Monarch NSPHE-500 Series Sprinkler Pump & Repair Parts
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Monarch NSPHE Series Self-Priming Sprinkler Pumps
The Monarch NSPHE Series Sprinkler Pump is engineered for homeowners and professionals demanding high pressure and high capacity performance. Designed specifically for lawn and turf sprinkling, these pumps are built to last with heavy-duty cast gray iron construction. Whether you are setting up a residential irrigation system or require a reliable standby pump for fire protection, the NSPHE series (including the popular NSPHE-500 model) delivers consistent flow and durability.
These pumps feature a user-friendly design with a built-in check valve that facilitates easy priming and prevents backflow or siphoning. With a range of horsepower options from 3/4 HP to 5 HP, the NSPHE series ensures efficient operation with minimal maintenance required due to its self-lubricating mechanical seals.
Key Features
- Heavy-Duty Construction: Features a rugged cast gray iron casing and large housing to assure dependable self-priming action.
- Built-in Check Valve: The suction check valve facilitates fast priming and prevents back flow or siphoning.
- High Efficiency Impeller: Noryl glass-filled impeller provides a smooth surface for efficient operation and high corrosion resistance. The 3 & 5 HP units feature cast gray iron impellers.
- Maintenance-Free Seal: Equipped with a mechanical, self-lubricating, and self-adjusting seal that requires no maintenance.
- Improved Efficiency: A cast gray iron diffuser is built-in on all models to maximize pump efficiency.
- CSA Approved Motors:
- 1, 1-1/2, and 2 HP single-phase units utilize square flange jet pump motors with a service factor higher than NEMA standards and thermal overload protection.
- 3 HP and 5 HP motors are JM frame without thermal overload protection.
Applications
The NSPHE Series is versatile and suited for various water transfer and pressure boosting applications:
- Lawn and Turf Sprinkling: Ideal for residential and commercial irrigation systems requiring high pressure.
- Fire Protection: Can be utilized as a reliable standby pump for fire safety systems.
- Water Transfer: Excellent for moving large volumes of water efficiently.
Technical Specifications & Dimensions
The following table details the physical dimensions for the NSPHE series, ranging from the S100 to the NSPHE-500.
| Model | Suction NPT | Discharge NPT | CP | D | DC | E | F | G | H | L | O | S | Y | Z | ZO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NSPHE-S100 | 1½” | 1½” | 18.31 | 5.62 | – | 2.75 | 3.00 | 6.00 | 0.44 | 6.31 | 11.87 | 4.12 | 5.56 | 2.50 | 8.12 |
| NSPHE-S150 | 1½” | 1½” | 18.31 | 5.62 | – | 2.75 | 3.00 | 6.00 | 0.44 | 6.31 | 11.87 | 4.12 | 5.56 | 2.50 | 8.12 |
| NSPHE-S200 | 2″ | 2″ | 20.31 | 6.00 | – | 2.75 | 3.00 | – | 0.44 | 7.13 | 14.38 | 5.75 | 6.38 | 3.00 | 9.75 |
| NSPHE-300 | 2″ | 2″ | 23.25 | 4.50 | 5.00 | 3.75 | 5.00 | 4.00 | 0.44 | 14.75 | 13.25 | 6.00 | 6.38 | 3.00 | 9.75 |
| NSPHE-300-3 | 2″ | 2″ | 23.75 | 3.50 | 5.56 | 2.75 | 5.00 | 4.00 | 0.38 | 14.50 | 12.00 | 6.00 | 6.38 | 3.00 | 9.75 |
| NSPHE-500 | 2½” | 2″ | 23.38 | 4.50 | 5.56 | 3.75 | 2.75 | 4.00 | 0.40 | 15.12 | 13.88 | 5.75 | 6.38 | 3.00 | 9.75 |
| NSPHE-500-3 | 2½” | 2″ | 23.38 | 4.50 | 5.56 | 3.75 | 2.25 | 4.00 | 0.40 | 15.12 | 13.88 | 5.75 | 6.38 | 3.00 | 9.75 |
Performance Data
Capacities listed in U.S. GPM based on discharge pressure in PSI at 5 ft. Lift.
| Model No. | HP | 10 PSI | 20 PSI | 30 PSI | 40 PSI | 50 PSI | 60 PSI | Max. PSI |
|---|---|---|---|---|---|---|---|---|
| NSPHE-S100 | 1 | 54 | 44 | 32 | 17 | – | – | 45 |
| NSPHE-S150 | 1½ | 62 | 52 | 40 | 27 | – | – | 49 |
| NSPHE-S200 | 2 | 92 | 82 | 64 | 45 | 17 | – | 54 |
| NSPHE-300 | 3 | 124 | 110 | 95 | 77 | 54 | – | 59 |
| NSPHE-500 | 5 | 170 | 165 | 146 | 128 | 109 | 85 | 74 |
NSPHE Series – Electric Motor Driven
| Model No. | Order No. | HP | SF | Suct. NPT | Disch. NPT | Ship Wt. (lbs.) |
|---|---|---|---|---|---|---|
| NSPHE-S100 | 614436 | 1 | 1.65 | 1½” | 1½” | 56 |
| NSPHE-S150 | 614437 | 1½ | 1.47 | 1½” | 1½” | 60 |
| NSPHE-S200 | 614438 | 2 | 1.30 | 2″ | 2″ | 94 |
| NSPHE-300 | 614404 | 3 | 1.15 | 2″ | 2″ | 134 |
| NSPHE-300-3 | 614405 | 3 | 1.15 | 2″ | 2″ | 110 |
| NSPHE-500 | 614406 | 5 | 1.15 | 2½” | 2″ | 140 |
| NSPHE-500-3 | 614407 | 5 | 1.15 | 2½” | 2″ | 130 |
NSPHE Series – Less Power (Kits)
| Model No. | Order No. | Frame Size | Suct. NPT | Disch. NPT | Ship Wt. (lbs.) |
|---|---|---|---|---|---|
| NSPHE-S100LP | 614419 | 56Y | 1½” | 1½” | 25 |
| NSPHE-S150LP | 614428 | 56Y | 1½” | 1½” | 25 |
| NSPHE-S200LP | 614427 | 56Y | 2″ | 2″ | 55 |
| NSPHE-300LP | 614443 | 145JM/*184JM | 2″ | 2″ | 60 |
| NSPHE-500LP | 614446 | 184JM | 2½” | 2″ | 60 |
Repair Parts List – Models S75 to S300
Applicable Models: a) NSPHE-S75 | b) NSPHE-S100 | c) NSPHE-S150 | d) NSPHE-S200 | e) NSPHE-S300
| Ref. | Code | a | b | c | d | e | Description |
|---|---|---|---|---|---|---|---|
| 1 | 433210 | 1 | 1 | 1 | Casing – blue | ||
| 1 | 433109 | 1 | 1 | Casing | |||
| 2 | 433137 | 1 | 1 | 1 | Diffuser | ||
| 2 | 433138 | 1 | Diffuser | ||||
| 2 | 433197 | 1 | Diffuser | ||||
| 3 | 433107 | 1 | Impeller | ||||
| 3 | 433125 | 1 | Impeller | ||||
| 3 | 433126 | 1 | Impeller | ||||
| 3 | 433127 | 1 | Impeller | ||||
| 3 | 433132 | 1 | Impeller | ||||
| 4 | 433159 | 1 | 1 | 1 | Seal Plate-Sq.Fl. | ||
| 4 | 433162 | 1 | 1 | Seal Plate-Sq.Fl. | |||
| 5 | 400111 | 1 | 1 | 1 | Valve Body | ||
| 5 | 414730 | 1 | 1 | Valve Body | |||
| 6 | 190645 | 1 | 1 | 1 | Valve Gasket | ||
| 6* | 191260 | 1 | 1 | Valve Gasket | |||
| 7 | 400079 | 1 | 1 | 1 | Top Weight | ||
| 7 | 014740 | 1 | 1 | Top Weight | |||
| 8 | 174430 | 1 | 1 | 1 | Bottom Weight | ||
| 8 | 013150 | 1 | 1 | Bottom Weight | |||
| 9 | 145860 | 1 | 1 | 1 | Screw | ||
| 9 | 225750 | 1 | 1 | Bolt 1/4UNC x 1 | |||
| 10 | 191790 | 1 | 1 | 1 | 1 | 1 | Flinger |
| 11* | 240104 | 1 | 1 | 1 | 1 | 1 | Seal |
| 12* | 246238 | 1 | 1 | 1 | 1 | 1 | Diffuser Ring |
| 15 | 185620 | 1 | 1 | 1 | Pipe Plug 1/4 NPT | ||
| 15 | 185650 | 1 | 1 | Pipe Plug 3/4 NPT | |||
| 16 | 193923 | 1 | 1 | 1 | Gasket | ||
| 16* | 193924 | 1 | 1 | Gasket | |||
| 17 | 120010 | 4 | 4 | 4 | 4 | 4 | Hex HD. Bolt 3/8 UNC x 1 |
| 18 | 119990 | 10 | 10 | 10 | 10 | 10 | Hex HD. Bolt 3/8 UNC x 7/8 |
| 19 | 204125 | 1 | Motor 3/4HP*1PH*115/230V. Sq.Fl. | ||||
| 19 | 204154 | 1 | Motor 1 HP*1PH*115/230V.Sq.Fl. | ||||
| 19 | 204179 | 1 | Motor 1-1/2HP*1PH*115/230V. Sq.Fl. | ||||
| 19 | 204186 | 1 | Motor 2HP*1PH* 230VSq.Fl. | ||||
| 19 | 204177 | 1 | Motor 3HP*1PH*230V.Sq.Fl. | ||||
| 20 | 120030 | 4 | 4 | 4 | Bolt 3/8 UNC x 1-1/2 | ||
| 21 | 227810 | 1 | 1 | Nut 1/4 UNC | |||
| 22 | 176230 | 10 | 6 | 6 | 6 | 6 | Spring Washer 3/8 |
| 23 | 227830 | 4 | 4 | 4 | Nut 3/8 UNC | ||
| 24 | 164631 | 4 | 4 | Stud 3/8 UNC x 1-1/2 | |||
| 25 | 140530 | 4 | 4 | 4 | Cap Screw 3/8 UNC x 1/2 | ||
| 28 | 433161 | 1 | 1 | 1 | 1 | 1 | Base Plate |
| 29 | 185650 | 1 | 1 | 1 | 1 | 1 | Pipe Plug 3/4 NPT |
Repair Parts List – Models 300B to 500
Applicable Models: a) 300B | b) 300B-3 | c) 500 | d) 500-3
| Ref. | Code | a | b | c | d | Description |
|---|---|---|---|---|---|---|
| 1 | 433109 | 1 | 1 | 1 | 1 | Casing |
| 2* | 433197 | 1 | 1 | 1 | 1 | Diffuser |
| 3* | 433196 | 1 | 1 | Impeller | ||
| 3* | 433140 | 1 | 1 | Impeller | ||
| 4 | 433141 | 1 | 1 | 1 | 1 | Adapter |
| 5 | 414730 | 1 | 1 | Valve Body | ||
| 5 | 414731 | 1 | 1 | Valve Body | ||
| 6* | 191261 | 1 | 1 | 1 | 1 | Valve Gasket |
| 7 | 014740 | 1 | 1 | 1 | 1 | Top Weight |
| 8 | 013150 | 1 | 1 | 1 | 1 | Bottom Weight |
| 9 | 225750 | 1 | 1 | 1 | 1 | Hex HD. Bolt 1/4UNC x 1ZN PL |
| 10* | 190848 | 1 | 1 | 1 | Flinger | |
| 10* | 194140 | 1 | Flinger | |||
| 11* | 240070 | 1 | 1 | 1 | 1 | Seal |
| 12* | 246237 | 1 | 1 | 1 | 1 | Diffuser Ring |
| 16* | 193924 | 1 | 1 | 1 | 1 | Gasket |
| 17 | 120010 | 8 | 8 | 8 | 8 | Hex HD. Bolt 3/8 UNC x 1 |
| 18 | 120000 | 8 | 8 | 8 | 8 | Hex HD. Bolt 3/8 UNC x 7/8 |
| 19 | 218700 | 1 | Motor 3HP*1PH*230V | |||
| 19 | 218702 | 1 | Motor 3HP*3PH*230/460V | |||
| 19 | 217696 | 1 | Motor 3HP*3PH*575V *TEFC* | |||
| 19 | 218705 | 1 | Motor 5HP*1PH*230V | |||
| 19 | 218707 | 1 | Motor 5HP*3PH*230/460V | |||
| 19 | 218708 | 1 | Motor 5HP*3PH*230/460V*TEFC* | |||
| 21 | 227810 | 1 | 1 | 1 | 1 | Hex Nut 1/4UNC ZN PL |
| 22* | 266006 | 1 | 1 | 1 | 1 | Sleeve |
| 23* | 240071 | 1 | 1 | 1 | 1 | Spring Holder |
| 28 | 125794 | 1 | Hex HD Bolt 3/8 UNC x 7/8 | |||
| 28 | 226200 | 1 | Hex HD. Bolt 3/8UNC x7/8 ZN PL | |||
| 28 | 125794 | 1 | 1 | Hex HD. Bolt 3/8 UNC x 7/8 SST | ||
| 29 | 185650 | 2 | 2 | 2 | 2 | Pipe Plug 3/4 NPT |
| 30 | 432020 | 1 | 1 | Key 3/16 x 1.375 | ||
| 30 | 432015 | 1 | 1 | Key 3/16 x 1.25 | ||
| 31 | 416720 | 1 | 1 | Washer | ||
| 31 | 416721 | 1 | 1 | Washer | ||
| 32 | 175000 | 1 | 1 | 1 | 1 | Washer 1/4 |
FAQs
What is the primary use for the Monarch NSPHE Series pumps?
The Monarch NSPHE Series pumps are designed for high-pressure applications such as lawn and turf sprinkling. They are also suitable for use as standby pumps for fire protection systems due to their high capacity.
Are Monarch NSPHE pumps self-priming?
Yes, these pumps are self-priming. They feature a large cast iron housing and a built-in suction check valve that facilitates priming and prevents backflow or siphoning.
What maintenance does the NSPHE series seal require?
The mechanical seal in the NSPHE series is self-lubricating and self-adjusting for wear, meaning it requires no regular maintenance.
What is the difference between the 2HP and 3HP motors?
Motors up to 2 HP are single-phase, capacitor start, square flange jet pump motors with thermal overload protection. The 3 HP and 5 HP motors are JM frame and generally do not include thermal overload protection (unless specified otherwise for specific 3-phase models).