165.0127.092.014.025.47.019.0818020018.0
3"Floating210.0168.3127.014.031.87.022.2818020724.0

Class 900 Flanged Inlet - 1/2" Female NPT Outlet

Size InchTypeABCDEFNMILWt kg
1/2"Floating121.082.635.014.022.36.3522.2420022111.0
3/4"Floating130.088.942.914.025.46.3522.2420022412.0
1"Floating149.0102.050.814.028.66.3525.4420023113.0
1-1/2"Floating178.0124.073.214.031.87.028.6420023517.0
2"Floating216.0165.092.014.038.17.025.4820024022.0
3"Floating240.0190.5127.014.038.17.025.4820024530.0

Class 1500 Flanged Inlet - 1/2" Female NPT Outlet

Size InchTypeABCDEFNMILWt kg
1/2"Floating121.082.635.014.022.36.3522.2422022111.0
3/4"Floating130.088.942.914.025.46.3522.2422022412.0
1"Floating149.0102.050.814.028.66.3525.4422023113.0
1-1/2"Floating178.0124.073.214.031.87.028.6422023517.0
2"Floating216.0165.092.014.038.17.025.4822024022.0
3"Floating265.0203.2127.014.047.77.031.8822025530.0

Class 2500 Flanged Inlet - 1/2" Female NPT Outlet

Size InchTypeABCDEFNMILWt kg
1/2"Floating134.088.935.014.030.26.3522.2425022813.0
3/4"Floating140.095.242.914.031.86.3522.2425023014.0
1"Floating159.0108.050.814.035.06.3525.4425023415.0
1-1/2"Floating203.0156.073.214.044.57.031.8425024520.0
2"Floating235.0171.092.014.050.97.028.6825025327.0
3"Floating305.0228.6127.014.066.79.535.0825027041.0

Corrosion Protection and Painting

  • ✔All castings are shot blasted and are subjected to dewatering oil coats. Carbon Steel valves are zinc phosphated and internally lacquered before final assembly.
  • ✔Valves are thoroughly cleaned and primer coated with Epoxy Zinc Phosphate primer, followed by a final coat of Epoxy Blue shade applied in semi-gloss finish.
  • ✔Valves are shipped in vapour corrosion inhibitor impregnated paper bags with desiccant pouches to prevent corrosion due to saline environment.
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