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Three-piece ball valve

Three-piece ball valve works as follows:


The advantage of the Forged Steel Valves


Forged Steel Valves for truncated or connected line media, use different materials, can be applicable to water, steam, oil products, nitric acid, acetic acid, oxidizing medium, urea and other media. Forged Steel Valves fully open position, in line with gate position (ie, travel> OK. Casting pig iron in the cupola melting cast iron (liquid), and cast into the liquid cast iron casting, this cast iron is called cast iron Valve closed, sealing surface can only rely on media pressure to seal the enrichment equipment that rely on media pressure on the sealing surface of the ram pressure to the other side of the seat to ensure that the advantages of the sealing surface of the seal Forged Steel Valves.



Various types of valve selection guide PART 2

Selected by the backflow valve to prevent MEDIA

This type of valve's role is only allowed to medium flows in one direction, the direction and stop the flow. This valve is normally automatic work, in a direction of flow of fluid under pressure, open the flap valve; When the opposite direction of fluid flow from the fluid pressure valve and the valve since coincidence role in the valve seat, thereby cutting off flow. One Check valve part of this type of valve, which includes a check valve and rotary movements Kai-check valve. Kai Xuan-check valve with the humble hinge institutions, there is a door the same as freely takes valve tilted on the surface of the valve seat. In order to ensure that each valve flap valve seat surface can reach the appropriate location, in valve design hinge agencies, in order to have enough valve Kai Xuan space, and the valve genuine and comprehensive engagement with the valve seat. All valve can be made of metal, can be embedded in the metal, leather, rubber, or to use synthetic coverage, depending on the use of performance requirements. Kai Xuan-check valve in the fully open state, almost unimpeded fluid pressure, the pressure drop through the valve relatively small. The movements of check valve located at Valve valve seal on the valve seat surface. Apart from this valve can be freely valveWater Control Valve movements, like the rest of the cut-off valve, the pressure of fluid from the valve seat valve seal surface lift, medium return led to the valve seat valve down, and cut off the flow. Under conditions of use, the valve can be all-metal structure, and can also be embedded in the rubber valve pad shelves or in the form of rubber ring. Like closing valves, fluid movements of check valve through the channel is narrow and therefore the lifting of check valve through the pressure drop Kai Xuan than some big-check valve, and the Rotary Kai-flow check valves are very few restrictions.

Various types of valve selection guide PART 1


Valve as a deadline for media use, in Full, the whole flow through, the media operation at this time minimum pressure loss. Valve usually do not apply to the regular gate, and maintain ram Full or total closure of the condition. As regulation does not apply to the use or expenditure. For high-speed mobile medium, open gate in the local conditions can cause the gate vibration, and vibration which may damage the gate and the sealing surface of the valve seat, while expenditure will ram the erosion of media. The structural form, the main difference is that the sealing components used in the form. According to seal components in the form of the valve are often divided into several different types, such as: wedge-type valve, the parallel-valve, twin parallel plate valve, the wedge-ram plate gate, and so on. The most commonly used form of wedge-type valve and parallel-valve.




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