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Floating DBB Valve/Modular Integral DBB Valve

Short Description:

Valve type Floating DBB valve
Size NPS 1/2″~8″ (50mm~200mm)
Pressure ASME Class150~1500LBS (PN16~PN250)
Material A105, LF2, F304/F304L, F316/F316L,16MN, 20 ALLOY, F51, F91, C95800 ETC.
Production Standards API/ANSI/ASME/EN/DIN/BS/GB/GOST

Design Feature


Product Tags

Floating DBB valve Modular Integral Double Block & Bleed Valves/Modular Integral DBB valve

The floating DBB ball valve body is generally is manufactured from forged or bar stock material to ensure a high integrity pressure envelope for the valve body, also called modular ball valve. Modular double block and bleed valve combines two in-line isolation valves into a single body with an additional bleed valve, so the integral compact body so called modular integral DBB Valve. The bleed valve used to drain or vent trapped fluid between the two closures to ensure highest level of safety in double isolation and bleed service.


● Modular compact valve design good body strength and long life
● Save space and weight
● Safety double isolation and bleed
● Reduced potential leakage path by all in one integral modular valve
● Bubble tight shut off
● Valve body design can be one pc body, two pcs body, three pcs body
● Valve end construction can be RF-RF, RF-SW, RF-NPT, NPT-NPT, etc.
● Material Stainless steel/Carbon steel /Duplex / Super Duplex/ Monel/ Hastelloy/ Inconel
● Application for critical chemical injection and process sampling,insulation of pressure indications or gauges, fields like cryogenic low temperature service corrosive fluids,high pressure

Valves can be produced by customer required data sheet and service, contact sales engineer for more details.

Floating modular DBB ball valve typical applications include manifold isolation, instrumentation or process equipment isolation.

Double Block and Bleed ball Valves (DBB ball valve) are used in the process industries to provide double isolation for additional safety such that the upstream fluid does not reach the downstream plant equipment. The bleed and vent valves ensure that fluid is drained from the cavity between the seals and to drain any fluid downstream of the process stream,minimizing any hazardous risk when transferring liquids or gas .

Instrument Dbb Ball Valve  (2)
Instrument Dbb Ball Valve  (1)

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  • Production Range DBB floating ball valves
    Design & MFG code API 6D/ASME B16.34 /ISO17292/ ISO 14313/BS5351
    Face to Face ASME B16.10, EN558
    End Connection FLANGE RF/RTJ ASME B16.5/EN1092-1/GOST 33259; BUTT WELD BW ASME B16.25
    Test & Inspection API 598, API 6D,ISO5208/ISO 5208/EN12266/GOST 9544
    Material Forged steel or Cast steel: carbon steel, alloy steel, stainless steel, duplex steel, bronze, Inconel, Hastelloy, Monel, Incoloy etc.
    Size NPS 1/2″~8″ (15mm~200mm)
    Pressure ASME Class150~1500LBS (PN16~PN250)
    Operation Manual
    Special design
    Double secure isolation more reliable to safety factor
    Zero leakage performance credibility
    Bleed and depressurize pipeline system
    Less installation space and less weight in pipeline
    Easy one step operation in one union body
    Less cost in material and labor
    Inline repair or maintenance check allowable by not shut down plant,improve plant efficiency
    modular design material no leak path high quality
    Basic design
    Stem feature Anti blow out proof
    Bonnet Construction Bolted bonnet
    Ball type Side entry double block & bleed balls
    Bore type Full bore or Reduced Bore
    Optional customize NACE MR0175, MR0103, ISO 15156 compliance
    ISO 5211 MOUNTING PAD Bareshaft
    Limit Switch
    Lock device
    ESDV service suitability
    ISO 15848-1 2015 Low fugitive emission test, ISO15848/SHELL SPE 77/312 Low temperature leakage test
    Non-destructive test (NDT)  API 6D, ASME B16.34
    Third party inspection test report
    Documents EN 10204 3.1 MTR Material test report
    Pressure inspection report
    Visual and dimension control report
    Product warranty
    Valve operation manual
    Product of origin
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