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Grundfos DMH 2.2-25 Stainless Steel Dosing Pump 2.2 L/h 25 Bar
Grundfos DMH 2.2-25 Stainless Steel Dosing Pump 2.2 L/h 25 Bar
Vendor: Grundfos
Unavailable
KEY FEATURES
- Approx. 2.2 L/h nominal dosing capacity at 50 Hz
- 25 bar maximum operating pressure
- Robust positive displacement diaphragm dosing pump
- Stainless steel EN 1.4571 dosing head
- Stainless steel EN 1.4401 valve ball
- PTFE/composite valve seat and gasket components
- Long-life PTFE diaphragm
- Handles liquids up to 300 mPa·s viscosity
- Manual stroke-length adjustment with 10:1 adjustment ratio
- 3 × 230/400 V, 50 Hz three-phase motor
- Prepared for VFD operation with maximum frequency up to 100 Hz
- Diaphragm leakage detection
- IP65 enclosure rating
- 1/4-inch Rp inlet and outlet connections
- CE, EAC and CNROHSEX approvals
The Grundfos DMH 2.2-25 is a versatile positive displacement diaphragm dosing pump designed for reliable chemical dosing in demanding industrial and process applications. The DMH range is engineered for robust operation where accurate low-flow dosing at high operating pressures is required.
The diaphragm is hydraulically coupled through a precise gear-eccenter-tappet system to a high-efficiency AC motor. Dosing capacity can be adjusted by varying the stroke length using the stroke adjustment knob, providing an adjustment ratio of 1:10.
This configuration features a stainless steel EN 1.4571 dosing head, stainless steel EN 1.4401 valve ball, PTFE/composite valve seat and gasket components, and a long-life PTFE diaphragm. With a nominal dosing capacity of 2.2 L/h, maximum operating pressure of 25 bar and compatibility with liquids up to 300 mPa·s viscosity, the pump provides robust performance for demanding high-pressure chemical dosing applications.
ADDITIONAL FEATURES
- Long-life PTFE diaphragm
- Easy-to-install and operate design
- Aluminium pump housing
- Optimum capacity and stroke-frequency graduation
- Dosing flow variation ±1.5% (FS)
- Linearity ±2% (FS)
- Standard inlet and outlet non-return valves
- 1/4-inch Rp inlet and outlet connections
- Maximum permissible inlet pressure of 8 bar
- Liquid temperature range from -10 to 90 °C
- Standard control variant
- Prepared for VFD operation
- Maximum frequency of 100 Hz
- Diaphragm leakage detection
- IP65 motor enclosure
APPLICATIONS
- Process engineering, water treatment, wastewater treatment, industrial chemical dosing, chemical treatment, disinfection, pH adjustment and other applications requiring reliable low-flow chemical metering at pressures up to 25 bar.
PRODUCT PACKAGE INCLUDES
- Grundfos DMH 2.2-25 Stainless Steel Mechanical Dosing Pump
SPECIFICATIONS
| Specification | Details |
|---|---|
| Product Name | Grundfos DMH 2.2-25 |
| Product Number | 99821647 |
| Model / Configuration | DMH 2.2-25 B-SSL/T/SS-X-E1AAXE0AG |
| EAN Number | 5713834767746 |
| Pump Type | Positive displacement diaphragm dosing pump |
| Nominal Flow Rate | 2.2 L/h at 50 Hz (approx. 0.58 US GPH) |
| Maximum Operating Pressure | 25 bar (approx. 362.6 psi) |
| Number of Dosing Heads | 1 |
| Maximum Viscosity | 300 mPa·s |
| Pump Housing | Aluminium |
| Dosing Head Material | Stainless steel EN 1.4571 |
| Diaphragm | PTFE |
| Valve Ball Material | Stainless steel EN 1.4401 |
| Valve Seat Material | PTFE / Composite |
| Valve Gasket Material | PTFE / Composite |
| Inlet Non-Return Valve | Standard |
| Outlet Non-Return Valve | Standard |
| Inlet Connection | Rp |
| Outlet Connection | Rp |
| Inlet Connection Size | 1/4 inch |
| Outlet Connection Size | 1/4 inch |
| Maximum Permissible Inlet Pressure | 8 bar (approx. 116 psi) |
| Liquid Temperature Range | -10 to 90 °C |
| Power Input (P1) | 0.2 kW (approx. 0.268 HP) |
| Rated Voltage | 3 × 230/400 V |
| Mains Frequency | 50 Hz |
| Maximum Frequency | 100 Hz |
| Enclosure Class | IP65 |
| Control Variant | Standard |
| Frequency Converter | Prepared for VFD |
| Cable Included | No |
| Power Plug | No plug |
| Diaphragm Leakage Detection | Yes |
| Net Weight | 14 kg (approx. 30.9 lb) |
| Gross Weight | 25.3 kg (approx. 55.8 lb) |
| Shipping Volume | 0.156 m³ |
| Approvals | CE, EAC, CNROHSEX |
ADDITIONAL RESOURCES
PRODUCT BROCURE
Additional information about Grundfos DMH Mechanical Dosing Pumps are available in the DMH product leaflet.
DATASHEET
Detailed specifications for the Grundfos DMH 18-16 Mechanical Dosing Pump 18 L/h 16 Bar are available in the datasheet below.
Additional technical data about the Grundfos DMH Mechanical Dosing Pumps are available in the product datasheet.
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