MH Horizontal Multistage Pumps
MH Horizontal Multistage Pumps
Proven performance. Enhanced reliability.
Franklin Electric’s MH horizontal multistage pumps provide versatile solutions for pressure boosting, HVAC systems, fertigation and industrial water applications.
The MH 3, 5 and 9 models feature improved residual air management. An innovative first stage with a priming valve and a seal housing disc with deflector help reduce air entrapment and cavitation risk, protecting the mechanical seal and supporting reliable start-up and consistent operation.
Residual air is removed both after priming and during normal operation, while the simplified casing design eliminates the need for a front filling plug.
Available in AISI 304 and AISI 316L stainless steel versions, the range includes MH 3, 5, 9, 15 and 20 models, offering flow rates up to 28 m³/h and a maximum operating pressure of 10 bar.
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Applications
- Water Distribution / Pressure Boosting
- Heating, cooling and HVAC circulation
- Irrigation / Gardening / Sprinklers
- Wash down systems
- Domestic, commercial and industrial water systems
Features
- AISI 304 or 316L stainless steel construction
- Stainless steel impellers and diffusers
- Oversized motor shaft and PPS floating neck ring
- Tie-rod reinforcement (MH 15–20)
- Easy maintenance
- Rp connections; optional NPT
- Easy maintenance
- Continuous air management (MH 3–5–9)
- Priming valve for reliable start-up (MH 3–5–9)
- Seal housing deflector for improved seal reliability (MH 3–5–9)
- Casing without front filling plug (MH 3–5–9)
Pump Specifications
- Flow: up to 29 m³/h
- Head: up to 104 m
- Maximum working pressure 10 Bar
- Max. altitude at nominal load: 1000 m
- Maximum ambient temperature: 40 °C
- Maximum liquid temperature: 55 °C (single-phase), 85 °C (three-phase domestic and commercial), 110 °C (three-phase industrial)
Motor Specifications
- Single-phase and three-phase versions
- Asynchronous, two-pole, fan-cooled motor
- Protection rating: IPX5
- Insulation class: F
- Built-in thermal protection on single-phase versions
- External thermal protection required on three-phase versions
Related Products
Mechanical Seal Specifications
Model Type Position A
Stationary partB
Rotating partC
Other componentsD
ElastomersTemperature [°C] EH 3-5-9 / EH DTm 3-5-9 E0 V B G E Ceramic alumina Carbon graphite AISI 316 EPDM -15 / 110 EH 15-20 E1 B Q G E Carbon graphite Silicon Carbide AISI 316 EPDM -15 / 110 ON REQUEST E2 Q Q G E Silicon Carbide Silicon Carbide AISI 316 EPDM -15 / 110 V3* Q Q G V Silicon Carbide Silicon Carbide AISI 316 FKM -10 / 110 V8* Q U G V Silicon Carbide Tungsten Carbide AISI 316 FKM -10 / 110 - * on request version with stopper pin
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3MH
Pump model Q = Delivery l/min 0 16,7 25 33,3 50 75 100 m³/h 0 1 1,5 2 3 4,5 6 US gpm 0 4,4 6,6 8,8 13,2 19,8 26,4 H = Total meters head of water column [m] 3MH02 22,4 20 18,7 15,5 9,7 3MH03 33,2 29,3 27,4 22,5 13,8 3MH04 43,7 38,3 35,6 29,1 17,5 3MH05 54 46,8 43,4 35,2 20,7 3MH06 65,1 56,7 52,6 42,8 25,4 3MH07 75,3 65,1 60,2 48,7 28,4 3MH08 87,6 77 71,7 58,8 35,6 3MH09 98 85,8 79,8 65,2 39,1 5MH
Pump model Q = Delivery l/min 0 25 33,3 50 75 100 116,7 133,3 m³/h 0 1,5 2 3 4,5 6 7 8 US gpm 0 6,6 8,8 13,2 19,8 26,4 30,8 35,2 H = Total meters head of water column [m] 5MH02 23,5 21,7 20,5 18,3 15 11,8 5MH03 34,8 31,9 30 26,5 21,3 16,5 5MH04 46,2 42,4 39,9 35,2 28,4 21,9 5MH05 57,3 52,1 48,8 42,7 34 25,8 5MH06 69,5 64 60,3 53,4 43,2 33,6 5MH07 80,7 73,9 69,5 61,3 49,2 37,9 5MH08 93,9 87,1 82,6 73,8 60,6 47,9 5MH09 105,4 97,5 92,3 82,4 67,4 53 9MH
Pump model Q = Delivery l/min 0 33,3 50 75 100 116,7 133,3 166,7 200 233,3 283,3 m³/h 0 2 3 4,5 6 7 8 10 12 14 17 US gpm 0 8,8 13,2 19,8 26,4 30,8 35,2 44 52,8 61,6 74,7 H = Total meters head of water column [m] 9MH02 23,7 22 20,8 19,7 18,9 18,1 15,6 11,9 6,9 9MH03 35,3 32,7 30,8 29,1 27,9 26,6 22,8 17,2 9,7 9MH04 47,4 44,2 41,9 39,7 38,2 36,5 31,7 24,3 14,4 9MH05 60,1 56,6 54 51,4 49,7 47,8 42,1 33 20,7 9MH06 71,8 67,4 64,2 61 58,9 56,5 49,5 38,5 23,7 9MH07 84,3 79,4 75,8 72,2 69,9 67,1 59,2 46,5 29,3 9MH08 96 90,3 86,1 81,9 79,2 76 66,8 52,2 32,5 15MH
Pump model Q = Delivery l/min 0 116,7 133,3 166,7 200 233,3 283,3 333,3 400 466,7 m³/h 0 7 8 10 12 14 17 20 24 28 US gpm 0 30,8 35,2 44 52,8 61,6 74,7 87,9 105,5 123,1 H = Total meters head of water column [m] 15MH02 28,5 25 24 22,9 21,7 19,2 15,9 10,3 15MH03 43,3 38,3 36,9 35,3 33,5 29,9 25 16,5 15MH04 57,9 51,4 49,5 47,4 45 40,3 33,8 22,5 15MH05 72,6 64,5 62,2 59,6 56,7 50,8 42,7 28,6 15MH06 87,5 78,2 75,5 72,5 69 62,1 52,5 35,6 15MH07 101,9 90,8 87,5 84 79,8 71,7 60,5 40,7 20MH
Pump model Q = Delivery l/min 0 133,3 166,7 200 233,3 283,3 333,3 400 466,7 533,3 m³/h 0 8 10 12 14 17 20 24 28 32 US gpm 0 35,2 44 52,8 61,6 74,7 87,9 105,5 123,1 140,9 H = Total meters head of water column [m] 20MH02 31,2 27,9 27,2 26,5 25,3 23,1 18,5 12,7 20MH03 46,8 41,9 40,8 39,8 37,8 34,6 27,7 19 20MH04 62,5 56 54,6 53,2 50,6 46,3 37,2 25,6 20MH05 78,5 70,6 68,9 67,3 64,1 58,9 47,6 33,2 -
3MH
Pump
modelQ = DELIVERY l/min 0 33 42 50 58 67 75 83 92 m³/h 0 2 2.5 3 3.5 4 4.5 5 5.5 US GMP 0 8.8 11.0 13.2 15.4 17.6 19.8 22.0 24.2 H = TOTAL M.HEAD OF WATER COLUMN [m] 3MH02 32.0 28.0 26.0 24.5 22.5 20.5 18.0 15.5 13.0 3MH03 47.5 41.0 38.5 35.5 32.5 29.5 26.0 22.5 18.5 3MH04 63.5 55.0 51.5 48.0 44.0 39.5 35.0 30.0 25.0 3MH05 80.5 70.5 66.0 62.0 57.0 51.5 46.0 40.0 33.0 3MH06 96.0 83.5 78.5 73.0 67.0 61.0 54.0 47.0 38.5 3MH07 113.0 99.0 93.5 87.0 80.5 73.0 65.0 56.5 47.0 5MH
Pump
modelQ = DELIVERY l/min 0 42 50 58 67 75 83 92 100 117 133 141.7 m³/h 0 2.5 3 3.5 4 4.5 5 5.5 6 7 8 8.5 US GMP 0 11.0 13.2 15.4 17.6 19.8 22.0 24.2 26.4 30.8 35.2 37.5 H = TOTAL M.HEAD OF WATER COLUMN [m] 5MH02 34.0 31.0 30.0 29.5 28.5 27.5 27.0 25.5 24.5 21.5 18.0 16.0 5MH03 50.5 46.0 45.0 44.0 42.5 41.5 40.0 38.0 36.5 32.0 27.0 23.5 5MH04 68.0 62.5 61.0 59.5 58.0 56.5 54.5 52.5 50.0 44.5 37.5 33.0 5MH05 85.0 79.0 77.0 75.5 73.5 71.5 69.0 66.5 64.0 57.0 48.0 43.0 5MH06 102.0 94.0 91.5 89.5 87.5 85.0 82.0 79.0 75.0 67.0 56.5 50.0 5MH07 120.0 111.0 108.5 106.0 103.5 100.5 97.5 94.0 90.0 80.0 68.0 60.5 9MH
Pump
modelQ = DELIVERY l/min 0 100 117 133 141.7 167 200 233 267 283.3 m³/h 0 6 7 8 8.5 10 12 14 16 17 US GMP 0 26.4 30.8 35.2 37.5 44.0 52.8 61.6 70.4 74.8 H = TOTAL M.HEAD OF WATER COLUMN [m] 9MH02 35.0 31.0 30.0 29.5 29.0 27.5 24.5 20.5 15.0 11.5 9MH03 52.5 46.5 45.0 44.0 43.5 41.0 37.0 30.5 22.5 17.5 9MH04 70.0 62.0 61.0 59.0 58.5 55.5 50.0 41.5 30.5 24.0 9MH05 87.5 77.0 75.0 73.0 72.0 68.0 61.0 50.5 37.0 29.0 15MH
Pump
modelQ = DELIVERY l/min 0 167 200 233 267 283.3 300 333.3 367 400 433.3 467 m³/h 0 10 12 14 16 17 18 20 22 24 26 28 US GMP 0 44.0 52.8 61.6 70.4 74.8 79.3 88 96.8 105.7 114.5 123.3 H = TOTAL M.HEAD OF WATER COLUMN [m] 15MH02 42.0 37.5 36.0 35.0 33.5 33.0 32.0 30.0 27.0 24.0 20.5 16.5 15MH03 63.0 56.0 54.0 52.5 50.0 49.0 47.5 45.0 41.5 37.0 31.5 27.0 15MH04 84.5 77.0 75.0 73.0 70.0 68.5 67.0 63.0 58.5 53.0 47.0 40.0 20MH
Pump
modelQ = DELIVERY l/min 0 200 233 267 283.3 300 333.3 367 400 433.3 467 500 m³/h 0 12 14 16 17 18 20 22 24 26 28 30 US GMP 0 52.8 61.6 70.4 74.8 79.3 88 96.8 105.7 114.5 123.3 132 H = TOTAL M.HEAD OF WATER COLUMN [m] 20MH02 45.5 40.5 39.5 38.5 38.0 37.5 36.0 34.5 33.0 31.0 28.0 25.0 20MH03 68.0 60.5 59.0 57.5 56.5 56.0 54.0 51.5 49.0 46.0 41.5 37.0 -
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