Bonney Forge’s Double Block and Bleed Valves (DBB valves) are meticulously engineered for enhanced safety and efficiency in various industrial applications. These valves are available in a comprehensive range of designs, materials, sizes, pressure classes, and end connections, conforming to ASME B16.34 and, where applicable, API 6D or BS EN ISO 17292 standards.

The DBB valves are fire-safe test approved and feature electrical continuity between the ball, stem, and body, ensuring operational safety. They are available in cryogenic and high-temperature metal-seated configurations, providing versatility for different environments. The forged construction enhances mechanical properties, pressure retention, and overall quality.

Key Features:

• Design: Floating or trunnion mounted ball valves in the main bore, each bi-directional and designed for full differential pressure at ambient and low temperatures.
• Construction: Full die-forged structure for all pressure-containing parts, with an integral body comprising two ball valves through the main bore and a needle bleed valve from the cavity between them.
• Sealing: Standard primary gasket design is Lip-Seal type, with a secondary emergency seal for fire safety.
• Operation: High-quality sealing products reduce leakage points, ensuring improved safety, space, and weight efficiency.
• Performance: Compact design allows for uninterrupted flow with negligible pressure drop and reduced stresses from loading and vibration.

Specifications:

• Size Range: 1/2 NPS to 8 NPS
• Pressure Class: 150 to 2500
• Standards: ASME B16.34, ISO 17292, API 608, API 6D for design; API 598 for inspection and testing.