Description
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.
