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The pump of the DMH series is a versatile positive displacement diaphragm dosing pump.
The diaphragm is coupled hydraulically via a precise gear-eccenter-tapet-system to a high efficiency AC motor. The dosing capacity is adjusted by varying the stroke length at the stroke adjustment knob in the ratio 1 to 10.
The range is highly versatile, it covers a wide flow range and offers a variety of dosing head sizes, materials and accessories. Customers worldwide have enjoyed years of trouble-free operation from their DMH pumps.
The Grundfos DMH range is a series of extremely strong, robust pumps for applications requiring reliable dosing capability, such as process engineering.
The liquid end is composed of:
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Other features:
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Applies only to pumps with: ATEX certification
The dosing pump DMH 25x is certified according to the ATEX guideline RL 94/9/EC for non-electrical operating supplies. The motor versions EEx e and EEx de defined by Grundfos are certified by the manufacturers according to ATEX guidelines for electrical operating supplies. The motor type plate is labelled according to ATEX. The ATEX approved DMH pumps are available in a variety of configurations - some can be used for dosing combustible liquids.
Electronics features:
Applies only to pumps with control variant: AR
Etron Profi microprocessor electronics, direct attached to motor:
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Applies only to pumps with control variant: D3; D6
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| Controls: | ||
| Type of connector: | No plug | |
| Type of control variant: | Standard | |
| Frequency converter: | Not prepared for VFD | |
| Liquid: | ||
| Pumped liquid: | Water | |
| Liquid temperature range: | -10 .. 60 °C | |
| Selected liquid temperature: | 20 °C | |
| Density: | 998.2 kg/m³ | |
| Technical: | ||
| Nominal flow rate at 50 Hz: | 67 l/h | |
| Number of dosing heads: | 1 | |
| Approvals: | CE,EAC,CNROHSEX | |
| Non return valve type, inlet pump 1: | Standard | |
| Non return valve type, outlet pump 1: | Standard | |
| Max viscosity: | 100 mPas | |
| Materials: | ||
| Pump housing: | Aluminium | |
| Dosing head, pump 1: | Plastic | |
| PVDF | ||
| Valve ball: | Ceramic | |
| Al2O3 | ||
| Valve seat: | Composite | |
| PTFE | ||
| Valve gasket: | PTFE | |
| Composite | ||
| Installation: | ||
| Max operating pressure at 50 Hz: | 10 bar | |
| Maximum permissible inlet pressure: | 5 bar | |
| Type of inlet connection: | Connection pack | |
| Type of outlet connection: | Connection pack | |
| Size of inlet connection: | 19/27, 20/25 | |
| Size of outlet connection: | 19/27, 20/25 | |
| Electrical data: | ||
| Power input P1: | 0.2 kW | |
| Mains frequency: | 50 Hz | |
| Max. frequency: | 50 Hz | |
| Rated voltage: | 3 x 230/400 V | |
| Enclosure class (IEC 34-5): | IP65 | |
| Cable included (Yes/No): | N | |
| Power plug: | No plug | |
| Others: | ||
| Net weight: | 15 kg | |
| Gross weight: | 26.3 kg | |
| Shipping volume: | 0.156 m³ | |
| Diaphragm Leakage Detection: | N | |
| Country of origin: | DE | |
| Custom tariff no.: | 8413509060 | |
Estimated Delivery Time Frame:7-14 business days
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Reference ID: 14906299
