SB & SBB Ball Valves

Single Block and Bleed design: Compact valves integrating a main ball valve and bleed function for reduced footprint and simplified maintenance

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What Are SB & SBB Ball Valves?

SBB (Single Block and Bleed) ball valves are compact valves that integrate a main ball valve for blocking flow and one or more bleed valves for releasing pressure or taking samples. They offer advantages such as reduced footprint, costs, and leaks, increased safety, and simplified maintenance.

SB (Single Block) ball valves are also available without the bleed function and come in a wide range of sizes, ratings, materials and types.

Common applications include: process isolation with integrated pressure relief, sampling points, and any service where a single blocking valve with bleed capability replaces a separate valve-and-bleed assembly.

Main block valve and bleed in one body for reduced costs, fewer leak sources, simplified maintenance

Technical Specifications

Pressure Rating

ANSI 150 (PN 10–16) | ANSI 300 (PN 25–40) | ANSI 600 (PN 63–100) | ANSI 900 | ANSI 1500 | ANSI 2500 | 800 LBS | 6,000 PSI | API 6A up to API 15,000

Size Ranges

1/2" | 3/4" | 1" | 1½" | 2" | 3" | 4" | 6" | 8 RB

Models

790 FxF | 791 MxF | 793 BWxBW | 794 PExF | 795 BWxF | 796 SWxF | 797 FLxF | 798 FLxFL | 890 FxF | 891 MxF

End Connections

Threaded | Welding Ends | Threaded/Welding End | Flanged | Flanged/Threaded | Hub | Split Body

Type

Floating | Trunnion

Materials

Carbon Steel (ASTM A105N/A350 LF2) | Stainless Steel 316 | Super Duplex | Inconel 625/625/718

Certifications

PED (DN >25) | Fire Safe | Fugitive Emission (ISO 15848-1/2) | CRN

Temperature Range

-196°C up to +650°C

Key Features

Integrated Block and Bleed

The SBB design combines a main ball valve for flow blocking with one or more bleed valves for pressure release or sampling — eliminating separate bleed assemblies and associated leak paths.

Reduced Footprint and Costs

By integrating block and bleed functions in a single compact body, the SBB reduces installation footprint, overall costs, and the number of potential leak sources compared to separate valve assemblies.

Increased Safety

The integrated design minimizes the number of external connections and potential failure points, enhancing overall system safety.

Vent Ball Valve Option

From model 900 to 918, vent with ball valves is available, extending the functional range of the SB/SBB family.

Configuration Options

Ball valves can be customized to meet your specific requirements:

Design

• Single Block (SB)
• Single Block & Bleed (SBB)

Type

• Floating
• Trunnion
• Split Body

End Connections

• Threaded (FxF, MxF)
• Butt Weld (BWxBW, BWxF)
• Socket Weld (SWxF)
• Plain End (PExF)
• Flanged (FLxF, FLxFL)

Applications

Ball Valves are the ideal choice for:

Process isolation with integrated pressure relief where a separate bleed valve would add cost and leak risk

Sampling points requiring controlled pressure release before sample extraction

Installations requiring minimized footprint and weight compared to separate valve and bleed assembliesmaintenance

Wide range of industrial services in Oil & Gas, Refining & Petrochemical, and Marine & Navy applicationsconfigurations (see dedicated page)

Need a different configuration?

Explore our SB / SBB valves for single block designs, or Integral DBB valves for welding-free monolithic construction

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