Description
Product Description
The Fisher V250 is a heavy-duty, flangeless throttling ball valve designed for flow control in gas transmission pipelines, gas distribution systems, and liquid pipelines. It offers three sealing configurations—single ball seal, flow ring seal, and dual-seal construction—to meet various operational requirements. Suitable for high-pressure, high-flow, and demanding media applications, it provides precise throttling performance, while its compact flangeless design makes it ideal for space-constrained piping systems.
Specifications
| Specifications | Details |
|---|---|
| Certifications | CUTR, PED, CRN, Fugitive Emission, NACE |
| Flow Characteristics | Linear |
| Material | Carbon Steel, Stainless, Duplex |
| Operating Temperature | Standard Temperature |
| Pressure Class | ASME |
| Process Connection Type | Flanged |
| Shutoff Class | Class IV (FCI 70-2) |
| Valve Size | NPS 4, NPS 6, NPS 8, NPS 10, NPS 12, NPS 16, NPS 20, NPS 24 |
| Other Configurations | Contact your local Emerson business partner or sales office to learn about additional specifications or options for this product. |
Features
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The valve’s tapered-polygon ball-to-shaft connection and clamped splined actuator linkage work together to eliminate any lost motion or deadband in the drive train, ensuring precise and responsive control performance.
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Featuring a reduced ball port design, the valve delivers a modified equal percentage flow characteristic that provides excellent throttling control across various flow conditions.
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For challenging sour service applications, the valve offers material options that fully comply with NACE MR0175-2002 requirements, making it suitable for handling corrosive environments.
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Its pressure-balanced drive shaft incorporates PTFE-lined bearings and a pressure-assisted sealing arrangement, significantly extending the valve’s service life while maintaining reliable operation.
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The innovative two-piece ball and shaft assembly design simplifies maintenance by allowing complete trim overhaul with minimal parts replacement, reducing downtime and service costs.
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An optional live-loaded packing system is available, featuring ultra-smooth shaft surfaces and dynamic loading to ensure superior sealing performance in demanding operating conditions.
INSTRUBESTdelivers high-performance Fisher V250 Control Valves that combine Emerson’s proven engineering with our competitive pricing and reliable supply chain. These heavy-duty valves are built to last in demanding pipeline applications, featuring precision flow control and sour service compliance. We maintain ready stock of common configurations for fast delivery, and our technical support team provides end-to-end assistance—from selection to after-sales service—ensuring your operations run smoothly with minimal downtime.

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