high pressure ball valve V.S low pressure ball valves
High-Pressure: ≥ PN100 (Class 600)
Low-Pressure: ≤ PN40 (Class 300)
| Parameter | High-Pressure Ball Valves | Low-Pressure Ball Valves |
|---|---|---|
| Design | 1. Body Material: Forged steel (ASTM A105/A182 F316) 2. Sealing: Metal seats + spring-loaded mechanisms 3. Support: Trunnion-mounted design 4. Connection: Fully welded / Flanged (RF/RJ) |
1. Body Material: Cast steel (WCB/CF8) 2. Sealing: Soft seats (PTFE/PEEK) 3. Support: Floating ball 4. Connection: Flanged (RF) / Threaded |
| Performance | - Pressure: Class 600~2500 - Temp: -196°C~+550°C - Leakage: ≤ ISO 5208 Rate A (Zero Leakage) - Fire Safe: API 607/6FA certified |
- Pressure: Class 150~300 - Temp: -29°C~+200°C - Leakage: ISO 5208 Rate D - No fire-safe requirement |
| Applications | - Oil/gas transmission pipelines (≥Class 600) - Hydrocracking units - Supercritical steam systems - HP water/gas injection wells |
- Water treatment / HVAC - Low-pressure gas distribution - Chemical processes - General industrial flow control |
| Cost & Maintenance | - Higher cost (forging + complex design) - Extended service life (30+ years) - Specialized maintenance required |
- Lower cost (casting + simplified design) - Easy maintenance (in-line repairable) - Standardized spare parts |
high pressure and low pressure ball valves factory
