PIB1201A 3BEC0067

Description

PIB1201A 3BEC0067

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PIB1201A 3BEC0067 flat valve core (such as the valve plug of two position valves and sleeve valves) has no guiding or guiding surface inside the valve seat. Due to the lateral force exerted on the valve core during operation, it moves from the inflow side to the outflow side. The larger the clearance between the valve cores, the more severe this unilateral phenomenon becomes. In addition, deformation, non concentricity, or small chamfer of the valve core sealing surface (usually 30 ° chamfer for guidance) may cause the chamfered end face of the valve core sealing surface to be placed on the valve seat sealing surface when approaching closure, resulting in valve core jumping or even not closing properly, greatly increasing the valve leakage. The simplest and most effective solution is to increase the size of the valve core sealing surface, so that the minimum diameter of the valve core end face is 1-5mm smaller than the valve seat diameter, with sufficient guiding effect to ensure that the valve core is guided into the valve seat and maintain good sealing surface contact.

Two position valves are usually used as flow closed valves to improve the cutting effect. PIB1201A 3BEC0067 is used for liquid media. Due to the unbalanced force of the flow closure type, the valve core is pressed and closed, which has a closing effect, also known as a suction effect, accelerating the valve core action speed and generating slight water hammer, causing system surge. The solution to the above phenomenon is to simply change the flow direction to open flow, and the surge can be eliminated. Similar to the problem where the valve cannot function properly due to closing, this method can also be considered to solve it.

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