Description
The JS Box 150 (code 9000-4060) is a compact domestic pumping station for grey water: a ready-made box with a JS Pumps JS-150SV vortex pump fitted, for lifting waste water from a basin, sink, bath or shower that sits below the drain. The pump delivers up to 125 litres per minute and a maximum head of 6.5 metres from a 0.15 kW motor, through a 1¼” outlet, on a 230v single-phase supply drawing 1.4 A. It switches automatically on an AGMA W float switch.
This is the smaller of the two JS Box models, measuring 352 x 300 x 400 mm (H x W x L) and weighing around 10 kg, so it is the better choice where space is tight. If you need more flow, larger soft solids or a longer lift, the JS Box 250 uses the bigger 1½-inch JS-250SV pump and gives up to 240 l/min. The pump is also sold on its own in the JS-150SV sewage vortex pump range, in manual and automatic versions for 230v and 110v.
The JS-150SV is a light pump with a plastic pump body, impeller, motor lid and lower motor housing, sealed by a single mechanical seal. Its vortex impeller sits back from the inlet and spins the water rather than forcing everything through the blades, so soft solids up to 25 mm pass with less risk of blockage.
Features
- Packaged grey water pumping station with the pump fitted
- JS-150SV vortex pump, 0.15 kW, 230v, 1.4 A
- Up to 125 l/min and 6.5 m maximum head
- Passes soft solids up to 25 mm
- Automatic operation with an AGMA W float switch
- 1¼” outlet
- 352 x 300 x 400 mm (H x W x L), around 10 kg
Applications
- Basement or cellar shower rooms below drain level
- Utility and kitchen sinks with no gravity fall to the drain
- Wash basins in garden rooms, offices and annexes
- Single-appliance grey water lifts on short, low runs
The JS Box 150 is for grey water only. It is not for toilet waste: for a WC, choose a Vacusystem sewage pump station. Keep it to short lifts, because flow falls quickly as the head rises: at 2 metres the pump gives roughly 100 litres per minute, and nothing at 6.5 metres. Our guide to reading a pump curve shows how to check the flow at your own lift. It is not designed for oils, fuels, solvents or chemicals.
On the performance curve below, read the lines marked 150 and 250. The line marked 30/300 belongs to a different pump and is not part of the JS Box range.

The JS Box range
| Model | Code | Pump fitted | Outlet | Max Flow (l/min) | Max Head (m) | Motor (kW) | Current (A) | H x W x L (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|
| JS Box 150 | 9000-4060 | JS-150SV | 1¼” | 125 | 6.5 | 0.15 | 1.4 | 352 x 300 x 400 | 10 |
| JS Box 250 | 9000-4065 | JS-250SV | 1½” | 240 | 6.5 | 0.25 | 1.9 | 452 x 400 x 600 | 16 |
Both models are 230v single phase. See the JS Box domestic pumping stations page to compare the two side by side and for answers to common questions.





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