Goulds e‑GS Submersible Pump for Rainwater Harvesting Cisterns

Goulds e‑GS Submersible Pump for Rainwater Harvesting Cisterns

High‑Capacity Submersible Pumps for Rainwater Harvesting Systems

TheGoulds Water Technology e‑GS High-Capacity submersible pump series is a proven solution for large rainwater harvesting cisterns where reliable flow, energy efficiency, and long service life are critical. Originally designed for well applications, these stainless‑steel pumps are well suited for submerged cistern installations using manufacturer-approved cooling jackets and floating filter intakes, as commonly employed in commercial and institutional rainwater reuse systems.

When installed within a pump cooling jacket, the e‑GS pump ensures proper motor cooling even under low‑flow cistern conditions. Paired with a floating filter intake, the pump draws the cleanest water from just below the water surface, thus reducing sediment ingestion and improving overall system performance.

Designed for municipal, commercial, irrigation, industrial, and rainwater harvesting systems, the e‑GS series offers up to 13% improved efficiency over previous GS models, helping meet modern energy standards without sacrificing performance.

Features & Benefits

Compatible with Pump Cooling Jackets
Supports proper motor cooling in low‑velocity cistern environments where natural well flow is not present.

Ideal for Floating Filter Intakes
Works seamlessly with floating suction assemblies to draw the highest‑quality water while minimizing sediment pickup.

High‑Efficiency Hydraulics
Advanced impeller and diffuser design delivers strong performance with reduced electrical consumption.

All Stainless‑Steel Construction
Corrosion‑resistant casing, discharge head, and motor adapter provide long service life in stored rainwater.

Integrated Stainless‑Steel Check Valve
Helps prevent reverse flow and protects downstream piping and treatment equipment.

Excellent Particulate Tolerance
Designed to handle minor suspended solids often present in harvested rainwater.

Specifications

Pump End

The e-SV pump is a non-self-priming vertical multistage pump coupled to a standard motor.

The liquid end, located between the upper cover and the pump casing, is held in place by tie rods. The pump casing is available with different configurations and connection types.

Power Range: 1-10 HP
Delivery: up to 600 GPM
Head: up to 1200 feet
Temperature of pumped liquid: -20ºF to 250ºF (-30ºC to 120ºC) standard version
Maximum operating pressure – with oval flanges: 230 PSI (15 bar) – with round flanges or Victaulic: 360 PSI (25 bar) – SV33, 46: 230, 360 or 575 PSI (16, 25 or 40 bar)* – SV 66, 92: 230 or 360 PSI (16 or 25 bar)*
Direction of rotation: clockwise looking at the pump from the top down (marked with an arrow on the adapter and on the coupling).
Based on pump staging*

Available Models:

35GS
45GS
65GS
85GS

Motor

Standard NEMA TC Frame motors in open drip proof or totally enclosed fan cooled.
3500 RPM nominal
Standard voltage:
Single phase version: 115-208/230 V, 60 Hz up to 3 HP or 208-230 V for 5 HP
Three phase version, 2 pole: 208-230/460 V, 60 Hz up 75 HP