The Fisher™ 461 Increased Outlet Angle Sweep-Flo Valve is a self-cleaning, increased outlet angle valve engineered to handle the most demanding industrial applications . It is commonly used in the chemical and hydrocarbon industries to control residual oils and other coking liquids, as well as in power generation services where high-pressure drops, flashing, and slurry conditions are present .
The Fisher™ 461 Increased Outlet Angle Sweep-Flo Valve is a self-cleaning, increased outlet angle valve engineered to handle the most demanding industrial applications . It is commonly used in the chemical and hydrocarbon industries to control residual oils and other coking liquids, as well as in power generation services where high-pressure drops, flashing, and slurry conditions are present .
Featuring a unique Venturi-style outlet, the 461 valve is designed to reduce fluid velocity at the outlet, thereby minimizing damage from flashing, cavitation, and abrasion . Its robust construction and specialized design elements, such as the hardened tungsten carbide trim and the ENVIRO-SEAL™ packing system, work in concert to extend service life, reduce maintenance needs, and ensure reliable operation where other valves might fail .
Key Advantages:
Damage Reduction: The increased outlet size lowers fluid velocity, while appropriate trim material selection helps reduce damage from flashing, cavitation, and abrasion .
Self-Cleaning Action & Stable Flow: The unique cylinder-guided characterized plug provides stable guidance and a self-cleaning effect . It offers equal percentage Micro-Form flow characteristics for orifice sizes from 12.7 to 31.8 mm (0.5 to 1.25 in) and a modified parabolic characteristic for sizes from 38.1 to 114.3 mm (1.5 to 4.5 in) .
Anti-Fouling Flushing Connections: Flushing connections at the valve ends and an optional bonnet flushing connection help prevent coke buildup, with an extended bonnet also available .
Extended Trim Life: Tungsten carbide trim is available for the most severe services, significantly extending the life of the valve internals .
Enhanced Sealing: The ENVIRO-SEAL™ packing system improves stem sealing to help prevent process fluid leakage. These systems use live-loaded PTFE or graphite ULF packing to reduce maintenance .
For a quick overview, here are the key specifications of the Fisher 461 Valve.
| Feature | Description |
|---|---|
| Product Line | Fisher™ 461 |
| Valve Type | Increased Outlet Angle Sweep-Flo Valve |
| Primary Applications | Flashing, Cavitation, Venting |
| Flow Characteristic | Equal Percentage, Modified Parabolic |
| Body Materials | WCC, LCC, CF8M, CF8C, Duplex |
| Service Temperature | High Temperature |
| Pressure Rating | ASME |
| End Connection Types | Flanged, Buttweld, RTJ, Hub |
| Shutoff Class | Class IV (FCI 70-2), Class V (FCI 70-2) |
| Certifications | PED, CRN, NACE |
The Fisher™ 461 Sweep-Flo Valve is available in a range of increased outlet sizes to meet various application demands .
| Valve Size (NPS) |
|---|
| 2×3 |
| 3×4 |
| 4×6 |
| 6×8 |
| 8×10 |
Note: Valves with flanged or buttwelded ends are available in pressure classes from CL150 to CL1500, with sizes 2×3, 3×4, and 4×6 conforming to CL2500 grade . For more detailed technical specifications or custom options, please contact our sales team.
If you have any questions or are unsure about the correct Fisher™ 461 model for your application, please do not hesitate to contact the Kateteco sales team. Our technical experts are ready to assist you in selecting the perfect valve for your needs.
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KateTeco (Tianjin) Technology Co., Ltd. serves as an outstanding partner in the field of industrial fluid automation, specializing in the introduction and integration of high-end valves and instruments. We are committed to providing customers with safe, reliable, and intelligent system solutions. By leveraging global leading product resources and supported by systematic professional training and on-site technical assistance from Emerson’s experienced engineers, we ensure that customers can respond promptly and accurately to technical challenges.
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