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Priming arrangements

Liquid ring air primer pump- it consists of a bladed circular rotor shrouded on the under side, which rotates in an oval casing, which has a supply of sealing water, water is thrown outside by the impeller which whirls
around in the casing,  the water seals and also recedes and approach rotor boss twice in each revolutions, which gives an effect of producing rotating water pistons between the blades.
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