Tungsten Carbide Valve Balls & Seats
No.1 worldwide in capacity, quality and margin — API 11AX valve balls up to Ø107.95 mm
Tungspire is the industry-leading manufacturer of tungsten carbide valve balls and valve seats for sucker rod pumps and high-pressure service. Valve balls are offered in 12 carbide grades up to Ø107.95 mm, seats in 7 grades. Every ball is 100% vacuum-tight (zero porosity), fully interchangeable within the same model, and manufactured per API SPEC 11AX with world-leading sphericity.
API SPEC 11AXAPI SPEC 6AOEM per drawing
Key features
- World-leading ball sphericity for metal-to-metal sealing and longer pump run life
- 100% vacuum-tight sintered blanks — zero internal porosity, no leakage paths
- Full interchangeability within the same model for field maintenance
- 12 ball grades / 7 seat grades matched to sand, H₂S, CO₂ and corrosive well fluids
- OEM pairs (ball + seat) lapped together for optimal sealing bands
Representative grades
| Grade | WC | Binder | Hardness | TRS (N/mm²) | Density (g/cm³) | Typical application |
|---|---|---|---|---|---|---|
| YG6 | 94% | Co 6% | HRA 89.5 | ≥ 2150 | 14.95 | Standard rod pump balls & seats, mild abrasion |
| YG8 | 92% | Co 8% | HRA 89.0 | ≥ 2300 | 14.70 | Sandy wells, general sucker rod pump service |
| YG11 | 89% | Co 11% | HRA 87.5 | ≥ 2600 | 14.40 | High-impact pump valves, deviated wells |
| YG15 | 85% | Co 15% | HRA 86.5 | ≥ 2800 | 13.95 | Severe impact, large-diameter balls |
| YN6 | 94% | Ni 6% | HRA 89.0 | ≥ 1950 | 14.85 | Corrosive wells (CO₂ / H₂S), non-magnetic option |
| YN8 | 92% | Ni 8% | HRA 88.5 | ≥ 2100 | 14.60 | Corrosion + abrasion combined service |
Representative grades shown. Full grade portfolio and custom formulations available on request.
Typical applications
Sucker rod pump traveling & standing valvesHigh-pressure wellhead valvesChemical metering pumpsSeawater injection pumps