Monarch NSPHE-S150 Series Sprinkler Pump & Repair Parts

Monarch NSPHE-S150 Series Sprinkler Pump with 1.5 HP Single-Phase Motor, Cast Gray Iron Casing, Noryl Glass-Filled Impeller, and Built-In Suction Check Valve
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Monarch NSPHE-S150 Series Sprinkler Pump and Repair Parts

Monarch NSPHE-S150 Series Sprinkler Pump is a versatile mid-range sprinkler pump designed to provide the perfect balance of pressure and volume for residential irrigation systems. Powered by a durable 1-1/2 HP single-phase motor, this pump is engineered to draw water efficiently from lakes, ponds, or cisterns to keep lawns and turf green and healthy throughout the season.

The Monarch NSPHE-S150 Series Sprinkler Pump distinguishes itself with a heavy-duty cast gray iron casing and a precision-molded Noryl glass-filled impeller. This impeller design ensures a smooth surface for water flow, significantly increasing efficiency while resisting corrosion and abrasion. Unlike larger industrial models, the S150 features a square flange motor equipped with thermal overload protection, providing reliable safeguarding against motor burnout during continuous operation.

Installation and maintenance are simplified with the Monarch NSPHE-S150. It features 1-1/2-inch NPT suction and discharge ports and a built-in suction check valve that holds the prime, preventing backflow and eliminating the need for an external foot valve in many setups.

Key Features

  • 1.5 HP Square Flange Motor: reliable single-phase motor (115/230 Volt) with a high service factor (1.47 SF).
  • Thermal Overload Protection: Automatically shuts down the motor if internal temperatures rise too high, protecting your investment.
  • Noryl Glass-Filled Impeller: Lightweight yet durable, offering high efficiency and resistance to rust and scale build-up.
  • Self-Priming Capability: The large pump housing and integral check valve ensure fast priming and consistent performance.
  • Maintenance-Free Seal: Features a mechanical, self-lubricating seal that self-adjusts for wear.
  • Cast Iron Construction: Heavy-duty blue cast iron housing provides structural integrity and longevity.

Applications

  • Residential Lawn Sprinkling: Ideal for medium-sized irrigation zones requiring up to 49 PSI.
  • Garden Irrigation: Provides steady pressure for garden hoses and drip systems.
  • Water Transfer: Excellent for filling tanks or moving water between storage containers.

Technical Specifications

Model Suction Discharge CP D E F G H L O S Y Z ZO
NSPHE-S150 1½” NPT 1½” NPT 18.31″ 5.62″ 2.75″ 3.00″ 6.00″ 0.44″ 6.31″ 11.87″ 4.12″ 5.56″ 2.50″ 8.12″

 

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 Max. PSI
NSPHE-S150 1½ 62 52 40 27 49

Electric Motor Specifications

Model No. Order No. HP SF Voltage Phase Suct./Disch. Ship Wt.
NSPHE-S150 614437 1½ 1.47 115/230V 1 1½” x 1½” 60 lbs.

 

Repair Parts

Monarch NSPHE-S150 Series Sprinkler Pump showing cast gray iron casing, Noryl glass-filled impeller, 1.5 inch NPT ports, built-in suction check valve, and thermal overload protected motor assembly

Ref. Code # Qty (S150) Description
1 433210 1 Casing – Blue
2 433137 1 Diffuser
3 433126 1 Impeller (Noryl)
4 433159 1 Seal Plate-Sq.Fl.
5 400111 1 Valve Body
6 190645 1 Valve Gasket
7 400079 1 Top Weight
8 174430 1 Bottom Weight
9 145860 1 Screw
10 191790 1 Flinger
11* 240104 1 Seal
12* 246238 1 Diffuser Ring
15 185620 1 Pipe Plug 1/4 NPT
16 193923 1 Gasket
17 120010 4 Hex HD. Bolt 3/8 UNC x 1
18 119990 10 Hex HD. Bolt 3/8 UNC x 7/8
19 204179 1 Motor 1-1/2HP*1PH*115/230V. Sq.Fl.
20 120030 4 Bolt 3/8 UNC x 1-1/2
22 176230 6 Spring Washer 3/8
23 227830 4 Nut 3/8 UNC
25 140530 4 Cap Screw 3/8 UNC x 1/2
28 433161 1 Base Plate
29 185650 1 Pipe Plug 3/4 NPT

 

FAQs

What is the inlet and outlet size of the NSPHE-S150?

The Monarch NSPHE-S150 features 1½” (1.5 inch) NPT threaded connections for both the suction inlet and the discharge outlet.

Does the NSPHE-S150 come with a power cord?

No, this pump does not typically come with a pre-wired cord. It features a dual-voltage motor (115/230V) that must be wired according to your specific power supply and local electrical codes.

Is the impeller on the NSPHE-S150 metal or plastic?

The NSPHE-S150 utilizes a Noryl glass-filled impeller. This high-grade thermoplastic is lightweight, highly efficient, and resistant to corrosion, unlike cast iron impellers found on the larger 3HP+ models.

What voltage should I use for the 1.5 HP motor?

The motor is dual voltage (115/230V). While it can run on 115V, it is highly recommended to wire a 1.5 HP pump for 230V to reduce amperage draw, prevent voltage drop, and extend the life of the motor.

Send us your model number and we will confirm fit, price, and availability.

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