Its unique sealing system is another feature of Ballostar® KHI. The test and drain valve welded to the ball valve housing allows the pressure to be relieved intermediately while the ball is closed. The key benefit of this feature is that Ballostar® KHI can be leak-tested at any time without having to open the pipeline. These ball valves are fit for many different applications such as underground district heating trenches, buried pipelines, co-generation power stations, pump stations, steelworks, hydroelectric power stations and tunnel boring machines.
Product Advantages | KHI Ball Valves
- Maintenance-free
- Supports pressurisation on either side
- Trunnion-mounted ball with cylindrical full-passage duct
- Bidirectional sealing to EN 12266 – leakage rate A
- Sealing elements protected against surge pressure
- Double block and bleed with intermediate venting (TÜV-certified)
- Highly resistant to piping forces
- Tested and certified to EN 488: 2015 (VVS)
- Subsequent automation possible at any time (top flange to EN ISO 5211)
