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.
Technical Data: | ||||
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 | |||
Dimensions | Height | 490 mm | ||
Width | 470 mm | |||
Length | 940 mm |