Silicon nitride ball valves are available in different materials and structural forms for different working conditions, with electric, pneumatic or manual actuation. They eliminate the leakage, high torque and seal-face corrosion of metal hard-sealed ball valves, while offering excellent wear resistance and very high reliability. Service life is 2 to 4 times that of titanium alloy or Monel valves. Factory-direct supply.
Key features
- Erosion- and corrosion-resistant, high and low temperature capable
- Self-lubricating with excellent sealing
- Service life 2–4× titanium / Monel valves
- Electric, pneumatic or manual actuation
Applications
Chemical processing and abrasive, corrosive media.
Typical material properties
| Property | Value |
|---|---|
| Bulk density | 3.2 ± 0.05 g/cm³ |
| Rockwell hardness (HRA) | 87 – 94 |
| Flexural strength | ≥ 500 MPa |
| Compressive strength | ≥ 1500 MPa |
| Fracture toughness | ≥ 6.0 MPa·m¹ᐟ² |
| Dielectric strength | ≥ 12 kV |
| Thermal expansion (RT – 500 °C) | 2.0 – 3.7 ×10⁻⁶/°C |
| Elastic modulus | 40 – 310 GPa |
Precision capabilities
| Item | Capability |
|---|---|
| Dimensional accuracy | up to 0.001 mm |
| Surface finish | up to mirror |
| Concentricity | up to 0.003 mm |
| Parallelism | up to 0.002 mm |
| Bore tolerance | from 0.005 mm |
| Straight slot | narrowest 0.1 × 100 mm |
| Thickness | down to 0.08 mm |
| Threads | internal from M2, external unrestricted |
| Cylindricity | up to 0.004 mm |
| Linear tolerance | up to 0.001 mm |
| Minimum bore | 0.07 mm |
Typical values — contact us for the latest certificate of analysis.