Home > Product > Ball Valve > Based on Body Construction > Fully Welded Ball Valve
When long-term performance, zero leakage, and tamper-proof integrity are mission-critical, the Fully Welded Ball Valve stands out as the ultimate choice. At Perfect Engineers, we manufacture fully welded ball valves that are built for buried pipeline systems, natural gas lines, fuel distribution, and district heating applications—where safety, durability, and low maintenance are non-negotiable.
Designed as a permanent solution, these valves eliminate body leakage paths and reduce the need for external intervention over decades of operation.
A Fully Welded Ball Valve features a single, permanently welded body with no bolted joints. This robust, tamper-resistant construction eliminates leak points between body sections, ensuring superior pressure containment and safety.
The valve body is typically forged and fully welded shut, making it suitable for underground or buried service, even in extreme environments or remote areas.
| Parameter | Specification |
|---|---|
| Size Range | 2” to 36” |
| Pressure Class | Class 150 to Class 1500 / PN10–PN100 |
| Design Standard | API 6D, ISO 17292, ASME B16.34 |
| Body Construction | Fully welded forged steel |
| Seat Options | Soft-seated (PTFE, RPTFE), Metal-seated |
| End Connections | Butt Weld, Socket Weld, Flanged |
| Operation | Manual, Pneumatic, Electric (ISO 5211 mount) |
| Fire-Safe Certified | API 607, ISO 10497 (on request) |
| Temperature Range | -46°C to +200°C |
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| Feature | Fully Welded Valve | Split Body Valve |
|---|---|---|
| Leakage Paths | None | Multiple flanged joints |
| Maintenance Need | Minimal | Moderate |
| Best for Buried Service | Yes | No |
| Welding Compatibility | Direct to pipe | Needs flanged adapter |
| Cost | (Long-term savings) | (Lower initial cost) |
Every valve is supplied with:
Yes. We supply them with ISO 5211 pads and pneumatic/electric actuators.
Yes. Fire-safe designs as per API 607 / ISO 10497 available on request.
We offer butt-weld, socket-weld, and flanged ends for integration flexibility.
Not the body—only stem seals and seats can be accessed in some versions (optional top access).
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