MH Series Pumps
Self-priming, non-clogging centrifugal pumps for municipal water management and dewatering.
The MERAJ MH Series handles water, wastewater, slurries and solids-bearing fluids in municipal and industrial pumping applications where dependable priming and solids passage are required. MERAJ identifies the MH and MT Series as heavy-duty, solid-handling, medium-head self-priming centrifugal pumps with re-prime functionality.
Built for Municipal Pumping.
The MH Series is available in 3", 4" and 6" configurations, with published maximum flow capacities from 370 to 1,360 GPM and maximum heads up to 210 ft. The pump range is designed for municipal pumping conditions involving diverse fluids, slurries, dewatering and solids handling.
Self-Priming Operation
Self-priming centrifugal construction supports applications where the pump must establish and restore suction without continuous manual priming.
Solids Handling
Non-clogging construction handles suspended solids, with published maximum solid-sphere passage up to 32 mm depending on pump size.
Re-Prime Capability
Re-prime functionality supports continued municipal and dewatering operation when suction conditions change.
Municipal Integration
Suitable for municipal water management, dewatering, wastewater transfer and other mobile or fixed pumping applications.
Choose Your Pump Size
Three sizes. Multiple municipal applications.MH 3"
Compact 3-inch MH Series pump configuration for municipal dewatering, fluid transfer and solids-handling applications.
- Suction 3" (75 × 75 mm)
- Discharge 3"
- Max. Head 210 ft
- Max. Flow 370 GPM
- Max. RPM 2,150
- Power 25 HP
- Net Weight 472 lb / 214 kg
- Impeller 11"
- Max. Solid Sphere 20.63 mm
MH 4"
4-inch MH Series pump configuration balancing increased flow capacity with municipal solids-handling capability.
- Suction 4" (100 × 100 mm)
- Discharge 4"
- Max. Head 190 ft
- Max. Flow 650 GPM
- Max. RPM 2,150
- Power 40 HP
- Net Weight 600 lb / 272 kg
- Impeller 11"
- Max. Solid Sphere 28.57 mm
MH 6"
6-inch MH Series configuration provides the highest published flow and solids-passage capacity in the MH range.
- Suction 6" (150 × 150 mm)
- Discharge 6"
- Max. Head 175 ft
- Max. Flow 1,360 GPM
- Max. RPM 2,250
- Power 100 HP
- Net Weight 910 lb / 413 kg
- Impeller 12.5"
- Max. Solid Sphere 32 mm
Performance
Rated at 700 RPM (UT-2) and 1000 RPM (UT-3)Operating Points
| Model | Flow (GPM) | Head (ft.) |
|---|---|---|
| UT-2 | 150 | 100 |
| UT-2 | 130 | 230 |
| UT-2 | 110 | 335 |
| UT-3 | 360 | 100 |
| UT-3 | 225 | 254 |
Performance Curve
Ideal For
- Fuel transfer
- Water transfer
- Dewatering
- Firefighting support
- Auxiliary systems
MH Series Performance
Published maximum ratings across all three MH Series pump sizes.
MH 3"
MH 4"
MH 6"
MH Series Technical Data
| Size | Max. Head | Max. Flow | Max. RPM | Power | Net Weight | Impeller | Max. Solid Sphere |
|---|---|---|---|---|---|---|---|
| 3" | 210 ft | 370 GPM | 2,150 | 25 HP | 472 lb / 214 kg | 11" | 20.63 mm |
| 4" | 190 ft | 650 GPM | 2,150 | 40 HP | 600 lb / 272 kg | 11" | 28.57 mm |
| 6" | 175 ft | 1,360 GPM | 2,250 | 100 HP | 910 lb / 413 kg | 12.5" | 32 mm |
Maximum Flow by Pump Size
Note: Values shown are based on published operating points.
Applications
Municipal Dewatering
Water removal for municipal drainage, infrastructure and maintenance operations.
Wastewater Transfer
Transfer of wastewater and other fluids containing suspended solids within the specified solids-passage capacity.
Sewer Bypass
Temporary pumping support for sewer maintenance, repair and bypass operations.
Slurry & Solids Handling
Non-clogging pumping for fluids containing suspended solids and light slurry.
Construction Dewatering
Water removal from excavations, infrastructure works and municipal construction sites.
Stormwater & Flood Removal
High-volume temporary pumping for accumulated stormwater and local flood-water removal.
Seal & Operating Features
Pump components are configured for municipal fluid-handling and dewatering service.
- Mechanical Oil-Lubricated SealsMechanical, oil-lubricated, double-floating and self-aligning seals support dependable pump operation.
- Silicon Carbide Seal FacesRotating and stationary seal faces use silicon carbide with stainless-steel metal components.
- Liquid TemperatureThe published maximum pumped-liquid temperature is 180°F / 83°C.
Optional Equipment & Materials
Configure the MH Series for application and operating requirements.
- Automatic Air Release ValveOptional air-release equipment supports pump-system operation and priming requirements.
- Casting HeaterOptional 120V / 230V casting heater configurations are available.
- Sea-Water MaterialsMaterial options are available for sea-water applications.
- Pump Protection OptionsA high pump-temperature shutdown kit and moisture probe gauge kit are available.
- ASTM FlangesOptional ASTM-standard suction and discharge flanges support system integration.
Need Help Selecting an MH Pump?
Choose the right MH pump based on flow, head, solids passage, fluid type and municipal pumping requirements.
After-Sales Support
Support Beyond Delivery
Keep your MERAJ pump supported throughout its service life.
MERAJ provides after-sales assistance for pump systems through its technical teams and service-partner network. Engineering records and product documentation help support maintenance, troubleshooting, replacement parts, and long-term pump operation.
Technical Support
Get technical assistance for pump operation, system troubleshooting, installation, and service requirements.
Service Network
Access support through MERAJ service teams and service partners when pump inspection, maintenance, or technical assistance is required.
Spare Parts Support
Get support for replacement pump components and compatible parts using available product and engineering records.
Maintenance Assistance
Receive service guidance to help maintain pump performance, system condition, and dependable operation throughout the product lifecycle.
