PIB102A 3BEB0180

Description

PIB102A 3BEB0180

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Some valves of PIB102A 3BEB0180 are limited by their own structure and have poor stability when working at certain opening degrees.

① Double seat valve with an opening of less than 10%, causing instability issues due to flow opening at the upper ball and flow closing at the lower ball;

② The stability is poor in the vicinity where the slope of the unbalanced force changes alternately. Like butterfly valves, the alternating point is around 70 degrees; The double seat valve has an opening of 80-90%. When encountering such valves, working in unstable areas will inevitably result in poor stability. Avoiding working in unstable areas is sufficient.

Valves with good stability have less variation in unbalanced force and good guidance. In the commonly used PIB102A 3BEB0180, the sleeve valve has this major feature. When the stability of single or double seat valves is poor, replacing them with sleeve valves will definitely improve their stability.

The ability of PIB102A 3BEB0180 to resist the impact of load changes on stroke depends on the spring stiffness. The greater the stiffness, the smaller the impact on stroke, and the better the valve stability. Increasing the spring stiffness is a common and simple method to improve valve stability, such as changing the spring range from 20-100KPa to a high stiffness spring range of 60-180KPa. This method is mainly used for valves with locators, otherwise the valve used will need to be equipped with a locator separately.

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