The Fisher™ CAV4 Valve is engineered for severe service applications involving clean, cavitating liquids with pressure drops exceeding 207 bar (3000 psi). At its core is the advanced Cavitrol™ IV trim, which is designed with an expanding flow area where each stage is larger than the last. This innovative design ensures highly effective operation by allowing over 90% of the total pressure drop to occur in the initial stages where the risk of cavity formation is minimal, thereby preventing cavitation and protecting the valve and downstream piping.
The Fisher™ CAV4 Valve is engineered for severe service applications involving clean, cavitating liquids with pressure drops exceeding 207 bar (3000 psi). At its core is the advanced Cavitrol™ IV trim, which is designed with an expanding flow area where each stage is larger than the last. This innovative design ensures highly effective operation by allowing over 90% of the total pressure drop to occur in the initial stages where the risk of cavity formation is minimal, thereby preventing cavitation and protecting the valve and downstream piping.
Ideal for industries such as power generation (e.g., boiler feedwater start-up, boiler feed pump recirculation) and hydrocarbon processing (e.g., produced water injection, offshore platforms), the CAV4 Valve delivers extended service life, reduced maintenance costs, and enhanced process reliability.
Prevents Cavitation: The multi-stage pressure reduction design effectively manages high-pressure drops to eliminate cavitation damage.
Extended Service Life: Features a protected seat design that separates the shut-off function from the throttling area, safeguarding seat surfaces from high-velocity throttling flow. Hardened trim materials provide excellent erosion resistance. The cage-style trim can be disassembled and inspected without removing the valve body from the pipeline, simplifying maintenance.
Tight Shut-off: Soft metal-to-metal seats ensure tight shut-off (Class IV & VI per FCI 70-2) without requiring periodic lapping.
High Pressure Capability: Designed to handle pressure drops up to 552 bar (8000 psi).
Compliant with International Standards: The valve carries multiple certifications (ATEX, CUTR, PED, CRN, NACE), ensuring suitability for use in various regulatory environments.
Boiler feedwater systems
Pump recirculation (minimum flow protection)
High-pressure drop water services
Clean, cavitating liquid processes
| Attribute | Specification |
|---|---|
| Brand | Fisher™ |
| Valve Model | CAV4 Valve |
| Trim Technology | Cavitrol™ IV |
| Primary Application | Cavitation Control in Clean Liquids |
| Max Pressure Drop | 552 bar (8000 psi) |
| Flow Characteristic | Linear, Quick Open, Characterized |
| Shutoff Class | Class IV & VI (FCI 70-2) |
| Valve Sizes | NPS 2, NPS 3, NPS 4, NPS 6 |
| Standard Materials | Carbon Steel, Alloy |
| Process Connections | Flanged, Butt-Weld |
| Pressure Rating | ASME |
| Certifications | ATEX, CUTR, PED, CRN, NACE |
For further technical details, specific material recommendations, or to discuss your application requirements, please do not hesitate to contact the sales team at Kateteco. We are here to provide you with the ideal solution for your demanding flow control 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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