CH 4-30 PS - Centrifugal multistage pressure set


The CH 4 pressure sets are designed to meet system demands in larger domestic and light commercial applications.

The multistage pump is mounted on to a WRAS approved 24 litre diaphragm tank providing a buffer of pressurised stored water.  Ideally suited to boost stored cold water supplies to un-vented hot water cylinders/combination boilers where there is low or no mains water supply.

Supplied with G1 flexible hoses and adaptors.

Technical Specification

Product code 46601
Guarantee 2 years
WRAS approval Approved materials
Pump type Centrifugal
Mechanical seal EPDM / Carbon / Ceramic
Anti-vibration feet  
Inlet strainer(s)  
Flexible hoses 2
Run on timer 3 sec
Dry run protection  
Diaphragm tank size 24 litres
Diaphragm tank water capacity 12 litres
Pump body Brass / Stainless steel
Impeller Stainless steel
Maximum head (closed valve) 2.6 bar
Performance @ 45 l/min 2.2 bar
Performance @ 90 l/min 1.3 bar
Maximum flow 127 l/min
Minimum static inlet pressure 1 metre
Maximum static inlet pressure 10 metres
Maximum static outlet pressure 13 metres
Maximum working pressure* 600 kPa (6 bar)
Maximum ambient air temperature 40 °C
Min / Max water temperature Min 4 °C / Max 35 °C
Flow switch sensitivity (approx) 1.0 l/min
Pressure vessel air pre-charge 1.3 bar (19 psi)
Cut in flow 1 l/min
Cut in pressure 140 kPa (1.4 bar)
Pump connections G 1 male
Flexible hoses
Connections G 1 male x G 1 female x 300 mm long
Type Induction type, thermally protected
Duty rating Continuous (S1)
Power supply/phase/frequency 230 V a.c./ 1 / 50 Hz
Current (full load) 3.5 Amps
Power consumption 775 Watts
Fuse rating 13 Amps
Power cable (pre-wired) 1.5 metres
Enclosure protection IPX5
Length 521 mm
Width 280 mm
Height (excluding hoses) 647 mm
Weight (including fittings) 17.3 Kg

* The maximum pressure that can be applied to the pump under any installation conditions.

Product Variants
Part no Description
46601 CH 4-30 PS
46602 CH 4-40 PS
44622 CH 4-50 PS
44624 CH 4-60 PS