Monarch NSPHE-300 Series Sprinkler Pump & Repair Parts
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Monarch NSPHE-300 Series Sprinkler Pump & Repair Parts
The Monarch NSPHE-300 is a high-performance self-priming sprinkler pump designed for large residential properties, turf farms, and commercial irrigation applications where single-phase power is utilized. Boasting a powerful 3 Horsepower motor, this pump bridges the gap between residential convenience and industrial durability.
Unlike the smaller “S” series models, the NSPHE-300 is built on a robust JM Frame motor platform. It features a heavy-duty cast gray iron impeller (exclusive to the 3HP and 5HP models) rather than plastic, ensuring exceptional longevity even under heavy workloads. With a massive flow rate capability and high-pressure output, this pump is perfect for driving multiple sprinkler heads, long-distance water transfer, and fire protection systems.
Key Features
- Powerful 3HP Single Phase Motor: Operates on standard 230 Volt single-phase power, making it accessible for residential estates and facilities without 3-phase wiring.
- Cast Iron Impeller: Equipped with a rugged cast gray iron impeller for superior durability and resistance to wear, distinguishing it from lower HP models.
- Self-Priming Efficiency: The large cast iron housing and built-in suction check valve ensure fast priming and prevent water backflow.
- JM Frame Construction: Features a commercial-grade JM frame motor with a stainless steel shaft sleeve for maximum protection.
- Maintenance-Free Seal: The mechanical seal is self-lubricating and self-adjusting, requiring zero maintenance during its lifespan.
- High Volume Performance: Delivers up to 124 GPM at 10 PSI, ensuring ample water volume for extensive irrigation zones.
Important Safety Note: While this is a single-phase motor, the 3 HP JM frame motor does not include built-in thermal overload protection. External overload protection must be installed in the control panel to prevent motor damage.
Applications
- Large Lawn & Turf Irrigation: Ideal for properties requiring high flow rates to cover extensive acreage.
- Fire Protection: Acts as a dependable standby pump for fire suppression systems.
- Water Transfer: Efficiently moves large volumes of water for agricultural or drainage purposes.
Technical Specifications
| Model | Suction | Discharge | CP | D | DC | E | F | G | H | L | O | S | Y | Z |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NSPHE-300 | 2″ NPT | 2″ NPT | 23.25″ | 4.50″ | 5.00″ | 3.75″ | 5.00″ | 4.00″ | 0.44″ | 14.75″ | 13.25″ | 6.00″ | 6.38″ | 3.00″ |
Performance Data
Capacities listed in U.S. Gallons Per Minute (GPM) based on discharge pressure at a 5 ft. lift.
| Model No. | HP | 10 PSI | 20 PSI | 30 PSI | 40 PSI | 50 PSI | Max. PSI |
|---|---|---|---|---|---|---|---|
| NSPHE-300 | 3 | 124 | 110 | 95 | 77 | 54 | 59 |
Electric Motor Specifications
| Model No. | Order No. | HP | SF | Voltage | Phase | Suct./Disch. | Ship Wt. |
|---|---|---|---|---|---|---|---|
| NSPHE-300 | 614404 | 3 | 1.15 | 230V Only | 1 | 2″ x 2″ | 134 lbs. |
Repair Parts
| Ref. | Code # | Qty (300B) | Description |
|---|---|---|---|
| 1 | 433109 | 1 | Casing |
| 2* | 433197 | 1 | Diffuser |
| 3* | 433196 | 1 | Impeller (Cast Iron) |
| 4 | 433141 | 1 | Adapter |
| 5 | 414730 | 1 | Valve Body |
| 6* | 191261 | 1 | Valve Gasket |
| 7 | 014740 | 1 | Top Weight |
| 8 | 013150 | 1 | Bottom Weight |
| 9 | 225750 | 1 | Hex HD. Bolt 1/4UNC x 1ZN PL |
| 10* | 190848 | 1 | Flinger |
| 11* | 240070 | 1 | Seal |
| 12* | 246237 | 1 | Diffuser Ring |
| 16* | 193924 | 1 | Gasket |
| 17 | 120010 | 8 | Hex HD. Bolt 3/8 UNC x 1 |
| 18 | 120000 | 8 | Hex HD. Bolt 3/8 UNC x 7/8 |
| 19 | 218700 | 1 | Motor 3HP*1PH*230V |
| 21 | 227810 | 1 | Hex Nut 1/4UNC ZN PL |
| 22* | 266006 | 1 | Sleeve |
| 23* | 240071 | 1 | Spring Holder |
| 28 | 125794 | 1 | Hex HD Bolt 3/8 UNC x 7/8 |
| 29 | 185650 | 2 | Pipe Plug 3/4 NPT |
| 30 | 432015 | 1 | Key 3/16 x 1.25 |
| 31 | 416721 | 1 | Washer |
| 32 | 175000 | 1 | Washer 1/4 |
FAQs
Can I wire the NSPHE-300 to a standard 115V outlet?
No. The Monarch NSPHE-300 is a 3 HP pump configured for 230 Volt Only single-phase power. It cannot be run on 115V.
Does the NSPHE-300 have thermal overload protection?
No. Unlike the smaller HP models, the 3 HP and 5 HP JM frame motors do not have built-in thermal overload protection. You must install external overload protection in your control box.
What is the difference between the NSPHE-300 and the NSPHE-S200?
The NSPHE-300 is a 3 HP model with a JM Frame motor and a cast iron impeller. The NSPHE-S200 is a 2 HP model with a square flange motor and a Noryl (plastic) impeller. The 300 series is built for higher durability and capacity.
What is the impeller made of in the NSPHE-300?
The NSPHE-300 features a heavy-duty Cast Gray Iron impeller, providing superior strength compared to the glass-filled Noryl impellers found in the lower horsepower models.