JS GST-15 1 ⅟₄” 400v Grinder Sewage Submersible Pump

Description

The JS Pumps GST-15 (code 020-715) is a three-phase submersible sewage grinder pump with a 1.5 kW, 400v motor and a 1¼” outlet. Its cutter and high-chrome grinder ring shred soft solids before the impeller, and the pump delivers up to 190 litres per minute with a maximum head of 22 metres.

Compared with the GST-12, it uses the same 1¼” outlet but lifts 3 metres higher and holds more of its flow as the head rises, which helps on longer or steeper rising mains. It is the three-phase version of the single-phase GS-1500. If you need more flow or head, the 2″ GST-22 and GST-37 are the next steps up.

The pump body, impeller, oil chamber and motor covers are cast iron, the motor case and shaft are stainless steel, and the cutter and grinder ring are high-chrome cast iron. The mechanical seal is silicon carbide and carbon, running in an oil chamber, and the motor has a built-in overload protector. JS Pumps offers the pump free standing or guide rail mounted, so it can sit on a coupling foot and be lifted out of the chamber for servicing. The outlet is 1¼” (32 mm) and the pump comes with 10 metres of power cable.

Features

• 1.5 kW motor, 400v three phase
• Up to 190 l/min and 22 m head
• 1¼” (32 mm) outlet
• High-chrome cutter and grinder ring, rated by JS Pumps at up to 28,000 cuts per minute
• Cast iron pump body and impeller, stainless steel motor case
• Silicon carbide and carbon mechanical seal in an oil chamber
• Free standing or guide rail mounted
• 10 metres of power cable

Applications

• Sewage pumped uphill to a high manhole or sewer connection
• Long small-bore rising mains from outbuildings or annexes
• Farm and commercial buildings with a three-phase supply
• Package sewage stations needing more head than the GST-12

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. It has no float switch, so it needs a three-phase control panel with level control.

The JS GST grinder range

Flow and head are maximums read from the performance curve above. See the JS GST grinder sewage pump range page for help choosing between models, or the JS GS range for single-phase versions.