14 needle valve

Radically changed the metal hard seal ball valve is easy to leak, torque and the corrosion resistance of the sealing surface faults ceramic good abrasion resistance

Radically changed the metal hard seal ball valve is easy to leak, torque and the corrosion resistance of the sealing surface faults ceramic good abrasion resistance, let this valve durability, reliability is extremely high. The service life is ball valve manufacturer long, is the titanium alloy valve and monel valve 2 to 4 times. Used for high hardness particle medium, or soft particles but there is another corrosion medium, this valve has the incomparable absolute advantage, is currently the only suitable valves such media.
Spherical and opening ratio should be such, that is when the ball rotate 90 degrees, in the inlet and outlet should be completely present spherical, thereby blocking flow. Ball valve just has to rotate 90 degrees operation and small rotational torque can be closed tight. Full equality of the valve body cavity for medium resistance is very small, straight flow channel. Usually do think the ball valve is suitable for direct use open and close, but recent development has put a ball valve designed to make it with throttling and control flow. Ball valve itself is 14 needle valve the main characteristics of compact structure, easy operation and maintenance, and is applicable to water, solvent, acid and gas, such as general work medium, but also is suitable for the working conditions of media, such as oxygen, hydrogen peroxide, methane and ethylene. Ball valve body can be a whole, also can be combined.
Ball valve working principle and practical effect of the working principle of ball valve is love by rotary valve to keep the valve open or closed. Ball valve switch lightweight, small size, can make it big caliber, reliable sealing, simple structure, convenient maintenance, sealing surface and the spherical often in the closed state, not easily be medium erosion, has been widely used in various industries.
Needle valve: the valve is a throttling valve, adjusting precision is higher. Valve needle, along the flow direction of movement, change the flow area, to truncate or flow adjusting valve. Needle valve is a kind of fine-tuning valve, the valve plug for needle, mainly used for adjusting the gas flow. Fine-tuning require valves open mouth increases gradually, from closed to open for finely adjusted. Needle valve plug after quenching is commonly used in steel needle, and the seat is made of tin, copper and other soft materials. Asked needle valve and valve seat sealing work closely rely on the cone. Needle valve with the taper 1:50 and cone Angle of 60, cone surface after fine grinding. The valve stem and valve 38 needle valve seat asked seal are realized by bellows.
The difference between the ball valve and needle valve, needle valve can adjust flow, the size of the ball valve can not adjust flow; Needle valve fully open need to turn the screws round and round the handle, and only turn 90 ° to ball valve. On the shape difference is more apparent, needle valve handwheel, ball valve has a hand. In liquid, air pressure control for flow adjusting the needle valve in the pipeline, if quick truncation flow ball valve.


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