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Double Block and Bleed Ball Control Valve (DBB VALVE)

The Double Block and Bleed Ball Valve is a sophisticated valve designed for critical sealing applications. It consists of two ordinary ball valves connected by a common inlet end.
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Overview

The Double Block and Bleed Ball Control Valve (DBB Valve), as defined by API 6D, features dual seating surfaces that provide secure sealing against pressure from both ends. An integrated venting and bleeding mechanism safely relieves cavity pressure between the seats, ensuring reliable operation in critical service.

Available in modular (double ball) or integral designs, the DBB Valve meets diverse application requirements. The modular type incorporates two balls in a single valve for maximum safety, while the integral type is commonly used in instrumentation systems with flexible configuration options.

Engineered with a fire-safe design, anti-blow-out stem, and robust forged construction, the Double Block and Bleed Ball Control Valve delivers long-term, dependable performance under demanding conditions. It is offered in sizes ranging from NPS 2 to NPS 28 and pressure classes from 150 lb to 2500 lb, making it a versatile solution for oil & gas, refining, petrochemical, and industrial applications.


Application

The Ball Control Valve (DBB Valve) is widely utilized in natural gas, petrochemical, pipeline transmission, and storage industries, where absolute zero leakage is a critical requirement. It is indispensable for main-line isolation and multi-purpose service in liquid pipelines and refined product transmission lines, ensuring safe operation and preventing cross-contamination.

In addition, the valve is extensively used in meter calibration systems, where a reliable tight seal on each valve connected to the meter device is essential for accurate measurement and system integrity. Its double block and bleed functionality enhances safety during maintenance, pressure testing, and system isolation, making it a trusted solution for high-integrity industrial applications.



Main Features

PRODUCT RANGE

Class 150 from ½'' to 10''

Class 300 from ½'' to 8''

Class 600 from 1/2" to 4"




Materials

BODY: Carbon steel, Stainless steel, Low temperature carbon steel, Duplex, Special Alloys,... Other materials under request

SOFT SEATS: PTFE, RPTFE, PEEK, DEVLON, NYLON,... Other materials under request

METAL SEAT: Tungsten Carbide(TC), Stellited, Ni60...Other materials under request.

TRIM: A105+EP, 304, 316, 410, MONEL,... Other materials under request

DESIGN STANDARDS

ASME Standards

B1.20.1Pipe Threads, General Purpose(Inch)

B16.10Face-to-Face and End-to-End Dimensions of Valves

B16.25Buttwelding Ends

B16.11Forged Fittings, Socket-Welding and Threaded

B16.5Flanged Fittings and Pipe Flanges

B16.47Large Diameter Steel Flanges

API Standards

6DSpecifications for Pipeline valves

598Valve Inspection and Testing

607Fire test for soft-seated quarter-turn valves

6FASpecification for Fire Test for Valves

MSS Standards

SP-55Quality Standard for Steel Castings for Valves,Flanges,and Fittings and Other Piping Components-Visual Method for Evaluation of Surface Irregularities

SP-54Quality Standard for Steel Castings for Valves,Flanges,and Fittings and Other Piping Components-Radiographic Examination Method

SP-53Quality Standard for Steel Castings for Valves,Flanges,and Fittings and Other Piping Components-Magnetic Particle Examination Method


Category Details
Product DBB Ball Valve (Double Block and Bleed Ball Control Valve)
Size 1/2" – 48"
Pressure 150lb – 2500lb
Power / Actuation Worm Gear, Pneumatic, Hydraulic
Brand Name YFV, OEM
Materials Body: Carbon Steel, Stainless Steel, etc.
Soft Seats: PTFE
Metal Seat: Tungsten Carbide (TC), Stellited, Ni60
Trim: A105+EP, 304, 316, 410, MONEL
Other materials available on request
Design Standards ASME, API, MSS
Application Suitable for various industries. Ideal for B2B buyers such as industrial manufacturers, petrochemical plants, oil & gas transmission, and pipeline operators. Leading manufacturer of Double Bleed Ball Control Valves.



FAQ

Q: How does the Double Block and Bleed Ball Valve differ from a conventional valve?

A: Unlike conventional valves, it can effectively prevent leakage during system operation, and it allows for quick closure and easy discharge.

Q: What are the benefits of the modular or split - body type design?

A: It has two balls in one valve, which ensures greater safety. The three - piece body construction is beneficial for instrumentation and piping, and it can save weight, space, and installation time.

Q: Can this valve be used in high - pressure applications?

A: Yes, it is available in a class range from 150 lb to 2500 lb, suitable for various pressure levels, including high - pressure applications.

Q: What maintenance advantages does a Double Block and Bleed Ball Valve provide?

A: Its cavity-bleeding capability allows operators to safely vent pressure and verify sealing integrity without removing the valve. This reduces downtime and enhances overall safety during maintenance operations.

Q: Can the DBB Ball Valve be automated?

A: Yes. The valve can be equipped with electric, pneumatic, or hydraulic actuators depending on the application. Automation ensures reliable performance in remote or hazardous environments where manual operation is impractical.




Production process

Double Block and Bleed Ball Control Valve (DBB VALVE)

Control Valve Production process


Certificates & Test reports

Yuefeng Valve Certificates & Test reports

Packing&Shipping

Control Valve A: Yes, it is available in a class range from 150 lb to 2500 lb, suitable for various pressure levels, including high - pressure applications. Q: What maintenance advantages does a Double Block and Bleed Ball Valve provide? A: Its cavity-bleeding capability allows operators to safely vent pressure and verify sealing integrity without removing the valve. This reduces downtime and enhances overall safety during maintenance operations. Q: Can the DBB Ball Valve be automated? A: Yes. The valve can be equipped with electric, pneumatic, or hydraulic actuators depending on the application. Automation ensures reliable performance in remote or hazardous environments where manual operation is impractical. MAIN FEATURES PRODUCT RANGE Class 150 from ½'' to 10'' Class 300 from ½'' to 8'' Class 600 from 1/2" to 4" MATERIALS BODY: Carbon steel, Stainless steel, Low temperature carbon steel, Duplex, Special Alloys,... Other materials under request SOFT SEATS: PTFE, RPTFE, PEEK, DEVLON, NYLON,... Other materials under request METAL SEAT: Tungsten Carbide(TC), Stellited, Ni60...Other materials under request. TRIM: A105+EP, 304, 316, 410, MONEL,... Other materials under request DESIGN STANDARDS ASME Standards B1.20.1Pipe Threads, General Purpose(Inch) B16.10Face-to-Face and End-to-End Dimensions of Valves B16.25Buttwelding Ends B16.11Forged Fittings, Socket-Welding and Threaded B16.5Flanged Fittings and Pipe Flanges B16.47Large Diameter Steel Flanges API Standards 6DSpecifications for Pipeline valves 598Valve Inspection and Testing 607Fire test for soft-seated quarter-turn valves 6FASpecification for Fire Test for Valves MSS Standards SP-55Quality Standard for Steel Castings for Valves,Flanges,and Fittings and Other Piping Components-Visual Method for Evaluation of Surface Irregularities SP-54Quality Standard for Steel Castings for Valves,Flanges,and Fittings and Other Piping Components-Radiographic Examination Method SP-53Quality Standard for Steel Castings for Valves,Flanges,and Fittings and Other Piping Components-Magnetic Particle Examination Method Category Details Product DBB Ball Valve (Double Block and Bleed Ball Control Valve) Size 1/2" – 48" Pressure 150lb – 2500lb Power / Actuation Worm Gear, Pneumatic, Hydraulic Brand Name YFV, OEM Materials Body: Carbon Steel, Stainless Steel, etc. Soft Seats: PTFE Metal Seat: Tungsten Carbide (TC), Stellited, Ni60 Trim: A105+EP, 304, 316, 410, MONEL Other materials available on request Design Standards ASME, API, MSS Application Suitable for various industries. Ideal for B2B buyers such as industrial manufacturers, petrochemical plants, oil & gas transmission, and pipeline operators. Leading manufacturer of Double Bleed Ball Control Valves. Production process Double Block and Bleed Ball Control Valve (DBB VALVE) Control Valve Production process Certificates & Test reports Yuefeng Valve Certificates & Test reports Packing&Shipping




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