Monarch Industries ACE-S150SD Centrifugal Pump Square Flange & Repair Parts
Monarch Industries ACE-S150SD (1-1/2 HP) Square Flange Centrifugal Pump
The Monarch Industries ACE-S150SD is a high-performance 1-1/2 HP End Suction Centrifugal Pump designed for users who demand reliability and efficiency. Part of the renowned ACE-S Series, this model is distinguished by its Square Flange motor mounting, making it a versatile and easily serviceable unit for residential and commercial applications.
Engineered for superior booster and lift applications, the ACE-S150SD features a heavy-duty cast gray iron casing and a precision-molded glass-filled Noryl impeller. This impeller is reinforced with a stainless steel hub, ensuring a smooth surface for maximum hydraulic efficiency while resisting corrosion. With a flow rate capable of handling up to 67 GPM and high-head pressure capabilities, this pump is the ideal solution for demanding lawn sprinkling systems and water transfer tasks.
Key Features of the ACE-S150SD
- 1-1/2 HP Powerhouse: Driven by a 3600 RPM, single-phase, Square Flange motor with built-in thermal overload protection.
- Premium Impeller: The enclosed glass-filled Noryl impeller offers superior efficiency compared to rough cast iron, reducing motor strain and energy consumption.
- Square Flange Design: Utilizes industry-standard square flange motors with stainless steel shafts (or replaceable sleeves) for easy maintenance and replacement.
- Durable Seals: Equipped with a standard Buna/Carbon-Ceramic mechanical seal for leak-free operation.
- Bearing Protection: Features a shaft flinger and a large drain hole in the adapter bracket to prevent moisture from entering the motor bearings.
- Frost Protection: Includes accessible drain ports to prevent casing damage during freezing weather.
Common Applications
The ACE-S150SD is specifically tuned for high-demand water systems:
- Irrigation Boosting: Provides high pressure for multi-zone lawn sprinkler systems.
- Water Supply: Ideal for drawing water from cisterns or shallow wells.
- Liquid Transfer: Efficient movement of clear water in industrial or agricultural settings.
- De-watering: Effective for sump and general clear water removal.
Technical Specifications & Performance
Performance Chart (ACE-S150SD Specific)
| HP | Model | 20 ft | 30 ft | 40 ft | 50 ft | 60 ft | 70 ft | 80 ft | 100 ft |
|---|---|---|---|---|---|---|---|---|---|
| 1-1/2 | ACE-S150SD | 67 | 65 | 63 | 59 | 54 | 49 | 39 | 24 |
ACE-S150SD Model Specifications
| Model No. | Order No. | HP | Suct. NPT | Disch. NPT | Electrical Characteristics | Ship Wt. (lbs.) |
|---|---|---|---|---|---|---|
| ACE-S150SD | 614564 | 1-1/2 | 1-1/4″ | 1″ | 1/60/115/230V | 42 |
Dimensions (Inches)
| Model | Suction | Discharge | CP | D | E | F | H | L | M | N | OP | X | Y |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ACE-S150SD | 1-1/4″ | 1″ | 15.90 | 4.00 | 4.88 | 3.00 | 7/16×15/16 | 5.53 | 3.69 | 4.00 | 8.90 | 4.90 | 2.63 |
Repair Parts
| Ref. | Code # | Qty. | Description |
|---|---|---|---|
| 1 | 437865 | 1 | Casing (Specific to 1.5 & 2 HP models) |
| 2 | 433126 | 1 | Impeller (Glass Filled Noryl) |
| 3 | 437809 | 1 | Seal Plate |
| 4 | 438245 | 1 | Bracket |
| 5 | 246801 | 1 | End Cap |
| 17 | 227830 | 4 | Nut Hex. 3/8 UNC Zn. Pl. |
| 18 | 227830 | 4 | Nut Hex. 3/8″ Zn. Pl. |
| 23 | 176230 | 4 | Spring Washer 3/8″ Zn Pl. |
| 25 | 185620 | 2 | Pipe Plug 1/4″ NPT Zinc Plated |
| 26* | 193915 | 1 | Gasket (Specific to 1.5 & 2 HP models) |
| 27* | 191790 | 1 | Flinger |
| 31* | 240250 | 1 | Mech. Seal MS-25 |
| 34 | 204179 | 1 | Motor 1-1/2HP 1Ø 115/230V |
Frequently Asked Questions
What is the suction size of the ACE-S150SD?
The ACE-S150SD has a 1-1/4″ NPT suction port and a 1″ NPT discharge port. It is important to note that the 2 HP model (ACE-S200SD) jumps to a larger suction size, but the 1-1/2 HP remains at 1-1/4″.
Is the impeller on the ACE-S150SD compatible with the ACE-S200SD?
No. While they share the same casing and seal plate, the impellers are different. The ACE-S150SD uses impeller #433126, while the ACE-S200SD uses #433127.
What type of motor frame does this pump use?
The ACE-S150SD uses a Square Flange motor. This is different from the standard ACE series which uses C-Face motors.
Which gasket kit do I need for the ACE-S150SD?
You need Gasket part #193915. Be careful not to order #193914, as that is for the smaller horsepower units (1/2 HP – 1 HP).