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Jiangsu aka Auto-Control Valve Co., Ltd. is set technology, research and development, design, production, sale, trade and services as one of the non-regional enterprise,
the company mainly produces GB, DIN, ANSI, API, BJ.JIS series valves.
Control Valve Series
Valve    Dimensions and Parameters
Cut-off valve   Dimensions and Parameters
Check Valve   Dimensions and Parameters
Ball    Dimensions and Parameters
Pneumatic angle seat valve series
Butterfly    Dimensions and Parameters
Hydraulic control valve series
Filter Series
Trap Series
Safety Valve Series
Diaphragm Valve Series
Other
 
Aka--News
According to the pressure regulating valve before selecting actuator spring range and supply pressure

Select the implementing agencies provided the main basis for the system of professional "maximum working pressure", the actuator output force must be greater than this pressure. On the "maximum working pressure", I say a few words more, for the period of insurance, the proposed maximum pressure valve before the pressure to choose as the largest source of gas pressure spring range is reasonable (when the valve is positive). Pressure valve when the valve is working properly before and after the calculated pressure as is often too small to allow pressure, probably due to the following:

1 at the time of the opening of the valve is not working properly may be small, so that the valve before the pressure greatly increased, and the maximum operating pressure differential value of meaning is likely to occur when the valve will be shut down, and in this case, outlet fluid transport equipment (such as pumps, fans, compressors) will reach maximum pressure equipment operation, its value is equal to the nominal outlet pressure of the fluid delivery device.

2 does not work when the pressure valve after the pressure vessel may be lower than the pressure vessel during normal working pressure. These two factors make the time during normal operation is not much larger than the pressure valve after pressure valve before the normal operation, such that during normal operation of the valve does not leak when the leak is not working properly. Industrial boiler feed water system, for example, 35t / h boiler feed pumps rated pressure is usually 6.0MPa, bubble pressure of 3.8MPa, the valve before the pressure is normal when 4.0MPa, the pressure valve when the valve is working properly before and after approximately 0.2 MPa, if you take this value as to allow pressure, almost any valve can meet the requirements. But with the sudden reduction of steam, the valve opening will also be reduced, the valve before the pressure increases until it reaches the feed pump rated pressure. At this point before and after the pressure valve for 2.2MPa, usually single-seat valve in this pressure is difficult to ensure no leakage.

 
 
Jiangsu aka Auto-Control Valve Co., Ltd. copyrighted All Tel: 400-1058266 Mobile: 13771005555 company mainly produces GB, DIN, ANSI, API, BJ.JIS series valves
Wuxi Sales Headquarters Phone: 0510-88559967 Fax: 0510-88559897 Mobile: 13861718882 Website: www.jsakfm.com mail: sales@jsakfm.com
Address: Dafeng City, Jiangsu Province Economic Development Zone