The pressure injection pump Type DP 40 PU is a pneumatically driven, single acting piston pump that op- erates after the pressure intensification principle. The area ratio of drive pressure to pressure  piston  ring  area  yields the pressure ratio which is 41:1 in type DP 40 PU pumps.

The pump consists of a pneumatically actuated drive part and a high-pressure part. Drive part and high-pressure part are linked with a piston rod. Two parallel high-pressure pistons are arranged at the end of the piston rod and are connected via a yoke. Thus, the drive and high-pressure parts are isolated and it is prevented that pump medium gets into the pneumatic drive part in case of leakages in the high-pressure sealing. The piston rods are of high-tensile stainless steel and boast long service lives. The valve seats are of tempered steel and the sealings of wear resistant UHMW-PE.

Application: The DP 40 PU pump is a robust constructed Injection pump for high flow rates and pressures, which is generally used as pipeline-pump.

The pump can handle most materials on a polyurethane base with a mix ration of 1:1.