Monarch BSE-S150 Electric Motor Driven Utility Pump & Repair Parts
High-Volume Water Transfer: The Monarch BSE-S150
The Monarch BSE-S150 Electric Motor Driven Utility Pump steps up performance for demanding agricultural and residential applications. Powered by a robust 1-1/2 HP Capacitor Start motor, this unit is significantly more powerful than the smaller S-series models, offering increased flow rates and pressure capabilities. It is designed with larger 2-inch NPT suction and discharge ports, making it the ideal choice for high-volume water transfer, extensive lawn sprinkling systems, and rapid dewatering.
Built to last, the BSE-S150 features a heavy-duty cast iron casing and impeller. Durability is further enhanced by the pump’s smart engineering: the semi-open cast iron impeller is “blind hole tapped.” This ensures that the liquid being pumped never comes into contact with the motor shaft, preventing corrosion and extending the life of the motor—even when handling mild salt water or liquid fertilizers.
Key Features and Benefits
- 1.5 HP High-Performance Motor: Delivers powerful pumping action suitable for larger irrigation zones and faster dewatering tasks.
- 2-Inch NPT Ports: Larger suction and discharge ports allow for significantly higher flow volume compared to the 1-1/4″ models.
- Rapid Self-Priming: The large casing design holds a substantial volume of water, allowing the pump to re-prime itself quickly and automatically after the initial fill.
- Corrosion-Resistant Design: The blind-hole tapped impeller protects the motor shaft from liquid contact, preventing rust and seizure.
- Easy Maintenance: Features a Square Flange motor design and a garden-hose-ready priming plug for easy operation without specialized tools.
Common Applications
- Large Irrigation Systems: Provides high flow (up to 102 GPM) for extensive sprinkler networks.
- Flood Control: Rapidly moves dirty water from basements, sumps, and low-lying areas.
- Agricultural Transfer: Suitable for filling nurse tanks or moving liquid fertilizers.
- Commercial Utility: A reliable workhorse for general water circulation and transfer duties.
Technical Specifications
| General Specifications | |
|---|---|
| Model Number | BSE-S150 |
| Order Number | 615634 |
| Horsepower (HP) | 1 1/2 HP |
| Suction / Discharge | 2″ NPT x 2″ NPT |
| Motor Type | Capacitor Start (Square Flange) |
| Electrical Characteristics | 1 Phase / 60 Hz / 115/230V |
| Shipping Weight | 52 lbs |
| Impeller Material | Semi-open, Cast Iron |
Dimensions
| Model | Discharge (A) | Suction (B) | Priming Plug (C) | Drain Holes (D) | Mounting (E) |
|---|---|---|---|---|---|
| BSE-S150 | 2″ | 2″ | 3/4″ | 3/4″ | .44 x .94 |
| F | G | H | J | K | L | M | N | P | Q |
|---|---|---|---|---|---|---|---|---|---|
| 4.25 | 2.12 | 8.50 | 11.12 | 4.88 | 8.50 | 16.80 | 3.18 | 7.37 | 3.00 |
Performance Data
| Performance Chart (Capacities in U.S. GPM) | ||||||
|---|---|---|---|---|---|---|
| Model | HP | 20 ft | 30 ft | 40 ft | 50 ft | 60 ft |
| BSE-S150 | 1 1/2 | 102 | 78 | 55 | 35 | 8 |
Repair Parts
| Ref. # | Part Code # | Qty Required | Description |
|---|---|---|---|
| 1 | 438029 | 1 | Casing – 2″ Sq. Fl. |
| 2 | 438121 | 1 | Impeller – 1 1/2 Hp Sq. Fl. |
| 4 | 438245 | 1 | Sq. Fl. Motor Mount |
| 5 | 438242 | 1 | Seal Plate Adapter – Sq. Fl. Motor |
| 9 | 246801 | 1 | End Cap |
| 21 | 164651 | 4 | Stud 3/8 UNC x 2 |
| 21 | 119990 | 8 | Bolt 3/8 UNC x 3/4 |
| 23 | 227830 | 4 | Nut 3/8 UNC |
| 34 | 176230 | 4 | Spring Washer |
| 35 | 174220 | 4 | Alum Washer |
| 38 | 185650 | 2 | Pipe Plug – 3/4 NPT |
| 39 | 193930 | 1 | Gasket (Specific to S150/S200) |
| 40 | 191790 | 1 | Flinger |
| 45 | 240104 | 1 | Seal 5/8 I.D. Type A (Verify Type) |
| 45 | 240316 | 1 | Seal 5/8 I.D. Type B (Verify Type) |
| 50 | 204179 | 1 | Motor – 1 1/2 Hp – 115/230V – Sq. Fl. |
Frequently Asked Questions
What is the difference between the BSE-S150 and the smaller BSE-S models?
The BSE-S150 features a more powerful 1.5 HP motor and significantly larger 2-inch suction and discharge ports (compared to 1.25″ on smaller models), allowing for much higher water volume transfer.
Does the BSE-S150 use bolts or studs for the casing?
Unlike the S50, S75, and S100 which use bolts, the BSE-S150 (and S200) uses 4 Studs (Ref 21) and Nuts (Ref 23) to secure the casing, due to the larger size and pressure.
Is this pump capable of pumping salt water?
Yes. The semi-open cast iron impeller is blind-hole tapped, which prevents the liquid from contacting the motor shaft. This design protects the shaft from corrosion caused by salt water or fertilizers.
What voltage is required for the BSE-S150?
The motor is a single-phase, capacitor start model that can run on 115V or 230V. Always check the wiring diagram on the motor nameplate before connecting power.