Multistage pump for pumping a liquid containing gas in the form of undissolved solid particles and / or chemically active agents, mainly in the oil industry. The pump includes impellers with vanes made separate from the sleeves and connected thereto with possibility of setting the blades at different angles relative to the ends of their sleeves. A distinctive feature of the proposed pump is to fulfill the impellers. In the first the entrance of the pump impeller blade installation angle is made larger than in the subsequent impellers.
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