Integral DBB Ball Valves

Monolithic Double Block and Bleed design: welding-free connections for maximum leak safety in space-constrained installations

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What Are Integral DBB Ball Valves?

Integral DBB ball valves are designed to offer maximum safety through a monolithic design that eliminates the flanged connections of the valve body, significantly reducing any risk of leakage to the external environment.

These compact ball valves offer the same advantages of the split body design and are internally equipped with a double seal. They are particularly suitable for applications with space constraints such as offshore platforms or FPSO.

Common applications include: offshore platforms and FPSO installations where external leak prevention and space savings are paramount, and any service requiring a DBB function with welding-free body connections.

✓ Welding-free body connections — maximum external leak prevention in a compact monolithic block

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

End Connections

Threaded | Welding Ends | Flanged | Hub | Integral (welding-free)

Models

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

Type

Floating | Trunnion | Integral

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

Monolithic Body

The integral design eliminates the flanged connections of the valve body, significantly reducing any risk of external leakage compared to split body or bolted designs.

Double Seal

Internally equipped with a double seal, providing the same sealing performance advantages as the split body DBB design.

Maximum Safety

The combination of monolithic construction and double seal delivers the highest level of safety for critical applications where external leakage is unacceptable.

Space Saving

The compact integral body is particularly suitable for installations with space constraints, such as offshore platforms and FPSO units.

Configuration Options

Ball valves can be customized to meet your specific requirements:

Design

Integral DBB (Double Block & Bleed)
Integral DB (Double Block, without bleed)

Type

Floating
Trunnion
Split Body

End Connections

Threaded
Welding Ends
Flanged
Hub
Integral / Welding-Free

Applications

Ball Valves are the ideal choice for:

Offshore platforms and FPSOwhere external leakage prevention and minimal footprint are critical requirements

High-pressure services where flanged body connections represent an unacceptable leak risk

DBB function in space-constrained installationswhere the monolithic design replaces separate valve assemblies

Applications requiring double sealing with no external body joint exposed to process fluid

Need a different configuration?

Explore our DB / DBB valves for split body double block designs, or DBB Sampling & Injection for dedicated sampling and injection service.

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