A2VK28 hydraulic pump is magnetic coupling and mixing head of high pressure polyrethane foam metering piston pump.Besides the A2VK28,there is A2VK12,A2VK55 and A2VK107.A2VK28 hydraulic pump has the high metering accuracy and reproducibility of the variable pumped volumes.A2VK28 hydraulic pump robust manual adjustment via handwheel with integral precision measuring scale.The operating pressure of A2VK28 hydraulic pump is up to 250 bar.