Stuart CH 4-50 B (50Hz)

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Centrifugal Horizontal Pump Multistage

Designed to provide a pressurised water supply from a break tank in either a positive or negative head application. CH 4-50 B Multistage Boostamatic pumps are self priming up to 5 metres and do not rely on a gravity flow of water to activate. With flow rates up to 135 litres/minute and heads up to 51 metres, these pumps are suitable for commercial or domestic use, pumping hot or cold water and are supplied with G 1 flexible hoses and adaptors.

Key Features
  • Flow rates up to 135 litres per minute and heads up to 51 metres
  • Fully automatic control
  • No pulsing during operation
Technical Specification
Product Code 46595
Guarantee 2 years
WRAS approval 1601057
Approvals WRAS, CE
Pump type Centrifugal Multistage
Pump control Pressure/Flow Switch
Anti-vibration feet
Inlet strainer(s)
Flexible hoses 2
Run on timer 3 seconds
Dry run protection
Priming vent plug
Self priming
Typical noise 69 dB(A)
Pump body Brass / stainless steel
Impeller Stainless steel
Mechanical seal EPDM/Carbon/Ceramic
Maximum head - closed valve 51 metres
Performance @ 50 l/min 46 metres
Performance @ 100 l/min 26 metres
Maximum flow 135 l/min
Minimum static inlet pressure 1 metres
Maximum static inlet pressure 10 metres
Maximum static outlet pressure 13 metres
Maximum working pressure* 900 kPa / 9 bar
Maximum ambient air temperature - continuous 40 °C
Maximum ambient air temperature - intermittent 50 °C
Min / Max water temperature** Min 4 °C / Max 65 °C
Cut out flow 1 l/min (approx)
Cut in pressure 290 kPa / 2.9 bar
Pressure vessel air pre-charge 2.8 bar / 40.6 psi
Maximum suction lift*** 4.6 metres
Pump connections (Inlet) G 1 M
Pump connections (Outlet) G 1 M
Flexible hoses
Connections G 1 M x G 1 F x 300 mm long
Anti-vibration hose (diameter) G 1
Type Induction, auto-reset thermal trip
Duty rating Continuous (S1)
Power supply (Vac/Ph/Hz) 230 V a.c. / 1 / 50 Hz
Power consumption - P1 1650 Watts
Current - full load 7.3 Amps
Fuse rating 13 Amps
Power cable length 1.5 metres (pre-wired)
Enclosure protection IPX5
Length 469 mm
Width 187 mm
Height -excluding hoses 332 mm
Weight - including fittings 18.2 Kg
GTIN 13 DIGIT 5050400465959
* The maximum pressure that can be applied to the pump under any installation conditions.
** A stored water temperature of 60 oC is considered sufficient to meet all normal requirements and will minimise deposition of scale in hard water areas.
*** A suction lift of up to 4.6 metres can be achieved if a footvalve and strainer is used.
Compare Models
Description Part Number
Stuart CH 4-30 B (50Hz) 46593
Stuart CH 4-40 B (50Hz) 46594
Stuart CH 4-50 B (50Hz) 46595
Stuart CH 4-60 B (50Hz) 46610