JS-250SV 230v Automatic Agma Sewage Vortex Pump

Description

The JS Pumps JS-250SVAG 230v Automatic AGMA (code 011-250AG) is the JS-250SV fitted with an AGMA vertical float switch mounted on the pump, for automatic operation on mains power. It delivers up to 240 litres per minute and lifts to a maximum head of 6.5 metres from a 0.25 kW motor, through a 1½” outlet, on a standard 230v single-phase mains supply, drawing 1.9 A. It passes soft solids up to 36 mm.

The AGMA switch is a vertical tube float mounted on the side of the pump, so there is no float on a loose cable to tangle or catch on the pit wall. It makes this version wider than the others, 215 mm against 160 mm. The JS-250SV 230v Automatic MAC-3 uses a tethered MAC-3 ball float instead, and the JS-250SV 230v Manual has no float at all. The same pump is also available as the 110v automatic AGMA version.

If 6.5 metres of head is not enough, the JS-400SV 230v steps up to a 2-inch outlet and a cast iron vortex impeller, with 260 l/min and 7.5 m. For lighter domestic waste, the JS-150SV range is the smaller 1¼-inch pump.

The JS-250SV has a cast iron motor lid, lower motor and seal housing and pump chamber, with a stainless steel shaft and outer motor casing. The vortex impeller is plastic, and twin mechanical seals run in a lubricated chamber. Every version weighs around 15 kg, comes with 10 metres of power cable and has a 1½” BSP female outlet supplied with a 1½” BSP male hose tail. Maximum immersion depth is 7 metres.

Features

• Cast iron pump chamber, motor lid and seal housing
• Plastic vortex impeller, set back from the inlet so soft solids pass through
• Passes soft solids up to 36 mm
• Twin mechanical seals in a lubricated chamber
• Stainless steel shaft and outer motor casing
• 0.25 kW motor, 230v, 1.9 A
• Up to 240 l/min and 6.5 m head
• 1½” BSP female outlet with 1½” BSP male hose tail
• AGMA vertical float switch mounted on the pump for automatic operation
• Fits the SR50 coupling foot and claw for guide rail installation
• 10 metres of power cable; maximum immersion 7 metres
• 415 x 215 x 260 mm (H x W x L), around 15 kg

Applications

• Light-duty sewage and foul water sumps in houses, annexes and garden rooms
• Smaller pits where a swinging float would catch on the walls
• Grey water from showers, sinks and utility rooms below drain level
• Dirty water and drainage sumps
• Clean water transfer

JS rates this pump for light-duty sewage, dirty water and clean water. A vortex pump does not cut or macerate, so it is not suited to small-bore pressure pipework or heavy commercial sewage; for those, look at the JS GS grinder pumps or the larger JS SV single-phase sewage pumps. It is not designed for oils, fuels, solvents or chemicals. Check the curve before you buy: at 4 metres of head the pump gives roughly 100 l/min, and flow falls to nothing at 6.5 metres.

The JS-250SV range

Flow and head are maximums from the JS-250SV performance curve above. See the JS-250SV sewage vortex pump range page to compare every version and for answers to common questions.