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JS GS & GST Sewage Grinder Pumps

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GS and GST series are submersible grinder pumps with tungsten carbide cutters and grinding rings which allow up to 28,000 cuts per minute. Ideal for domestic and industrial applications where either high heads or long distances prohibit the use of standard submersibles or large bore discharge pipe is not available or uneconomical to install. 230 Volt and 110 Volt versions are fitted with a float switch for automatic operation.

GS and GST pumps all have double mechanical seals which ensure long life and reliability.

Specifications Materials
►Power cable: 10 Metres ►Pump body: Cast iron
►See table for individual specs ►Impeller: Cast iron
  ►Shaft & motor casing: Stainless steel
  ►Mechanical seal: CA/CE/SIC


Click the Video Tab below to see this pump in action!

All pumps listed below are supplied as free standing, guide rails for pump mounting are available as an optional extra. Please contact us on 01777 871100 if this is required. 

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Delivery Costs

Delivery Map


Zone 1 England, Wales & Southern Scotland Under £100 Over £100
Standard 2/3 working days


Express Next working day


Premium Next working day (before 13.00)


Zone 2 Scottish Highlands & Islands, Northern Ireland, Isle of Man, Scilly & Channel Isles Under £100 Over £100
Standard 2/3 working days


Zone 3 Republic of Ireland Under £100 Over £100
Standard 3/5 working days




Orders must be placed before 14.00 for next day and premium next day delivery. 


Exporting Internationally

We offer a first class worldwide export service. Please contact us here for a price.
Model Voltage Power Outlet Max. Flow Max. Head Float Switch SKU Price ex-VAT Qty
GS-1200 230V 1.2 kW 1-1/4" 120 l/min 20 m YES 020-702A £558.40
GS-1500 230V 1.5 kW 1-1/4" 150 l/min 25 m YES 020-707A £656.80
GS-1200 110V 1.2 kW 1-1/4" 120 l/min 20 m YES 020-704A £558.40
GST-12 400V 1.2 kW 1-1/4" 120 l/min 20 m NO 020-712 £526.40
GST-15 400V 1.5 kW 1-1/4" 150 l/min 25 m NO 020-715 £624.80
GST-22 400V 2.2 kW 2" 320 l/min 26 m NO 020-720 £780.00
GST-37 400V 3.7 kW 2" 320 l/min 36 m NO 020-737 £927.20
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Whisper Pumps Ltd, Leen Court, Boughton, Newark, Nottinghamshire, NG22 9ZD