1, the piping systems and devices require cryogenic medium, the best selection of plus bonnet cryogenic needle valve.
2, the pipeline system FCCU refining device, you can use the lift needle valve.
3, apparatus and piping systems of chemical systems and other corrosive acid medium, the best selection of austenitic stainless steel valve seat ring of stainless steel needle valve.
4, during the time flow regulation, to use traditional worm, pneumatic or electric with a V-shaped opening regulating needle valve.
5, city gas pipeline and natural gas, use thread connecting flange connections and needle valve.
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