Goulds GS Submersible Pumps for Rainwater Harvesting Cisterns

Goulds GS Submersible Pumps for Rainwater Harvesting Cisterns

Efficient Submersible Pumps for Rainwater Cisterns

TheGoulds Water Technology GS Series standard‑capacity submersible pumps are a reliable and cost‑effective solution for rainwater harvesting systems, particularly in small to medium cistern applications where moderate flows and heads are required.

Designed for continuous submergence, the GS Series is well suited for installation inside rainwater cisterns when used in conjunction with a pump cooling jacket and floating filter intake. This configuration ensures proper motor cooling, improved water quality, and long pump life, key requirements in non‑potable water reuse systems.

Optimized for Rainwater Harvesting Systems

In rainwater harvesting applications, pumps must operate reliably in stored water with variable demand and minimal natural cooling. When installed inside a cooling jacket, GS pumps maintain adequate motor cooling even at low flow rates. A floating filter intake allows the pump to draw water from just below the surface of the cistern, avoiding settled sediment and improving system performance.

The GS Series is commonly used in rainwater systems supplying:

Toilet and urinal flushing
Irrigation zones
Mechanical and cooling make‑up water
Process and washdown applications
Transfer pumping to day tanks or booster systems

Features & Benefits

Ideal for Use with Cooling Jackets
Enables reliable operation in cisterns where natural well flow is not present.

Compatible with Floating Filter Intakes
Improves water quality by drawing from the cleanest zone in the cistern.

Proven Multistage Pump Design
Smooth, consistent flow across a wide range of operating points.

Stainless Steel Construction
Corrosion‑resistant stainless-steel casing, motor adapter, and discharge head ensure long service life in stored rainwater.

Built‑In Check Valve
Reduces reverse flow and protects piping and downstream equipment.

Compact, Lightweight Design
Well suited for smaller pump vaults, cisterns, and retrofit installations.

Common Rainwater Harvesting Use Cases

Residential and light commercial rainwater systems
Educational and institutional buildings
Retail and office flushing systems
Landscape irrigation cisterns
Rainwater reuse systems with day tanks and booster pumps

Specifications

The GS is available in 115V/230V/460V/575V, single or three phase, 1/2 to 5 HP. All pumps have a 1-1/4" discharge connection and have a diameter of 3.90".

Pump Series: