18061659285
ASTM A105N 1500LB Flanged Double Block and Bleed (DBB) Ball Valve
Product Parameters
Valve Type |
DBB Ball Valve |
Design |
Floating Ball (small sizes) / Trunnion-Mounted (large sizes) |
Connection Size |
1" – 16" (DN25 – DN400, larger sizes available upon request) |
Pressure Rating |
Class 1500, Class 300/ 600 / 900 / 2500 Optional |
Temperature Range |
-29°C ~ +425°C (depending on materials and seat design) |
Body Material |
ASTM A105N, A350 LF2, A182 F304 / F316, F51, F11, F22, Other materials available upon request |
Seat Material |
PTFE / RPTFE / PEEK / Metal Seated |
End Connection |
Flanged (RF / RTJ Optional) |
Body Structure |
Bolted Body / Split Body |
Port Design |
Full Port / Reduced Port |
Operation |
Manual Lever, Electric Actuator / Pneumatic Actuator (Optional) |
Design Standards |
Designed in accordance with API 6D, ASME B16.34, BS 5351 |
Fire-Safe Design |
Designed in accordance with API 607 / API 6FA (optional) |
Brand |
SLVCN |
Key Features
True Double Block & Bleed (DBB) Design
Two independent seals with a bleed port ensure complete line isolation and safe pressure relief.
Independent Operation for Flexible Isolation
Each ball can be operated independently for selective upstream or downstream isolation during maintenance.
Bleed Port for Pressure Verification
Allows instant cavity pressure release and visual leak verification before servicing.
Forged High-Strength Body for High-Pressure Service
Forged steel body delivers reliable performance under Class 1500 high-pressure conditions.
Product Details
SLVCN ASTM A105N 1500LB Flanged Double Block and Bleed (DBB) Ball Valve is a high-pressure isolation valve designed for critical pipeline applications where maximum safety and zero leakage are required. Its true Double Block & Bleed (DBB) design uses two independent sealing elements to fully isolate the pipeline while safely relieving trapped pressure through a dedicated bleed port.
Manufactured with a forged ASTM A105N carbon steel body, this DBB ball valve provides excellent mechanical strength, pressure resistance, and long-term reliability under Class 1500 service conditions. Available in floating or trunnion-mounted design depending on valve size, it is engineered for demanding high-pressure operating environments.
The valve is widely used in Oil & Gas, Chemical & Petrochemical, refining, and high-pressure industrial pipeline systems, with body materials, seat materials, pressure class, and valve configuration customizable to suit specific service conditions and project requirements.
The valve supports lockout/tagout (LOTO) safety devices and can be upgraded with pneumatic or electric actuators for automation and remote operation.
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