cryogenic ball

cryogenic ball is a device that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways. Valves are technically valves fittings, but are usually discussed as a separate category. In an open valve, fluid flows in a direction from higher pressure to lower pressure. The simplest, and very ancient, valve is simply a freely hinged flap which drops to obstruct fluid (gas or liquid) flow in one direction, but is pushed open by flow in the opposite direction. This is called a check valve, as it prevents or "checks" the flow in one direction.

Company Name  CNOOC Limited  Department  CNOOC Limited  A person in charge  Li Yong  Telephone  (852) 3313 2511  Facsimile    E-mail  yli13363@gmail.com  Address  HK A pleasant day to you , I am Li Yong, Executive Director and the Vice Chairman Board of Directors of the China National Offshore Oil Corporation (CNOOC). I wish to meet a business or project developer to discuss investment terms. Do let me know of possible opportunities in your company. I look forward to your response here or on my official email address as follows(liyong@group-cnooc.com)  Regards, Li Yong  Vice Chairman of the Board. CNOOC Limited