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, engineered by Emerson, is a high-performance control valve designed to handle severe service applications involving high pressure, temperature, and erosive or corrosive fluids. With its rugged one-piece angle body design, the FB valve provides exceptional durability, stability, and flow control performance in demanding process environments such as power generation, refining, petrochemical, and chemical industries. The unique angle body configuration of the Fisher FB valve allows for efficient fluid turning and optimized flow control, reducing turbulence, erosion, and vibration. This makes it particularly well-suited for flashing, cavitating, and erosive services, where conventional globe valves would wear rapidly. Equipped with Fisher’s advanced trim technologies, including anti-cavitation and noise-attenuation options, the FB valve delivers precise throttling, long service life, and reliable operation even under extreme conditions. It can be paired with Fisher actuators and digital valve controllers for enhanced control accuracy and predictive diagnostics.
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).