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Core structure characteristics of forged steel bellows stop valve

The inlet bellows valve refers to the bellows as the valve of the valve stem sealing component, mainly including the bellows stop valve and the bellows gate valve. Applicable to media that absolutely prohibits leakage, mainly used in toxic and flammable media and high vacuum applications.
Core structure characteristics of forged steel bellows stop valve
Forged steel bellows stop valve refers to the bellows of the forged steel valve body. Forged steel bellows stop valves are mainly used on the pipelines of various systems of thermal power stations, cutting or connecting the pipeline media. Applicable medium: non-corrosive medium such as water and steam. Compared with other valve products, the forged steel bellows stop valve is characterized by high temperature and high pressure, unique self-sealing design, the higher the pressure, the more reliable the seal. Due to the special technical characteristics and working conditions, the products also form features that cannot be replaced by other products.
Forged steel bellows shut-off valves are available in two bonnet designs. The first type is a bolt type valve cover. The valve body designed in this manner is connected to the valve cover by a bolt and nut, and the wound type gasket (made of 316 clip flexible graphite) is sealed. Metal rings can also be used when customers have special requirements. The second design form is a welded bonnet. The valve designed in this form has a valve body and a bonnet that are screwed and fully welded. Full penetration can also be used when the customer has special requirements.
First, [core components]
Characteristics of the bellows stop valve:
1. Double seal design (corrugated pipe + packing) If the bellows fails, the stem packing will also avoid leakage and meet the international sealing standard.
2, no fluid loss, reduce energy losses, improve plant equipment safety
3, long service life, reduce the number of maintenance, reduce operating costs
4, rugged bellows seal design, to ensure zero leakage of the valve stem, providing maintenance-free conditions
5. The gas medium valve seat adopts PTFE soft sealing material to improve the sealing of the valve.
6, high temperature ≤ 425 ° C valve seat with a tapered hard seal. Achieve airtight performance with zero leakage
Second, the use of structure
Self-centering pressure plate
Thread, socket or integral end of the welded body
Bolted, wrap-around gasketed bonnet and threaded, fully welded sealed bonnet
Integral upper seal seat
The socket is in accordance with ASME B16.11
Threaded end conforms to (NPT) ANSI/ASME B1.20.1
Bright rod bracket type (OS£Y)
Related pressure:
·800LB
Forged steel bellows stop valve 800Lb
Third, the characteristics of imported bellows valves:
The inlet bellows valve refers to the bellows as the valve of the valve stem sealing component, mainly including the bellows stop valve and the bellows gate valve. Applicable to media that absolutely prohibits leakage, mainly used in toxic and flammable media and high vacuum applications. The imported bellows valve has the following characteristics:
1. Rugged bellows seal design ensures zero leakage of the valve stem and provides maintenance-free conditions.
2, no fluid loss, reduce energy losses, improve plant equipment safety;
3, double seal design (corrugated pipe + packing) to avoid external leakage of the medium.
Fourth, the use of the wheel balance bracket features:
The grinding wheel balance bracket is an accessory that must be equipped for the grinding machine. It can be used to statically balance the grinding wheel to achieve the purpose of using the grinding wheel correctly. The leveling instrument can also detect the static balance of precision workpieces.
The grinding wheel balance bracket uses high-quality materials as the balance shaft. After heat treatment and precision machining and assembly, the precision is high and the performance is stable. It is an ideal machine tool accessory.
Generally, the grinding wheel with a diameter greater than 125 mm should be balanced so that the center of gravity of the grinding wheel coincides with its axis of rotation. Unbalanced grinding wheel will produce vibration when rotating at high speed, affecting the processing quality and machine tool precision. In severe cases, it will cause machine damage and grinding wheel fragmentation. The original difficulty caused by imbalance is mainly the uneven density of the grinding wheel parts and the geometrical asymmetry. And installation eccentricity. Therefore, the balance should be balanced before the grinding wheel is installed. The balance of the grinding wheel has two types: static balance and dynamic balance. In general, static balancing is only required, but in high-speed grinding (speeds greater than 50 m/s) and high-speed grinding, dynamic balancing must be performed. When balancing, install the grinding wheel on the balance mandrel, and then place the grinding wheel with the mandrel on the balance rail of the grinding wheel balance bracket. The grinding wheel will swing back and forth until the swing stops. The balanced grinding wheel can be stationary at any position. If the wheel is unbalanced, its heavier part always turns to the bottom. At this point, the position of the weight can be moved to balance.

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