Franklin Electric MH-QP 9AMH4B 1.50kW Variable Speed Constant Pressure Pump 

The Franklin Electric MH-QP 9AMH4B Variable Speed Constant Pressure Pump delivers powerful, efficient, and automatic water pressure control for large domestic, commercial, and industrial systems. Featuring Franklin’s proven stainless-steel MH multistage pump hydraulics paired with an integrated DrivE-Tech Variable Frequency Drive (VFD), the MH-QP 9AMH4B maintains a steady outlet pressure by automatically adjusting motor speed to meet demand — providing quieter operation, reduced wear, and energy savings of up to 50 % over fixed-speed systems.

Unlike the MH-Mini Series (configured via smartphone), the MH-QP Series allows all setup and adjustment directly from the drive interface, making it ideal for mine sites, industrial plants, and secure facilities where Bluetooth or mobile devices are restricted. With its durable stainless-steel construction, compact 8 L pressure tank, and user-friendly LCD drive, this pump offers constant pressure performance built to withstand demanding applications.

APPLICATIONS

• Commercial and industrial water pressure systems
• Large domestic or rural water supply
• Irrigation and sprinkler installations
• Rainwater harvesting and tank-fed systems
• Wash-down bays and processing areas
• Mine-site and restricted environments (no smartphone setup required)

FEATURES

• Integrated on-drive configuration — no smartphone required
• Variable-speed constant-pressure operation via DrivE-Tech VFD
• Robust 300 series stainless-steel body, impellers, and diffusers
• Compact system with 8 L stainless-steel pressure tank
• Up to 50 % energy savings compared with fixed-speed systems
• Soft-start / soft-stop for longer system life and quieter performance
• Over-voltage, under-voltage, over-current, and dry-run protection
• Simple LCD keypad interface for setup and pressure adjustment
• IP66-rated drive suitable for dusty or damp environments
• Complies with AS/NZS 4020 for potable water use
• Made in Italy & approved by Brisbane City Council

SPECIFICATIONS

• Model: MH-QP 9AMH4B
• Power: 1.50 kW (2.0 HP)
• Max Flow: 250 LPM
• Max Pressure: 470 kPa (4.7 bar)
• Voltage: 230 V (Single Phase input → 3-phase output via VFD)
• Frequency: 50 Hz
• Motor: Asynchronous IE3, TEFC, Class F insulation, IP55 protection
• Drive Unit: Integrated DrivE-Tech VFD (IP66 rated)
• Inlet: 1½″ BSP MH
• Outlet: 1¼″ BSP MH
• Max Working Pressure: 10 bar
• Ambient Temperature: Max 40 °C
• Liquid Temperature Range: –15 °C to 110 °C
• Tank Capacity: 8 L (stainless steel)
• Weight: ≈ 19 kg
• Compliance: AS/NZS 4020 Drinking Water / Brisbane City Council Approved

INCLUDED

• Franklin Electric 9AMH4B Multistage Pump
• Integrated DrivE-Tech Variable Speed Controller
• 8 L Stainless Pressure Tank
• Pressure Transducer with 2 m Cable
• Pre-wired Power Lead (AU/NZ Plug)
• User Manual