HomeProductsThreaded Ball Valve SeriesThree Piece High Flat Welded Ball Valve

Three Piece High Flat Welded Ball Valve

Designed for high-integrity pipeline systems, our Three Piece High Flat Welded Ball Valve combines superior sealing performance with exceptional durability. The unique flat-faced welding ends provide perfect alignment for high-purity and high-pressure applications, while the three-piece construction enables easy maintenance without pipeline disconnection. Manufactured from premium stainless steel with full-bore design, this valve ensures zero contamination and minimal pressure drop in critical flow control systems.

1、Structural Advantages
• Three-piece bolted body for in-line maintenance access
• Flat welding ends (BW) for seamless pipeline integration
• Full-bore design maintains 100% flow efficiency
• Fire-safe construction per API 607 standards
• Double-sealed stem with anti-blowout protection


2、Performance Benefits
• 30% stronger weld joints than standard designs
• Bubble-tight shutoff (ANSI Class VI seat leakage)
• Reduced operating torque through precision bearings
• High-cycle durability (200,000+ operations tested)
• Zero cavity design prevents media entrapment


3、Technical Parameters

Parameter Standard Model High-Purity Option
Body Material 316SS 316L SS Electropolished
Pressure Rating 1000 PSI (69 bar) 1500 PSI (103 bar)
Size Range ½" – 12" ½" – 8"
End Connection Butt Weld (BW) Orbital Welding Ready
Temperature Range -40°F to 450°F -60°F to 600°F
Seat Material RPTFE UHMWPE
Ball Finish 32 Ra μm 16 Ra μm Mirror Finish

4、Industry Applications
• Pharmaceutical – CIP/SIP processes
• Semiconductor – ultra-high purity gas systems
• Oil & Gas – pipeline isolation and blending
• Chemical Processing – corrosive media handling
• Power Generation – steam and coolant control


5、Quality Certifications
• ISO 9001:2015 certified manufacturing
• SIL 2/3 compliance documentation available
• ASME B16.34 pressure testing compliance
• Material Traceability (EN 10204 3.2 certificates)


6、Specialized Services
• X-ray weld inspection reports available
• Cleanroom packaging (Class 100 optional)
• Actuator pre-assembly with ISO 5211 platform

If you have any enquiry about quotation or cooperation,please feel free to email us at or use the following enquiry form. Our sales will contact you within 24 hours. Thank you for your interest in our products.

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