Description
The JS Pumps GS-1200 230v Automatic (code 020-702A) is a submersible sewage grinder pump with a MAC 3 float switch, so it starts and stops itself as the sump fills and empties. Its cutter and high-chrome grinder ring shred soft solids into fine particles, letting it pump up to 190 litres per minute and lift to 19 metres of head through a 1¼” outlet. The 1.2 kW motor runs on 230v single-phase mains and draws 9.9 A.
This is the simplest way to drain a domestic sewage sump without a separate controller. Allow room in the chamber for the float to rise and fall freely. If you would rather control the pump from a panel, choose the GS-1200 230v Manual; if you need more lift, the GS-1500 230v Automatic reaches 22 metres.
The pump body, impeller, motor top cover and lower bearing and seal housing are cast iron, and the motor case is stainless steel. Twin mechanical seals (carbon ceramic and silicon carbide) run in a lubricated oil chamber. The side vertical outlet is removable, so the pump can stand free with the hose tail supplied or sit on a guide rail coupling foot for easy lifting out. It comes with 10 metres of power cable.
Features
- MAC 3 float switch for automatic operation
- High-chrome cutter and grinder ring, rated by JS Pumps at up to 28,000 cuts per minute
- Up to 190 l/min and 19 m head
- 1.2 kW motor, 230v single phase, 9.9 A
- 1¼” (32 mm) side vertical outlet with hose tail
- Twin mechanical seals in an oil chamber
- Free standing or guide rail mounted
- 10 metres of power cable
Applications
- Basement bathrooms and cellar conversions on mains power
- Annexes, holiday lets and garden offices with no gravity drain
- Small sewage sumps that need to run unattended
- Replacing an existing 230v grinder pump in a domestic chamber
Designed for sewage and waste water containing soft solids. Not suitable for sand, gravel, stones or other hard debris, which wear or jam the cutter, or for oils, solvents, chemicals or flammable liquids.
The JS GS grinder range
| Model | Voltage | Operation | Outlet | Max Flow (l/min) | Max Head (m) | Motor (kW) | Current (A) | Code |
|---|---|---|---|---|---|---|---|---|
| GS-1200 230v Manual | 230v | Manual | 1¼” | 190 | 19 | 1.2 | 9.9 | 020-702 |
| GS-1200 230v Automatic | 230v | Automatic | 1¼” | 190 | 19 | 1.2 | 9.9 | 020-702A |
| GS-1200 110v Manual | 110v | Manual | 1¼” | 190 | 19 | 1.2 | 20 | 020-704 |
| GS-1200 110v Automatic | 110v | Automatic | 1¼” | 190 | 19 | 1.2 | 20 | 020-704A |
| GS-1500 230v Manual | 230v | Manual | 1¼” | 190 | 22 | 1.5 | 12 | 020-707 |
| GS-1500 230v Automatic | 230v | Automatic | 1¼” | 190 | 22 | 1.5 | 12 | 020-707A |
Flow and head are JS Pumps’ published maximums. See the JS GS grinder sewage pump range page for help choosing between models, or the JS GST range for three-phase 400v versions.
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