Kuban State Technological University, Krasnodar, Russia

E. Yu. O. Balaev, Senior Researcher, Department of Oil and Gas Engineering named after Professor G. T. Vartumyan, e-mail: balaev1122@mail.ru
M. A. Samarin, Engineer, Department of Oil and Gas Engineering named after Professor G. T. Vartumyan, e-mail: samarin1901@yandex.ru
N. A. Shostak, Candidate of Technical Sciences, Associate Professor, Deputy Director of the Higher Engineering School “Oil, Gas and Energy Engineering”, e-mail: nikeith@mail.ru

A notable issue with current ball valve designs pertains to the configuration of the split point within the body. This prefabricated body design facilitates the installation of operating elements within the body. The article presents a design for a ball valve that utilises a one-piece body, with the internal working parts of the valve being made from an alloy that undergoes thermoelastic martensitic transformations, which exhibits the shape memory effect during phase transition. The installation of the operational components within the ball valve body is enabled by the shape memory effect of the alloy from which they are fabricated. The present study investigates the cavitation resistance of an alloy that undergoes a thermoelastic martensitic transformation, using titanium nickelide (Ni55.9Ti44.1) as a model system. This investigation compares the alloy’s behaviour with that of stainless steels of AISI304 and AISI430 grades. The proposed design solution, which involves the fabrication of a one-piece body for the ball valve and the utilisation of alloys with thermoelastic martensitic transformations for the manufacture of the ball valve’s operating components, is expected to enhance reliability and performance characteristics, as well as the service life of the product in its entirety.

The research is carried out with the financial support of the Kuban Science Foundation in the framework of the scientific and innovation project Num. NIP-20.1/20.

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