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API 6D ball valve selection guide

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Home News Actuator Selection Guide for Double Block And Bleed Ball Valves
Publish Time: 2026-08-03
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Author: J-VALVES
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Introduction

In automated pipeline systems, selecting the correct actuator is essential for the reliable operation of a Double Block and Bleed Ball Valve. The actuator must provide sufficient torque, accurate control, and stable performance under different operating conditions.

J-VALVES provides customized Automated DBB Valve solutions with pneumatic, electric, and hydraulic actuator options for oil & gas, LNG, chemical, and industrial applications.

1. Pneumatic Actuator for DBB Ball Valve

The Pneumatic DBB Ball Valve is widely used in industrial automation systems due to its fast response and simple structure.

Advantages include:

  • Quick opening and closing operation

  • Reliable performance in hazardous areas

  • Easy integration with control systems

  • Suitable for frequent valve operation

Pneumatic actuators are commonly selected for pipeline isolation, gas processing, and LNG applications.

2. Electric and Hydraulic Actuator Selection

For applications requiring precise control or remote operation, electric and hydraulic actuators provide additional solutions.

Electric actuators:

  • Suitable for locations without instrument air supply

  • Easy connection with PLC and control systems

  • Good position control capability

Hydraulic actuators:

  • Provide high output torque

  • Suitable for large-size and high-pressure DBB valves

  • Reliable for offshore and heavy-duty applications

3. Actuator Torque Calculation

Correct actuator selection depends on accurate torque calculation.

Factors affecting required torque include:

  • Valve size and pressure rating

  • Seat design and sealing force

  • Medium characteristics

  • Operating temperature

J-VALVES selects suitable actuators according to valve torque requirements, ensuring reliable operation without overloading the valve structure.

4. Automated DBB Valve Applications

With advanced actuator systems, DBB Ball Valves can achieve safe and efficient automated operation in:

  • Oil and gas pipelines

  • LNG storage and transportation

  • Petrochemical plants

  • Offshore platforms

  • Critical process systems

The combination of double isolation and automated control improves system safety and operational efficiency.

5. J-VALVES Advantages in DBB Ball Valve Solutions

As a professional valve manufacturer, J-VALVES provides complete DBB ball valve solutions, including:

  • API 6D compliant design

  • Customized pneumatic, electric, and hydraulic actuators

  • Precision machining and assembly

  • Strict pressure and leakage testing

Through advanced manufacturing technology and quality control systems, J-VALVES delivers reliable Pneumatic DBB Ball Valve and Automated DBB Valve solutions for global industrial projects.

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Nominal Size： 1 inch / DN25, range 1/4 to 12 inch Pressure Class： ASME Class 150, 19.6 bar at 38°C; Class 300 optional Body Material： ASTM B148 C95800 nickel aluminum bronze Body Type： Two piece, bolted Ball： C95800, SS316 hard faced optional Stem： C95800 or SS316, blowout proof Seat： PTFE, RPTFE, PPL, or reinforced PTFE Packing： PTFE or graphite combined packing End Connection： Threaded NPT / BSPT, flanged RF to ASME B16.5 optional Service Temperature： -29°C to +150°C standard, +200°C high temperature version Seawater Velocity Limit： About 6 m/s clean, 4.5 m/s with sand Design Standard： API 608, ASME B16.34 Test Standard： API 598, ISO 5208 Operation： Lever standard, pneumatic or electric optional
Size Range： 2 to 56 inch (DN50 to DN1400) Pressure Class： ASME Class 150 to 2500 / PN20 to PN420 Body Material： WCB, LCB, CF8, CF8M, CF3M, duplex, alloy steel Ball： Stainless with hard chrome, ENP, Stellite or tungsten carbide overlay Seat： PTFE, RPTFE, PPL, or metal Stellite faced Seat Arrangement： SPE, DPE (DIB-1), or combination (DIB-2) Packing： Live loaded graphite, ISO 15848-1 qualified Fire Test： API 607, also API 6FA and ISO 10497 Fugitive Emission： ISO 15848-1 class B or A, with temperature and cycle class stated Face to Face： ASME B16.10 short or long pattern End Connection： Flanged RF / RTJ to B16.5 and B16.47, butt weld to B16.25 Features： Double block and bleed, sealant injection, anti-static, anti-blowout stem Design Standard： API 6D, API 608, ASME B16.34, ISO 14313 Operation： Lever, gear, pneumatic, electric, hydraulic, gas over oil Sour Service： NACE MR0175 available
Nominal Size： 1-1/2 inch / DN40 Pressure Rating： 1000 WOG (68.9 bar cold working, non-shock) Body Type： Three piece, bolted end caps, four body bolts Body Material： ASTM A351 CF8 (304), CF8M (316) optional Ball： CF8, polished Ra 0.4 µm, full or reduced bore Seat： PTFE, RPTFE, PPL, or Stellite faced metal Body Gasket： PTFE to 180°C, graphite above Packing： PTFE V-ring to 200°C, graphite above End Connection： NPT, BSP, socket weld B16.11, butt weld B16.25, flanged RF Actuator Mounting： ISO 5211 F05 / F07 pad Air Supply： 0.4 to 0.7 MPa clean dry air Service Temperature： -29°C to +260°C, seat dependent Design Reference： MSS SP-110 general purpose, ASME B16.34 body wall Test Standard： API 598, ISO 5208
Nominal Size： 3/4 x 1/2 inch (DN20 x DN15), reduced bore Pressure Class： ASME Class 600 / PN100, 102.1 bar at 38°C Body Material： ASTM A182 F51 forged duplex, UNS S31803 PREN： Approximately 35 Ball： F51 with HVOF tungsten carbide or Stellite overlay Stem： F51, SS316 or 17-4PH, blowout proof Seat： RPTFE, Devlon, PEEK, or Stellite faced metal Bolting： B8M Class 2, alloy 718, or B7M for sour service End Connection： NPT, BSP, socket weld ASME B16.11, butt weld ASME B16.25 Bleed Port： Cavity bleed with plug or needle valve, lockable option Service Temperature： -29°C to +300°C, seat dependent Design Standard： API 6D, API 608, ASME B16.34 Test Standard： API 598, ISO 5208, cavity test through bleed port Sour Service： NACE MR0175 available