Explore the Fisher™ NotchFlo™ DST Control Valve, engineered to handle cavitation and dirty liquids with solids up to 12.7 mm. Ideal for power, hydrocarbon, and chemical industries. Check full specs and applications.
The Fisher™ NotchFlo™ DST Control Valve is specifically engineered to handle dirty and cavitating liquid services where conventional control valves fail. It excels in applications involving high-pressure drops and fluids carrying solid particles. The valve utilizes a multi-stage pressure reduction principle with specially designed notches to manage pressure drops up to 290 bar (4200 psi) effectively, eliminating cavitation conditions . Its robust construction allows solids with diameters up to 12.7 mm (1/2 inch) to pass without clogging, making it a reliable solution for severe service applications in industries like power generation, hydrocarbon processing, and chemical plants .
Superior Cavitation Control: The multi-stage design splits the total pressure drop across several stages, effectively preventing cavitation and the associated damage and noise .
Clog-Resistant Design: Large, open flow paths allow solids up to 12.7 mm (1/2 inch) in diameter to pass through, ensuring reliable operation in dirty service applications .
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 metal seats provide tight shut-off (Class V per FCI 70-2) and minimize seat erosion .
Easy Maintenance: The cage-style trim can be disassembled and inspected without removing the valve body from the pipeline, significantly reducing maintenance time and costs .
Proven Reliability & Flexibility: Suitable for a wide range of valve types (globe and angle) in flow-up or flow-down directions, and available in various materials and connections for numerous industrial applications .
Power Industry: Boiler feed pump recirculation, condensate pump recirculation .
Hydrocarbon Processing: High-Pressure/Low-Pressure Separator letdowns (Hot & Cold HPS/LPS), produced water injection, crude unit charge pump recirculation .
Chemical & Energy Industries: High-pressure drop services with dirty or solids-laden fluids .
| Attribute | Specification |
|---|---|
| Brand | Fisher™ |
| Valve Model | NotchFlo™ DST Control Valve |
| Primary Function | Cavitation Control in Dirty Services |
| Max Pressure Drop | 290 bar (4200 psi) |
| Solid Particle Passage | Up to 12.7 mm (1/2 inch) |
| Flow Characteristic | Linear |
| Shutoff Class | Class V (FCI 70-2) |
| Valve Sizes | NPS 1, NPS 1-1/2, NPS 2, NPS 3, NPS 4, NPS 6, NPS 8 |
| Standard Materials | Carbon Steel, Stainless Steel, Alloy |
| Process Connections | Flanged, Butt-Weld, Threaded, Socket-Weld |
| Pressure Rating | ASME |
| Certifications | ATEX, CUTR, PED, CRN, NACE |
Integrating the Fisher NotchFlo™ DST Control Valve into your process ensures reliable performance in the most challenging liquid applications. Its ability to control cavitation while handling dirty fluids translates into reduced maintenance frequency, less unplanned downtime, and a longer service life for your flow control assets, providing an excellent return on investment.
For further technical details, specific material options, 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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