Moving Mountains: Engineering the Delivery of a Massive 20” API 6D Motor Operated Ball Valve
Every major industrial infrastructure relies on absolute control. When fluid management requires uncompromising reliability under extreme pressure, the engineering world looks to heavy-duty, precision-crafted valves.
We are proud to announce the successful delivery and supervised commissioning of a massive 20-Inch 600# API 6D Motor Operated Ball Valve (MOBV) at the Malhipur site.
This project represents a crucial milestone for our engineering team, combining high-spec fabrication with seamless technical supervision to ensure smooth field operations.
The Engineering Behind the Valve: A Technical Overview
Designed for high-performance and harsh environments, this 2-piece, side-entry, long-pattern Trunnion Mounted Ball Valve is engineered to exact standards. Below is a breakdown of the critical technical specifications successfully implemented:
| Feature | Technical Specification |
|---|---|
| Size & Rating | 20" (Class 600) |
| Design Standard | API 6D |
| Body Material | Cast Steel ASTM A216 Gr. WCB (+3mm Corrosion Allowance per ASME B16.34) |
| Internals & Trim | Ball: ASTM A105 + 75‑micron ENP Stem: ASTM A564 TP.630 H1150D + 75‑micron ENP Seat: Devlon (–50 °C to 140 °C) |
| Sealing System | Viton O‑rings with Anti‑Explosive Decompression (AED) AED + Graphite packing |
| Actuation | Rotork IQ20F14B4 · 144 RPM · IW9R/971:1 Ex db IIB T4 (hazardous area) |
| Operating Time | 100 to 130 seconds (full stroke) |
Key Innovation Highlights of the Project
A project of this scale requires more than off-the-shelf parts; it requires highly customized solutions to overcome site challenges. Here is what made this delivery truly innovative:
- Integrated Stem Extension: Built with a 2.5-meter stem extension from the centerline to the mounting base face, allowing the heavy-duty Rotork electrical actuator to sit safely and accessibly above ground level.
- Premium Pup Piece Integration: The valve comes with a 0.5-meter welded pup piece constructed from robust API 5L Gr. X60 PSL2 steel, optimizing the transition for standard field welding via ASME B16.25 Butt Weld Ends (BWE).
- Uncompromising Safety & Testing: To ensure maximum integrity in high-stress environments, 100% Radiography Testing (RT) was conducted per ASME B16.34. Furthermore, stringent Impact Testing was carried out on all pressure-containing components, including the body, tailpiece, ball, stem, and seat holder.
- Third-Party Validation: Full peace of mind was achieved through strict EN 10204 3.2 Stage Inspection Certification, proving that every phase of manufacturing adhered strictly to global quality benchmarks.
Turning Blueprints into Reality at Malhipur
Delivery is only half the battle. Our dedicated engineering specialists provided comprehensive on-site supervision during the commissioning phase at Malhipur.
From validating the precise 100-to-130-second operating stroke of the Rotork electrical actuator to supervising the integration of advanced stem, drain, and vent sealant injection systems, our team ensured that the valve integrated flawlessly into the pipeline infrastructure.
Partner with Us for Your Flow Control Needs
Whether your project requires advanced API 6D compliant trunnion valves, custom-engineered stem extensions, or expert on-site commissioning supervision, we have the engineering capabilities to execute flawlessly on a tight schedule.
Have an upcoming pipeline project or need custom flow control solutions? Let us know how we can collaborate to elevate your infrastructure!