1. Extreme working conditions
High temperature and pressure environment
Suitable for piping systems with temperature ≥300℃ or pressure ≥PN40 (Class 300), such as main steam piping of power station boilers (typical parameters: 6.3MPa/540℃);
adopts Double or triple eccentric metal sealing structure, can withstand the impact of thermal expansion of the medium and maintain long-term sealing.
Corrosive media
When dealing with strong acid, alkali or organic solvents, use PTFE/PFA butterfly valve or nickel-based alloy valve body, such as chlor-alkali industry, hydrochloric acid pipeline (concentration of 36%);
seawater and other high salt spray environment recommended to use Super duplex stainless steel material to extend the corrosion life.
2. Special process requirements
Severe sealing requirements
Need to achieve two-way zero leakage (leakage class VI) occasions, such as natural gas pipeline or chemical reactor feeding system;
multi-layer metal hard seal or elastic alloy seal ring The use of multi-layer metal hard seals or elastomeric alloy sealing rings to cope with pressure fluctuations and vibration.
Solid-containing media handling
Slurry, slurry and other media containing solid particles (solids content ≤ 40%) recommended metal hard seal butterfly valve, the sealing surface wear resistance is better than the soft seal structure;
a mineral processing plant in the tailings pipeline after the application of the valve clogging rate decreased by 80%.
3. The system characteristics of matching
large pipe diameter and low flow resistance
In DN1200 or more pipelines to replace the gate valve, the weight is reduced by more than 50%, the installation and maintenance costs are significantly reduced;
optimised flow path design so that the pressure drop is only 1/3 of the same diameter globe valves, suitable for long-distance fluid transport systems.
Fast response control
Pneumatic drive type can achieve 90 ° rotation in just 8 seconds, suitable for steel mills, gas recovery systems and other scenes that require frequent switching;
integrated intelligent positioner to support the 4-20mA precision adjustment, flow control accuracy of ± 1%.
