JS RS submersible drainage pump

The JS RS submersible drainage pump range is engineered for high-performance clean and dirty water handling. Built with a corrosion-resistant stainless steel outer casing and cast iron lower housing, the RS series is designed specifically for demanding, continuous-duty dewatering tasks.

Featuring a top-discharge design, water flows directly over the motor housing as it pumps. This continuous internal cooling mechanism allows the JS RS range to operate safely in low-level water conditions without overheating.

Key Features & Specifications

• Top Discharge Cooling: Enables continuous operation even during low-water dewatering.
• Heavy-Duty Construction: Stainless steel motor casing and shaft paired with a durable cast iron volute.
• Dual Voltage Options: Available in 110V (site-safe) and 240V (standard mains) configurations across all models.
• Operation Types: Choose between manual operation or automatic switching via an Agma magnetic tube float (ideal for tight sumps) or a classic Mac-3 cable float switch.
• Twin Oil-Bathed Mechanical Seals: Delivers long-term sealing protection and extended motor lifespans.

Available JS RS Submersible Drainage Pump Models

Select your required model, voltage, and switch type from the drop-down options above:

• RS-150 (0.15kW): Compact 1¼” outlet model handling up to 120 L/min with a maximum head of 7m. Ideal for light-duty sump drainage, small water features, and tight space clearance.
• RS-250 (0.25kW): 1½” outlet pump moving up to 180 L/min with a maximum head of 9m. Perfect for entry-level commercial drainage and domestic pit clearance.
• RS-400 (0.4kW): 2″ outlet handling up to 240 L/min with a maximum head of 12m. Designed for medium-duty sump drainage and site dewatering.
• RS-550 (0.55kW): Upgraded performance with a heavy-duty cast iron impeller, delivering up to 300 L/min flow rates with a 13m maximum head.
• RS-750 (0.75kW): The flagship model in the range, capable of moving up to 345 L/min with a maximum head of 15m for demanding lift operations.

Common Applications

The JS RS series is widely specified across UK industries for:

• Basement, cellar, and plant room sump dewatering.
• Construction site and excavations water clearance.
• Water feature and pond circulation.
• Light industrial effluent and dirty water transfer.

We also supply a 415V 3-Phase version

Key Details

• Maximum Head: up to 16m
• Maximum Flow: up to 350 litres/min
• 1¼” (RS-150), 1½ (RS-250) or 2″ (RS-400, RS-550, RS-750) outlet
• Manual, automatic with Mac-3 float or automatic with Agma magnetic float for small sump installation
• 110V or 230V
• All supplied complete with 10 metres of power cable and hose tail.