What kind of pump is this?
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I’ve never seen it before; I’m not familiar with it. I hope the seniors can give me some guidance! The nameplate can’t be seen clearly!
Plunger or diaphragm metering pump~~
Milton Roy PRIMEROYAL series hydraulic diaphragm metering pumps, with engineering plastic pump heads; dual diaphragms and a pressure gauge for alarm functions. The top component is likely the Bernard electric stroke controller, which automatically adjusts the stroke length to control flow rate.
Milton Roy hydraulic double-diaphragm metering pump, with stroke adjustment – an elite configuration, really something for the wealthy :)