Ball valve

Ball valve is evolve by faucet a powerful person and come. It has identical whirl 90 degrees mention an action, different is faucet body it is sphere, circular via or passageway pass its axes. Spherical the scale with passageway mouth should be such, rotate when the ball namely 90 degrees when, in into, exit should appear entirely spherical, block flow thereby.

Ball valve needs to use only rotate 90 degrees operation and very small rotational moment of force can shut rigor. Lumen of completely equal body of a powerful person provided the flow path with very small, direct obstruction for medium. Think ball valve is optimum normally do directly shut use, but latter development already designed ball valve those who make it has reduce expenditure and control flow to use. The main characteristic of ball valve is itself structure compact, be operated easily and maintain, apply to the general job medium such as water, dissolvent, acid and natural gas, and still apply to the medium with working abominable requirement, like oxygen, cross oxidation hydrogen, firedamp and ethylene to wait. Body of ball valve a powerful person can be whole, also can be knockdown.

By prevent medium to flow backwards choose valve

The action of the valve of this kind of type is to allow medium to flow to a direction only, and stop directional flow. Normally this kind of valve is automatic job, below the fluid pressure action that flows in a direction, valve of a powerful person is opened; When the fluid turns over direction to flow, mix by fluid pressure of valve of a powerful person from action of valve of coincide a powerful person at valve base, cut off flow thereby. Its break down answers a powerful person to belong to the valve of this kind of type, it includes to come back the check valve that open type and litre fall type check valve. Come back the check valve that open type has orgnaization of one interpose hinge, the valve of a powerful person like still one resembles the door leans freely in declining valve base apparently. To ensure valve of a powerful person can reach the proper place of valve base face every time, design of piece of a powerful person is in hinge orgnaization, so that valve of a powerful person is had enough have come back open a space, make valve of a powerful person true, comprehensive contact with valve base. Valve of a powerful person can be made with the metal entirely, also can enchase leather, balata on the metal, perhaps use synthesis to cover a range, this depends on the requirement of performance characteristics. Come back the check valve that open type falls in the state that opens completely, fluid pressure gets set back scarcely, because this passes the pressure of valve,fall relatively lesser. Litre fall the valve of a powerful person of type check valve reposes be located in on body of a powerful person on valve base sealing surface. This valve can rise freely besides valve of a powerful person fall besides, others as shut-off valve same, fluid pressure makes valve of a powerful person is raised from valve base sealing surface, medium circumfluence brings about fall after a rise of valve of a powerful person to arrive on valve base, cut off flow. According to use condition, valve of a powerful person can be complete metal structure, also can be in a powerful person the form that rubber mat or balata hoop set on valve wearing. Like shut-off valve, the fluid falls through rising the passageway of type check valve also is stricture, because this falls through rising,the pressure of type check valve falls to open a little bit type check valve is big than coming back, and come back the limitation that the discharge of the check valve that open type gets is very few.
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