1. Comprehensive Technical Specifications
Component & System Parameter | Standard Industrial Specification & Field Options |
Brand / Manufacturer | SDF |
Valve Classification | Ball Valve / Floating Ball Valve / 2-Piece Split Body |
Drive / Actuation Mode | Manual Handle Operated (Lever Operated with Locking Device) |
Design Standards | API 6D, ASME B16.34, API 608, ISO 17292 |
Nominal Size Range | DN15 to DN200 / 0.5 Inch to 8 Inch |
Pressure Ratings | ASME Class 150, Class 300 / PN16, PN25, PN40 |
Body & Cap Metallurgy | ASTM A351 CF8M (Stainless Steel 316) / ASTM A351 CF8 (SS304) |
Ball & Stem Metallurgy | ASTM A182 F316 Stainless Steel (High-Polished Mirror Finish) |
Sealing Seat Matrix | High-Temperature Reinforced PTFE (RPTFE), PEEK, or Virgin PTFE |
End Connection Interface | Flanged Ends Raised Face (RF to ASME B16.5 / DIN EN 1092-1) |
Applicable Fluid Profile | High-Temperature Steam, Refined Oils, Natural Gas, Potable Water |
Safety System Configurations | Anti-Blowout Stem, Anti-Static Device, Fire-Safe Design (API 607) |
2. Key Features and Engineered Advantages
1. High-Purity Stainless Steel 316 Body: The pressure-retaining body parts are cast from premium SS316 alloy, providing superior corrosion protection against brackish water, organic acids, and volatile industrial chemicals while maintaining high structural integrity in high-temperature applications.
2. Dynamic Pressure-Assisted Sealing: In the closed position, upstream line pressure pushes the floating ball slightly downstream into the resilient polymer seat ring. This structural deflection achieves a bubble-tight, zero-leakage seal (FCI 70-2 Class VI), providing reliable isolation for volatile gas and steam lines.
3. Unobstructed Full-Bore Flow Chamber: The internal bore diameter aligns perfectly with the adjacent piping diameter. This straight-through design eliminates internal pockets, minimizes fluid turbulence, and delivers exceptionally high flow coefficients ($C_v$) while keeping localized pressure drops low.
4. Anti-Blowout Stem & Anti-Static Protection: The stem is engineered with an internal bottom shoulder that prevents stem blowout under high internal line pressures. Integrated grounding springs maintain permanent electrical path continuity between the ball, stem, and valve casing to safely discharge static build-up.
5. Maintenance-Friendly 2-Piece Architecture: The split-body configuration ensures stable pressure containment while remaining easy to service. The internal components, including seats and stem packing, can be inspected and replaced with standard tools, reducing routine plant maintenance costs.
3. Typical Industry Applications
The SDF flanged stainless steel floating ball valve handles dependable isolation across major utility and process loops:
1. Industrial Steam and Utility Lines: Plant boiler supply connections, condensate return loops, heat exchanger isolation, and high-temperature utility distribution.
2. Oil & Petrochemical Infrastructure: Refined product transfer lines, chemical dosing skids, blending manifold blocks, and low-pressure hydrocarbon piping.
3. Water Utility & Treatment Facilities: Reverse osmosis (RO) desalination manifolds, municipal water treatment piping, and industrial wastewater treatment networks.
4. Food, Beverage & Light Chemical Plants: Sanitary utility services, ingredient feed loops, tank drainage lines, and clean air distribution headers.
4. Quality Assurance and Factory Compliance Testing
To guarantee zero-leakage performance and long service life in critical processes, every SDF floating ball valve passes strict validation:
Hydrostatic Body Casing Pressure Test: The full cast housing is hydrostatically pressure-tested at $1.5 \times$ its maximum rated design pressure to verify structural density and eliminate any micro-porosity defects.
API 598 Dual-Direction Seat Sealing Diagnostic: The sealing interfaces undergo high-pressure liquid and low-pressure pneumatic seat testing to verify absolute zero-leakage performance under nominal working conditions.
Torque and Actuation Quality Inspection: The manual hand lever and stem assembly are cycled multiple times to confirm smooth 90-degree travel, precise stop alignment, and stable operation before receiving its factory shipping tag.
