Double Block and Bleed Valves

Engineered for you

PJ Valves Modular DBB solutions—available in both trunnion-mounted and floating designs—provide compact, low-leak, and highly reliable isolation for process and instrument applications.

Certified & Tested

Manufactured in accordance with ASME B16.34, EEMUA 182, and API 6A. Each DBB—whether trunnion-mounted for high-pressure process service or floating-type for compact instrument applications—is verified through stringent testing including API 6D / API 6A performance validation, fire-safe certification to API 607 and API 6FA, and fugitive emission compliance to ISO 15848-1. With optional SIL 3 capability, ATEX compliance, CE/PED conformity.

Product Range

We manufacture modular Double Block & Bleed (DBB) valves in full compliance with ASME B16.34, EEMUA 182, and API 6A/API 6D standards, while also meeting specific customer and project requirements. Each DBB valve is engineered to deliver true dual isolation with reliable bleed capability, ensuring superior safety, leak integrity, and operational performance.

Floating Size Range -1/2" to 8"
Pressure rating - Class 150 to 2500
Trunnion Size Range - 1" to 24"
Pressure rating - Class 150 to 2500, API 10000 PSI
Bore - Full or Reduced
Operation - Manual
Construction - 3 Piece Body Design Side Entry, Cast or Forged

Material Scope

We specialize in meeting stringent material specifications, including NORSOK, and accommodating diverse end-user requirements for both metallic and non-metallic components. With increasingly severe upstream operating conditions, specifications now extend beyond primary valve components to include bolting and operator materials. Through established partnerships with our supply chain, PJ Valves ensures full compliance with any project specification, delivering reliability and integrity in every solution.

Body material

Carbon Steel
Stainless Steel
Duplex / Super Duplex Stainless Steel
Alloy Steel
Nickel Al Bronze
Nickel Alloys, Titanium & other exotics

Trim material

Stainless Steel
Duplex / Super Duplex Stainless Steel
Alloy Steel with Hard Coating (ENP, Chrome, Tungsten Carbide)
Nickel Alloys, Titanium & other exotics

Seat Materials

Soft – PTFE ,RPTFE, PEEK,NYLON,DEVLON
Metal- CRC, TCC, Stellite HVOF Coatings & Nickel fuse coatings

Features

Design Standard: ASME B16.34/EEMUA 182 /API6A

PJ Valves’ Double Block & Bleed (DBB) valves are engineered to provide high-integrity isolation and safety in critical process and instrument applications. Combining dual isolation with a central bleed, these valves ensure positive verification and reliable containment even under severe operating conditions.

Features

Modular Compact Design DBB
Flexible End Connections
Dual Isolation With Central Bleed
Emergency Sealant injections
Operation Requires minimal effort
Locking and anti-tamper arrangements

Options

Ball – Ball – Ball Combination available
Stem extension
Compact Flanges
Hub ends
Weld Overlays Wetted area or Seal area