Monarch Industries ACE-50 Series End Suction Centrifugal Pump with C-Face Motor & Repair Parts
Monarch Industries ACE-50 (1/2 HP) End Suction Centrifugal Pump
The Monarch Industries ACE-50 (compatible with Franklin Electric FAC 50S) is a compact yet powerful 1/2 HP End Suction Centrifugal Pump. Designed for efficiency and durability, this model is the ideal solution for residential and light industrial applications requiring reliable water transfer or circulation.
Unlike plastic consumer-grade pumps, the ACE-50 is constructed with a heavy-wall cast gray iron casing and impeller. It features a 1-1/4″ NPT suction port and a 1″ NPT discharge port. Equipped with high-temperature mechanical seals standard, this pump is rated for fluid temperatures up to 200°F, making it a versatile choice for hot water circulation as well as standard irrigation tasks.
Key Features of the ACE-50
- 1/2 HP Efficiency: Powered by a reliable single-phase, 3600 RPM, C-face industry-standard motor (Frame 56J).
- Rugged Build: Cast gray iron housing ensures longevity and vibration dampening.
- High-Temperature Capable: Standard EPDM mechanical seals allow for operation with fluids up to 200°F (93°C).
- Motor Protection: A shaft flinger and large drain hole in the adapter bracket prevent moisture from damaging the motor bearings.
- User-Friendly Design: Includes accessible ports for air bleeding during priming and easy draining to prevent frost damage.
Common Applications
The ACE-50 is perfectly sized for:
- Residential Irrigation: Powering small sprinkler zones or garden watering systems.
- Water Transfer: Moving water from storage tanks or cisterns.
- Hot Water Circulation: Recirculating water in heating systems or industrial wash lines.
- General Boosting: providing steady pressure for light commercial applications.
Technical Specifications & Performance
Performance Chart (ACE-50 Specific)
Total Head in Feet vs. Capacities in U.S. GPM
| HP | Model | 30 ft | 40 ft | 50 ft | 60 ft | 70 ft |
|---|---|---|---|---|---|---|
| 1/2 | ACE-50 | 51 | 43 | 35 | 24 | 8 |
ACE-50 Model Specifications
| Model No. | Order No. | HP | Suct. NPT | Disch. NPT | Electrical Characteristics | Ship Wt. (lbs.) |
|---|---|---|---|---|---|---|
| ACE-50 | 615030 | 1/2 | 1-1/4″ | 1″ | 1/60/115/230V | 32 |
Less Power (Pump End Kit Only)
| Model | Order No. | HP | Suct. NPT | Disch. NPT | Frame | Ship Wt. |
|---|---|---|---|---|---|---|
| ACE-50LP | 615037 | 1/2 | 1-1/4″ | 1″ | *56J | 10 lbs |
Dimensions (Inches)
| Model | Suction | Discharge | CP | D | L | O | Y | Z | ZC | ZO |
|---|---|---|---|---|---|---|---|---|---|---|
| ACE-50 | 1-1/4″ | 1″ | 12.56 | 3.81 | 3.25 | 8.06 | 1.69 | 2.41 | 3.38 | 7.06 |
Repair Parts
| Ref. | Code # | Applicable Models | Qty. | Description |
|---|---|---|---|---|
| 1 | 437711 | ACE-50 (fits ACE-33/50) | 1 | Casing |
| 2 | 437760 | ACE-50 Only | 1 | Impeller |
| 4 | 437881 | ACE-50 | 1 | Electric Adapter |
| 7 | 422790 | Where applicable | 1 | Wear Ring |
| 15 | 119990 | ACE-50 | 8 | Hex. Hd. Bolt 3/8 |
| 23* | 175500 | ACE-50 | 4 | Aluminum Washer |
| 25 | 185620 | ACE-50 | 2 | Pipe Plug 1/4 NPT |
| 26* | 193900 | ACE-50 | 1 | Gasket |
| 27 | 191790 | ACE-50 | 1 | Flinger |
| 31* | 240250 | ACE-50 | 1 | Seal 5/8 Ø, Type 6 |
| 34 | 204110 | ACE-50 | 1 | Motor, 1/2 HP, 115 V |
Frequently Asked Questions
What size are the intake and discharge ports on the ACE-50?
The ACE-50 has a 1-1/4″ NPT suction (intake) and a 1″ NPT discharge port.
Is the ACE-50 pump suitable for hot water?
Yes, the ACE-50 comes standard with high-temperature mechanical seals rated for up to 200°F, making it suitable for hot water circulation.
What is the replacement motor part number for the ACE-50?
The replacement motor for the ACE-50 is part number 204110 (1/2 HP, 115V). Alternatively, you can buy the “Less Power” kit (615037) if you wish to use your own 56J frame motor.
Can I use this pump for sewage?
No, the ACE series are end suction centrifugal pumps designed for clear water or light industrial fluid transfer. They are not designed to pass solids found in sewage.