On Grundfos hydraulic metering pump models DMH sold with AC motors they are known as DMH. that provide a flow rate from 1.45 to 3000 liters per hour at the pump outlet. The pressure in these models ranges between 4 and 200 bar. The shell material of DMH series is aluminum and its head material is produced with different materials such as PVC, steel and PLASTIC .
In these pumps the stroke or opening and closing of the diaphragms can be controlled analogically and by manual volume. Additionally, hydraulic pumps have a pressure relief screw or relay valve, which releases additional pressure if the pressure increases beyond the allowable limit so as not to damage the diaphragms. You can see the technical information of this pump below.
GRUNDFOS DMH series injection pump
| flow rate | ۱,۴۵ to 3000 (liters per hour) |
|---|---|
| The amount of pressure | ۴ to 200 (times) |
| Specific Gravity of Fluid | kg/m3 998.2 |
| Fluid temperature range | -۱۰ to 90 (degrees Celsius) |
| fluid concentration (viscosity) | ۵ (millipascals) |
| Engine power | ۰,۶ to 2 (kW) |
| protection class | IP65, ATEX certification |
| Pump head material | Plastic, PVC, steel |
| Diaphragm type | PTFE |
| Housing material | Aluminum, cast iron |
| Sex without even | Steel, Ceramic, Al2O3, Glass SiLibeads Type P |
| The material of the valve seat. | Composite, Steel, PTFE, Plastic |
| Valve seal material | FKM, rubber |
| Flow tolerance | ±۱.۵% |