Monarch Industries EPE Series and EPT Series End Suction Centrifugal Pumps JM Frame & JP Frame Repair Parts

Monarch Industries EP Series: Heavy-Duty End Suction Centrifugal Pumps

The Monarch Industries EP Series represents the pinnacle of durability and hydraulic efficiency in the world of end suction centrifugal pumps. Engineered for rigorous irrigation and industrial applications, the EP Series (including EPE Series electric motor-driven models and EPT Series frame-mount models) is built to withstand the toughest operating conditions while delivering smooth, reliable performance.

Constructed with a rugged cast iron design, these pumps are versatile solutions for markets ranging from commercial water systems to marine and agriculture. Whether you require a close-coupled electric design or a heavy-duty frame mount for belt drives, the EP Series allows you to tailor the pump configuration to your exact system requirements.

Key Features

• Ductile Iron Casing: Features reinforcing ribs for higher working pressures and superior resistance to water hammer compared to standard cast iron.
• Vacuum Cast Bronze Impeller: Precision-engineered for smooth flow passages, improved efficiency, and high performance. Cast iron impellers are also available as an option.
• Versatile Discharge: The discharge flange can be rotated to eight different positions, allowing for flexible piping configurations.
• Premium Seals: Available with packing or mechanical seals (Single, Double, or Tungsten Carbide). Standard seals feature stainless steel springs and retainers.
• Stainless Steel Shaft Sleeve: Fitted with an O-ring seal to provide maximum protection against shaft corrosion.
• Replaceable Wear Rings: Included in all pumps to prolong casing life and maintain close tolerances for sustained high efficiency.
• Dynamic Balancing: All impellers are dynamically balanced, with hydraulic balancing included on larger models to reduce vibration and bearing load.
• Motor Compatibility:
  • Electric Motor Driven (EPE): Close-coupled JP motors (ODP or TEFC) for a compact footprint. JM motors available up to 15 HP.
  • Frame Mount (EPT): Heavy-duty bearing frame suitable for belt or coupling drives, with bearings sized for extended service life.

Applications

• Irrigation Systems: High-flow capabilities perfect for agricultural sprinkler and flood irrigation.
• Industrial Water Supply: Reliable circulation for manufacturing and processing plants.
• Sump and Sewage: Capable of handling fluids in municipal and commercial waste management.
• Marine & Cooling: Efficient heat exchanger circulation and raw water washdown.
• Lawn & Sprinkler: Commercial landscaping and turf management water supply.

Technical Specifications & Part Data

Below are the detailed specification tables recreated from the official product data.

Pump Model Nomenclature

EP (10K0) Series – 1½” x 1″ | 3600 RPM & 3450 RPM

EP (12K1) Series – 1½” x 1¼” | 3450 RPM

EP (20K2) Series – 3″ x 2″ | 1725 RPM & 3450 RPM

EP (25K3) Series – 3″ x 2½” | 1725 RPM & 3450 RPM

EP Series – Model 12M1 (2″ x 1¼” Size)

• Max Solids: 1/4″
• Max Working Pressure (MWP): 250 PSI

EP Series – Model 15M2 (2″ x 1½” Size)

• Max Solids: 1/4″
• Max Working Pressure (MWP): 250 PSI

EP Series – Model 20M3 (2½” x 2″ Size)

• Max Solids: 5/16″
• Max Working Pressure (MWP): 250 PSI

EP Series – Model 30M4 (4″ x 3″ Size)

• Max Solids: 3/8″
• Max Working Pressure (MWP): 250 PSI

EP Series – Model 30M5 (4″ x 3″ Size)

• Max Solids: 3/8″
• Max Working Pressure (MWP): 250 PSI

“K & M” Group Casing Sub-Assembly

“K” Group Impeller Sub-Assembly

Impellers, 7/8″ Bore

Impellers, 1-1/4″ Bore

Wear Rings

“M” Group Impeller Sub-Assembly

Impellers, 7/8″ Bore

Impellers, 1-1/4″ Bore

Wear Rings

“K & M” Group Power Adapter Sub-Assembly

Seal Kits Sub-Assembly

Packing Kit Sub-Assembly

Power Frame Sub-Assembly (Transmission Head)

Power Frame Sub-Assembly (Electric Motor JM Frame)

1800 RPM JM Motors (ODP & TEFC)

3600 RPM JM Motors (ODP & TEFC)

FAQs