FIELD: manufacture of pumps for transfer of suspensions. SUBSTANCE: two-cylinder pump has selector valve 5 in the form of rotary connection branch pipe 6, 6' with inlet hole RE that constantly communicates with suction pipe-line 3 and with outlet hole RA which displaces with turn of connection branch pipe between holes of supply cylinders. Connection branch pipe is located in body 8, 8' which has at least four holes a-d and internal free space H constantly under suspension discharge pressure. Pump is fitted with one shut-off member as minimum to shut-off suction pipe-line 3 and/or second hole a, b of body 8, 8' of connection branch pipe. EFFECT: making suspension transfer process uninterrupted. 14 cl
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