Pumps & Valves · VX-250
VX-250 Trunnion-Mounted Ball Valve
Full-bore API 6D isolation with fail-safe actuation.
A three-piece trunnion-mounted ball valve with double block-and-bleed, fire-safe seats and a scotch-yoke pneumatic actuator. Built for pipelines, terminals and process isolation where tight shut-off is mandatory.
- full bore
- DN 250
- full bore
- ASME rating
- Class 600
- ASME rating
- leakage, Rate A
- 0
- leakage, Rate A
- capable
- SIL 3
- capable
Datasheet Rev 04 · 2026-05 · Prices on application
● Interactive model · VX-250
Technical specifications
Datasheet Rev 04 · 2026-05
Valve
- Size
- DN 50 – DN 600 (2" – 24")
- Pressure class
- ASME 150 – 900
- Bore
- Full bore, piggable
- Seats
- Self-relieving, DBB
- Leakage
- ISO 5208 Rate A
Actuation
- Actuator
- Scotch-yoke, spring return
- Supply
- 4 – 8 bar instrument air
- Stroke time
- < 8 s (DN 250)
- Controls
- Solenoid + limit switch box
Performance
Hover the curves for values
View data table
| Ball travel (%) | Rated Cv (%) |
|---|---|
| 0 | 0 |
| 10 | 0.5 |
| 20 | 2.5 |
| 30 | 6.3 |
| 40 | 12.2 |
| 50 | 20.3 |
| 60 | 30.9 |
| 70 | 44 |
| 80 | 59.9 |
| 90 | 78.5 |
| 100 | 100 |
Curves are measured on ORVANT's closed-loop test bed and reproduced to the tolerance class stated on the certificate. Operating windows, trims and speeds are selected by our application engineers for your exact duty point.
Get a duty-point selectionDimensions
Envelope drawing
- Face-to-face
- 568 mm (ASME B16.10)
- Height to actuator top
- 1,240 mm
- Flange OD
- 559 mm
- Weight
- 612 kg
Materials
- Body
- ASTM A216 WCB · A995 4A option
- Ball
- A182 F316 + ENP
- Stem
- 17-4PH
- Seats
- Devlon / PEEK
- Packing
- Graphite, ISO 15848 BH
Applications
- 01Pipeline isolation
- 02Tank farms
- 03Emergency shut-down
- 04Pig launchers
- 05Compressor stations
Certifications & standards
API 6D
Pipeline valves
API 607
Fire-safe tested
IEC 61508
SIL 3 capable
ISO 9001:2015
Quality management, all manufacturing sites
Datasheet & downloads
Engineering files on request
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[RFQ]Request a quote
Tell us the duty.
We’ll engineer the answer.
- 24-hour technical responseFrom an application engineer — never a call centre.
- Engineered, not just pricedDuty review, selection and sizing come with every quote.
- Full documentationDatasheets, GA drawings and curves with each proposal.
- Confidential by defaultMutual NDA on request before you share drawings.
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