2, the pipeline system on the refining unit FCCU, the choice of the lift rod needle valve.

3, the chemical system, chemical and other corrosive media devices and piping system, should use of austenitic stainless steel, PTFE seat ring stainless steel needle valve.

4, metallurgical, power systems, petrochemical equipment, piping systems or devices on the high-temperature media in the urban heating system, the choice of metal to metal sealing needle valve.

5.Need for flow control, the choice of the worm gear, pneumatic or electric with V-shaped openings adjust the needle valve. , Oil and gas transmission mains, you need to clean up the pipeline, and be buried in the ground, the choice of the needle valve of the full bore, all-welded structure; laid on the floor, full bore welded connection or flange connection ball valves.

6, refined oil pipelines and storage equipment, the choice of the needle valve flange connection.

7, town gas and natural gas pipeline, use the needle valve flange connections and threaded connection.

8, metallurgical oxygen in the piping system, should be selected to undergo a rigorous degreasing treatment, needle valve flange connection.

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