Monarch Industries ACE-S200SD Series Centrifugal Pump Square Flange & Repair Parts
Monarch Industries ACE-S Series Square Flange Centrifugal Pumps
Monarch Industries ACE-S200SD Series Centrifugal Pump Square Flange represents a robust line of electric motor-driven end suction centrifugal pumps designed specifically with square flange motors. Ranging from 1/2 HP to 2 HP across the ACE-S50SD through ACE-S200SD models, these pumps are engineered for high efficiency and smooth operation in water systems, lawn sprinkling, and industrial applications.
Unlike the standard ACE Series, the Monarch Industries ACE-S200SD Series Centrifugal Pump Square Flange utilizes an enclosed glass-filled Noryl impeller reinforced with a stainless steel hub. This design ensures a smooth surface for high efficiency and strong resistance to corrosion. Encased in a thick-wall cast gray iron casing, these pumps are built to withstand the rigors of continuous booster and lift applications.
Key Features and Benefits
- Square Flange Power: Powered by 3600 RPM, single-phase, square flange motors. Motors up to 2 HP feature stainless steel shafts or replaceable sleeves and built-in thermal overload protection.
- High-Efficiency Impeller: Features an enclosed, glass-filled Noryl impeller with a reinforced stainless steel hub, providing superior hydraulic efficiency compared to rougher cast metals.
- Durable Casing: Constructed from thick-wall cast gray iron for maximum durability and vibration reduction.
- Advanced Sealing: Equipped with a standard Buna with carbon-ceramic mechanical seal, ensuring leak-free operation.
- Moisture Protection: A shaft flinger combined with a large drain hole in the adapter bracket actively prevents moisture from reaching and damaging motor bearings.
- Convenient Maintenance: Includes ports for air bleeding during priming and draining to prevent frost damage during winter.
Common Applications
The ACE-S Series (Square Flange) is versatile and ideal for:
- Irrigation Boosting: providing steady pressure for lawn sprinkler systems.
- Water Transfer: Efficiently moving water for lift applications.
- Sump and Sewage: Capable of handling clear water removal tasks (Note: Not for solids).
- Industrial Use: Reliable performance for general water supply duties.
Technical Specifications & Performance
Performance Chart (Total Head in Feet vs. Capacities in U.S. GPM)
| HP | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 100 | 120 |
|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 46 | 38 | 32 | 24 | 15 | – | – | – | – |
| 3/4 | 55 | 52 | 47 | 38 | 32 | 25 | 15 | – | – |
| 1 | 60 | 57 | 54 | 49 | 44 | 39 | 32 | 12 | – |
| 1 1/2 | 67 | 65 | 63 | 59 | 54 | 49 | 39 | 24 | – |
| 2 | 104 | 97 | 92 | 88 | 81 | 75 | 66 | 48 | 15 |
ACE-S Series – Electric Motor Driven Specifications
| Model No. | Order No. | HP | Suct. NPT | Disch. NPT | Electrical Characteristics | Ship Wt. (lbs.) | Description |
|---|---|---|---|---|---|---|---|
| ACE-S50SD | 614561 | 1/2 | 1-1/4″ | 1″ | 1/60/115/230V | 31 | Single phase motors have built-in thermal overload protection and higher than NEMA service factor up to 2 HP only. All have stainless steel shafts or a replaceable sleeve. |
| ACE-S75SD | 614562 | 3/4 | 1-1/4″ | 1″ | 1/60/115/230V | 32 | |
| ACE-S100SD | 614563 | 1 | 1-1/4″ | 1″ | 1/60/115/230V | 37 | |
| ACE-S150SD | 614564 | 1-1/2 | 1-1/4″ | 1″ | 1/60/115/230V | 42 | |
| ACE-S200SD | 614565 | 2 | 1-1/2″ | 1-1/4″ | 1/60/115/230V | 46 |
Dimensions and Mounting Information (Inches)
| Model | Suct. NPT | Disch. NPT | CP | D | E | F | H (4 Slots) | L | M | N | OP | X | Y |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ACE-S50SD | 1-1/4 | 1 | 13.75 | 4.00 | 4.88 | 3.00 | 7/16×15/16 | 5.53 | 3.69 | 4.00 | 8.90 | 4.90 | 2.63 |
| ACE-S75SD | 14.07 | ||||||||||||
| ACE-S100SD | 15.57 | ||||||||||||
| ACE-S150SD | 15.90 | ||||||||||||
| ACE-S200SD | 1-1/2 | 1-1/4 | 15.82 | 4.46 | 4.88 | 3.00 | – | 5.88 | 4.12 | 4.72 | 10.78 | 6.31 | 2.88 |
Repair Parts
| Ref.# | Code # | S33SD | S50SD | S75SD | S100SD | S150SD | S200SD | Description |
|---|---|---|---|---|---|---|---|---|
| 1 | 437842 | 1 | 1 | 1 | 1 | Casing | ||
| 1 | 437865 | 1 | 1 | Casing | ||||
| 2 | 433105 | 1 | Impeller | |||||
| 2 | 433106 | 1 | Impeller | |||||
| 2 | 433107 | 1 | Impeller | |||||
| 2 | 433125 | 1 | Impeller | |||||
| 2 | 433126 | 1 | Impeller | |||||
| 2 | 433127 | 1 | Impeller | |||||
| 3 | 437890 | 1 | 1 | 1 | 1 | Seal Plate | ||
| 3 | 437809 | 1 | 1 | Seal Plate | ||||
| 4 | 438245 | 1 | 1 | 1 | 1 | 1 | 1 | Bracket |
| 5 | 246801 | 1 | 1 | 1 | 1 | 1 | 1 | End Cap |
| 15 | 164651 | 2 | 2 | 2 | 2 | 4 | Stud 3/8″ x 2″ | |
| 16 | 164641 | 2 | 2 | 2 | 2 | Stud 3/8″ x 1 3/4″ Zn Pl. | ||
| 17 | 227830 | 4 | 4 | 4 | 4 | 4 | 4 | Nut Hex. 3/8 UNC Zn. Pl. |
| 18 | 227830 | 4 | 4 | 4 | 4 | 4 | 4 | Nut Hex. 3/8″ Zn. Pl. |
| 23 | 176230 | 4 | 4 | 4 | 4 | 4 | 4 | Spring Washer 3/8″ Zn Pl. |
| 25 | 185620 | 2 | 2 | 2 | 2 | 2 | 2 | Pipe Plug 1/4″ NPT Zinc Plated |
| 26* | 193914 | 1 | 1 | 1 | 1 | Gasket | ||
| 26* | 193915 | 1 | 1 | Gasket | ||||
| 27* | 191790 | 1 | 1 | 1 | 1 | 1 | 1 | Flinger |
| 31* | 240250 | 1 | 1 | 1 | 1 | 1 | 1 | Mech. Seal MS-25 |
| 34 | 204071 | 1 | Motor 1/3HP 1Ø 115V | |||||
| 34 | 204073 | 1 | Motor 1/2HP 1Ø 115/230V | |||||
| 34 | 204125 | 1 | Motor 3/4HP 1Ø 115/230V | |||||
| 34 | 204154 | 1 | Motor 1HP 1Ø 115/230V | |||||
| 34 | 204179 | 1 | Motor 1-1/2HP 1Ø 115/230V | |||||
| 34 | 204186 | 1 | Motor 2HP 1Ø 230V |
Frequently Asked Questions
What is the difference between the ACE and ACE-S Series?
The main differences are the motor flange and the impeller material. The ACE-S series uses Square Flange motors and Glass-Filled Noryl impellers, while the standard ACE series often uses C-Face motors and cast iron impellers.
Are the impellers on the ACE-S Series plastic?
They are made of enclosed glass-filled Noryl, which is a high-grade engineered thermoplastic known for smooth surfaces and high efficiency. They are reinforced with a stainless steel hub for added durability.
Can I use this pump for hot water?
While the ACE-S series uses durable Buna/Carbon-Ceramic seals, it is primarily designed for irrigation and booster applications. For dedicated hot water circulation up to 200°F, the standard ACE series with C-Face motors and cast iron impellers is typically recommended.
What parts should I keep in stock for repairs?
Suggested parts to stock include the Gasket, Mechanical Seal, and the Flinger. These are the most common wear items.
Send us your model number and we will confirm fit, price, and availability.