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Looking for zero-leakage, tamper-proof valves that perform reliably in buried, high-pressure, or safety-critical applications? At Perfect Engineers, we manufacture and supply Welded Ball Valves (also known as Fully Welded or Butt Weld Ball Valves) designed for gas pipelines, steam networks, underground lines, fire protection systems, and district heating plants.
Our welded valves offer maintenance-free performance, compact construction, and exceptional sealing integrity—making them ideal for long-term buried or high-risk environments where flange joints are undesirable.
A Welded Ball Valve is a valve in which the valve body and pipe ends are permanently joined by welding, eliminating the use of flanges or bolts. These valves are:
When long-term reliability, zero leakage, and secure pipeline integration are essential, a Butt Weld Ball Valve is the perfect choice.
Need a compact, strong, and leak-proof valve for high-pressure or small-bore piping systems? At Perfect Engineers, we manufacture
| Parameter | Specification |
| Size Range | ½” to 24” (DN15 to DN600) |
| Pressure Rating | Class 150 to Class 1500 / PN16 to PN160 |
| Body Materials | WCB, A105, SS316, SS304, Duplex, Alloy 20 |
| Seat Options | PTFE, PEEK, Graphite, Metal Seated |
| End Connections | Butt Weld, Socket Weld, Plain End |
| Operation | Manual, Gear, Pneumatic, Electric |
| Standards | ASME B16.34, API 6D, ISO 5211, API 607 |
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Yes—all our valves come with ISO 5211 actuator pads and are compatible with electric or pneumatic actuators.
Absolutely—our designs conform to API 607 fire-safe standards, ideal for gas, oil, or flammable services.
Top entry welded valves allow access; fully welded body valves are non-serviceable by design.
Yes—each welded ball valve is hydro-tested and comes with MTC, test certificates, and QA/QC documentation.
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