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.
|Air drive pressure||1-6 bar / 14,5-87psi||Connections|
|Max. operating pressure at 5 bar inlet pressure||205 bar / 2973psi||Air connection||RD 32 x 1/8“|
|Pressure ratio||41:1||Suction connection||RD 32 x 1/8“|
|Stroke volume per double stroke||49cm³ / 2,99inch³||Pressure outlet||Steck-O DN 10|
|Max. operating temperature||60°C||Weight||ca. 120 kg|
|Liquids||Polyurethan Silicate resin|
|Max. flow rate||ca. 25 l/min on free outlet|
|For information of flow rates at the different pressure stages please refer to the performance graph.|
|Air piston diameter||300 mm|
|High-pressure piston diameter||33 mm|