Depending on the requirements and standards, as well as long-distance requirements of ball valve, Ball Valve with the technical parameters of our design as follows:
Full welded Ball Valve
In order to prevent leakage of the valve to improve the deformation resistance of the valve, reduce the weight to be all-forged welded structure.
All forging welded structure, the use of forged body, after the assembly is welded to change the past casting, bolt connection structure, there will be no leakage of body parts; relative to casting point of view, the wall thickness can be forged thinning, and high strength, eliminating the need for dozens of bolts in the flange and the connection, less weight, according to the test, will reduce the weight of a quarter.
The seal structure
Sealing structure is the key to sealing valve designed to provide a good seal structure, directly affect the ball’s life, according to research, we offer meet the actual requirements of the following types of structure:
Double piston effect seat
Double piston effect of the basic principles of the valve seat has two seat seal, if the upstream seat is damaged, the media access to the cavity, and the pressure in the chamber downstream of the valve seat to seal still can.
So, which cavity pressure, media pressure forces the ball valve to the seat to achieve the purpose of sealing.
Dual seal
Ball Valve is the valve more effectively sealed, the structure of double seal structure, that is, Teflon soft seal. With metal seal, soft seal problems if the metal seal can also play a role.
Metal seal is also the design of structural fire protection, that is, when the fire was burning soft seal, metal seal to seal.
Emergency grease seal
If the foreign body or cause damage to the other sealing surface, the seat of the sealing resin injection system provides a quick and easy way to restore close off. Seal fat to seal filling. In addition, the filling system can also be used to periodically condition the valve seat sealing area. fmlsm1109
At the same time, also increased in the stem seal in additional emergency grease seal. Figure 3 (not yet, but welcome):
Anti-static, structural fire protection
Standard requires that the ball must have anti-static, structural fire protection, valve ball, stem and set the static electricity between the body structure, set the fire in the ring structure, when a fire occurs, the metal ring can still achieve the sealing, structure shown in Figure 1 (no, please provide):
Emergency cut off device
When the pipeline accident, requiring the implementation of the accident pipeline emergency shut off valve at both ends, usually within 15 seconds required to close the ends of the valve, or a shorter time, and now most of the selected valve manufacturer abroad gas-liquid interaction of the emergency shut off device, which directly use the media pipeline, the use of media pressure, the sensing device or the instructions from the main control room, induction accident signal, direct control valve, to achieve the purpose of emergency shut off valves.
Fixed Sphere
To reduce the media pressure on the ball and stem caused by the bending stress, the stem and ball design elements of the connection section of the structure, to avoid media pressure directly on the stem, resulting in the difficulty of the valve switch, the other to increase the support of the sphere cross-sectional area, improve the rigidity of the sphere.
To sum up, taking the characteristics of the several options that can meet the standard requirements of the ball valve, while also able to meet project needs.

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