We've configured the RainMaster R128B series pumps with all of the best features and performance of any pumps in their class for the rainwater collection industry. The R128B-3C is a heavy-duty, high performance 115V/60Hz 1.25 horsepower 3-stage submersible pump with 1-1/4" threaded inlet to easily accept a floating extractor.
Construction consists of a 304 stainless steel housing, dual Italian mechanical seals, American thermal protection, GE-Noryl diffuser and impellers, external starting capacitor for serviceability and long life, 45 foot power cord, pump start box with master on/off switch and circuit breaker which also serves as a wire connection box.
The pump is particularly quiet and durable from its solid construction. The water end is installed under the motor which keeps the motor cooled with the pumped water. The Noryl impellers and diffusers offer high abrasion resistance while the Italian double mechanical seals ensure long life and enhance reliability.
The oil chamber is filled with non-toxic cooling oil. Ball bearings are self-lubricating and internal cast iron components are coated with polybutadiene varnish by electrophoresis to prevent corrosion which is sometimes associated with the typical lower pH of rainwater.
Installation may be oriented either vertical or horizontal so long as water is available at the intake to prevent a run-dry condition.
Pump Performance Curve:
Specifications:
Performance range:
Flow up to 34 gpm Head up to 180 ft
Inlet/Outlet size:
1-1/4" FPT
System pressure:
Up to 78 psi
GPM at 60 psi (0 Head)
13
GPM at 50 psi (0 Head)
17
Nominal voltage range:
110V - 120V, 60Hz, 14A max.
Power cord:
45', 16/3 with ground (H07RN-F 4X1.5mm˛)
P1kW:
1.24
P2kW:
0.95
Weight:
41 Lbs.
Dimensions:
7" X 7" X 22" (incl. base)
Thermal protection:
Yes
Motor:
2-pole induction, Continuous duty
RPM:
3450
Cooling:
Water cooled/intake
Insulation class:
F
Protection:
IP68
Certifications:
CE
Warranty:
1-year
Pump Start Box Wiring Diagram and Capacitor Location:
Electronic controller with integral flow regulation turns pump on and off when points of use are opened and closed while providing constant pressure without the need for additional pressure vessels along with built in dry run protection for your pump.
This model is specifically designed for 115V pumps.
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