Fisher™ FB Angle Valves
Fisher FB angle valves are used with compressible fluids on special applications requiring maximum noise attenuation capability and high capacity. Typical applications include main steam reducing valves and compressor bypass valves. FB valves are also commonly used for sour gas applications in petrochemical and gas processing plants.
The Fisher™ FB Angle Valve, designed by Emerson, is a rugged and versatile control valve built to deliver precise flow regulation and dependable performance in high-pressure, high-temperature, and corrosive service applications. Engineered for severe and general service conditions, the FB Angle Valve provides smooth throttling, excellent flow capacity, and extended service life, making it ideal for steam, gas, liquid, and slurry control in power generation, refining, and industrial processes. The angle-body configuration minimizes flow path changes, reduces erosion, and simplifies piping layouts — particularly in applications involving flashing fluids or erosive slurries. The Fisher FB valve can be equipped with a wide range of trim options, including Cavitrol™ III cages, to handle cavitation, noise, and vibration while maintaining tight shutoff. Available in a broad selection of materials, pressure ratings, and actuator configurations, the FB Angle Valve offers exceptional versatility and reliability in both onshore and offshore process environments.
Technical Specification of Fisher™ FB Angle Valves
- Certifications
- CUTR, PED, CRN, Fugitive Emission, NACE
- Critical Service
- Noise Abatement, Steam Conditioning, Outgassing
- Flow Characteristics
- Linear
- Material
- Carbon Steel, Stainless, Duplex, Alloy, Cast Iron
- Operating Temperature
- Standard Temperature, High Temperature
- Pressure Class
- ASME
- Process Connection Type
- Flanged, Butt Weld, RTJ
- Shutoff Class
- Class II (FCI 70-2), Class III (FCI 70-2), Class IV (FCI 70-2), Class V (FCI 70-2)
- Valve Size
- 8 x 12, 10 x 16, 12 x 16, 12 x 18, 12 x 20, 16 x 24, 20 x 30, 24 x 36, 30 x 36, 36 x 42, 42 x 48
- Valve Size Standard
- NPS
Feature of Fisher™ FB Angle Valves
- Whisper Trim™ III or WhisperFlo™ cages used in FBD or FBT valves can reduce noise produced by high flow rates and large pressure drops.
- Regeneration of valve noise is significantly reduced by reducing the outlet flow velocity with an expanded outlet design.
- The design eliminates gasketing problems caused by thermal expansion and contraction of long parts, such as the cage assembly.
- The ENVIRO-SEAL™ or HIGH-SEAL packing system options are available. These packing systems provide excellent sealing, guiding, and loading force transmission.
- A spring-loaded seal ring with PEEK anti-extrusion rings is available on FBT valves for Class V shutoff up to 316°C (600°F). Bore seal is available on FBD valves for Class V shutoff above 316°C (600°F).