Home > Product > Ball Valve > Ball Valve Components & Materials > Ball (Materials: SS, Brass, PTFE-Coated)
The ball inside a ball valve plays a crucial role in determining sealing efficiency, media compatibility, corrosion resistance, and operational durability. At Perfect Engineers, we manufacture and supply high-quality balls for our valves in SS304, SS316, Brass, and PTFE-coated variants, tailored to suit a wide range of fluid types, temperatures, and industrial environments.
Whether you’re dealing with corrosive chemicals, steam, water, compressed gases, or food-grade applications, choosing the right ball material ensures leak-free performance and a longer valve life.
The ball is the rotating, hollow sphere inside the valve body that controls flow by aligning or blocking the passage. When turned 90°, it either allows media to pass (open) or blocks it (closed). The material and surface finish of the ball directly affect:
| Material | Corrosion Resistance | Temperature Range | Ideal For |
| SS304 | Medium | Up to 400°C | General industry, water, steam |
| SS316 | High | Up to 400°C | Chemicals, acids, seawater |
| Brass | Low to Medium | Up to 120°C | HVAC, air, water, gas |
| PTFE-Coated | Very High | -20°C to 180°C | Chemicals, food, pharma, sticky media |
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| Application | Recommended Ball Material |
| Clean water & air | Brass or SS304 |
| Corrosive chemicals & acids | SS316 or PTFE-coated |
| Food, dairy, & beverage | SS316 or PTFE-coated (FDA grade) |
| Steam or high-temp media | SS316 or metal-seated SS ball |
| Sticky or slurry-like media | PTFE-coated (anti-stick) |
| Oil & gas systems | SS316 or metal-seated SS |
Not always. PTFE-coated balls offer better chemical resistance and are useful in low-torque, clean environments—but SS is stronger for high pressure.
Yes—all our SS balls in fire-safe valves comply with API 607 standards with metal or graphite seats.
Yes—but SS316 or electropolished SS316L is recommended for better hygiene and corrosion resistance.
Yes—we offer precision-lapped or electropolished SS balls for pharma and hygienic lines.
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