|
|
|
China Shanghai Qiuyi Valve Co.,Ltd
|
|
| |
 Click to enlarge image
|
|
|
globe valve is the hoist of the Cypriot-valve, sealing面呈plane or cone, fluid valve along the center line for linear motion. Stem forms of exercise, a leveraged take-off and landing (stem movements, hand movements do not round), have leveraged rotation movements (hand wheel together with the stem rotating movements in the nut on the valve body). The deadline for valve applies only to full and entire customs do not allow for the regulation and cutting expenditure.
The deadline for a mandatory valve closed the valve, so in the valve closed, the need to exert pressure on the valve to leak is not mandatory sealing surface. When the media from entering valve valve below 6:00, operation of the need to overcome the resistance, is the stem and fill the friction and pressure from the media generated by the thrust, the Commissioner of the valve than the opening of the valves, Therefore, to stem the diameter, otherwise they will be in the top bend the stem fault. In recent years, since there Sealing the valve, close the valve on the flow of medium to the top of the valve into the valve chamber, then the media pressure, the Commissioner of the valves of the small, open the valve of the force, Stem diameter can be reduced accordingly. At the same time, in the medium, this form of valve is more rigorous. China's valve "three of the" once, closing the valve flows, should be used from top to bottom.
|
|
| |
|
|
|
Bookmark / Share this page