Monarch Industries ACE-S200SD Series Centrifugal Pump Square Flange & Repair Parts
Monarch Industries ACE-S Series Square Flange Centrifugal Pumps
The Monarch Industries ACE-S Series offers 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 (ACE-S50SD – ACE-S200SD), these pumps are engineered for high efficiency and smooth operation in water systems, lawn sprinkling, and industrial applications.
Unlike the standard ACE series, the ACE-S Series utilizes an enclosed glass-filled Noryl impeller reinforced with a stainless steel hub. This design choice ensures a smooth surface for high efficiency and 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.