Monarch MJSE-50 Series Self Priming Sprinkler Pump & Repair Parts
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Monarch MJSE-50 Series Self Priming Sprinkler Pump and Repair Parts
Monarch MJSE-50 Series Self Priming Sprinkler Pump is a professional-grade jet sprinkler utility pump designed for reliability and versatility. Whether you are boosting pressure for a residential water system, operating lawn sprinklers, or managing general clean water transfer applications, the Monarch MJSE-50 delivers consistent and dependable performance. Built with a heavy-duty cast iron housing and a high service factor motor, this 1/2 HP pump is engineered to withstand years of reliable service.
Key Features and Benefits
The MJSE-50 is packed with features designed for durability and ease of use. Below are the core specifications that make this pump a top choice for irrigation and utility needs:
Rugged Construction
- Seal Plate and Casing: Constructed from rugged cast iron and specially treated with an anti-rust primer coating. This ensures the pump housing resists corrosion and wear, even in tough outdoor environments.
- Durable Impeller: Features a precision-molded, glass-filled thermoplastic impeller. This design is extra smooth to ensure highest pump efficiency and longevity.
- Venturi and Built-In Nozzle: Made of abrasion-resistant thermoplastic, engineered specifically for optimum pressure and flow performance.
High-Performance Motor
- Industrial Grade Design: The motor is CSA approved with a higher than NEMA service factor. It features a dual compartment, open drip-proof design (ODP) for superior ventilation.
- Thermal Protection: Equipped with thermal overload protection to prevent overheating during extended use.
- Electrical Specs: Capacitor start for reliable ignition, single-phase, 3600 RPM, square flange design with a threaded motor shaft for positive impeller alignment.
Convenience and Connectivity
- Garden Hose Adapter: Includes a convenient adapter that provides an easy connection to any standard garden hose, making it perfect for utility applications.
- Power Cord Included: Comes with an 8-foot grounded power cord for instant connection to any standard 115-volt outlet.
Applications
The Monarch MJSE-50 is a versatile utility pump suitable for a wide range of water transfer tasks:
- Underground sprinkler systems.
- Lawn and garden sprinkling.
- Pressure boosting for residential lines.
- General purpose clean water draining and transfer.
Technical Specifications
General Model Information
| Model No. | Order No. | HP | SF (Service Factor) | Voltage | Ship Wt. (lbs.) | Description |
|---|---|---|---|---|---|---|
| MJSE-50 | 614431 | 1/2 | 1.90 | 115 | 36 | Cast iron body, jet sprinkler utility pump. |
Performance Chart (Capacities in U.S. GPM)
| Total Suction Lift (ft.) | Discharge Pressure in PSI | Shut-Off Head (ft.) | ||||||
|---|---|---|---|---|---|---|---|---|
| 20 | 25 | 30 | 35 | 40 | 45 | 50 | ||
| 5 | 12.8 | 12.5 | 12.3 | 12.1 | 11.2 | 9.5 | 6.9 | 64.2 |
| 10 | 11.5 | 11.3 | 11 | 10.8 | 10.4 | 8.5 | 6.0 | 62.0 |
| 15 | 9.8 | 9.7 | 9.6 | 9.5 | 9.4 | 7.3 | 4.7 | 59.9 |
| 20 | 8.3 | 8.1 | 7.8 | 7.7 | 7.6 | 5.7 | 3.5 | 57.7 |
| 25 | 5.6 | 5.5 | 5.5 | 5.4 | 5.3 | 4.7 | 2.3 | 55.5 |
Dimensions (Measured in inches)
| Model | A | B | C | D | E | F | G | H | I | Ship Wt. (lbs.) |
|---|---|---|---|---|---|---|---|---|---|---|
| MJSE-50 | 9.38 | 17.3 | 3.0 | 6.0 | 7.0 | 4.85 | 10.5 | 4.62 | 3.5 | 36 |
Monarch MJSE Series Repair Parts
| Ref. # | Code # | 1/2HP Qty. | Description |
|---|---|---|---|
| 1 | 469308 | 1 | Casing – blue |
| 2 | 200394 | 1 | Hose coupling |
| 4 | 247244 | 1 | Nozzle 16/64 |
| 5 | 468999 | 1 | Venturi 28/64 |
| 6* | 246233 | 1 | Diffuser |
| 7* | 468096 | 1 | Impeller 4.625 |
| 8 | 438247 | 1 | Handle |
| 9 | 120020 | 2 | Bolt, 3/8 UNC x 1-1/4 |
| 10 | 435023 | 1 | Cord assembly |
| 11 | 112545 | 1 | Adaptor |
| 12 | 112544 | 1 | Grommet |
| 13 | 246800 | 1 | Edge Trim 1/8″ |
| 14 | 185620 | 5 | Plug, 1/4 NPT |
| 15* | 240104 | 1 | Seal, 5/8 Dia. |
| 16* | 192785 | 1 | Gasket |
| 17 | 469107 | 1 | Seal Plate |
| 18 | 191790 | 1 | Flinger |
| 19 | 120030 | 2 | Bolt, 3/8 UNC x 1-1/2 |
| 20 | 438245 | 1 | Base Plate |
| 21 | 204073 | 1 | Mot. 1/2 HP 115/230V |
| 28 | 185640 | 1 | Plug, 1/2 NPT |
| N/S | 497151 | 1 | Minor Overhaul Kits (Includes; 7, 15 & 16) |
| N/S | 497155 | 1 | Major Overhaul Kits (Includes; 6, 7, 15, & 16) |
FAQs
Does the Monarch MJSE-50 pump come with a power cord?
Yes, the MJSE-50 includes an 8-foot grounded power cord designed for easy connection to any standard 115-volt outlet.
What is the voltage requirement for this sprinkler pump?
The Monarch MJSE-50 operates on standard 115V single-phase power.
Is the MJSE-50 pump self-priming?
Yes, this is a self-priming jet sprinkler utility pump. However, the casing must be filled with water before the first operation (priming).
What materials is the pump housing made of?
The pump seal plate and casing are built from rugged cast iron and treated with a special anti-rust primer coating for durability.
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