CH&E 5500 Series Aluminum 3″ Diaphragm Pump & Repair Parts
The CH&E 5500 Series Aluminum 3 Inch Diaphragm Pump is a self-priming, lightweight pump built for reliable fluid transfer across construction, mining, municipal, and industrial job sites. Its aluminum housing makes it significantly easier to transport and reposition between work areas compared to cast iron alternatives, without compromising core performance or durability in standard pumping conditions.
The 5500 Series handles clean water, muddy water, light slurries, and solids-laden fluids efficiently. It is designed to run dry indefinitely without internal damage and automatically re-primes when seepage reappears, making it an ideal choice for seepage dewatering, septic tank cleaning, industrial waste pumping, marine tank applications, small wellpoint systems, and dewatering in sandy, muddy, or debris-filled water.
The CH&E 5500 Series is also compatible with Magnum Power Products Mud Hog diaphragm pump configurations, including the MCP 5515, MCP 5537, and MCP 5538 series. Ken’s Distributing Company stocks the complete range of genuine CH&E 5500 Series aluminum repair parts. Contact Kendisco for part availability, current pricing, and technical support.
Key Features of the CH&E 5500 Series Aluminum 3 inch Diaphragm Pump
- Lightweight aluminum housing for easy transport and field repositioning
- 3 inch inlet and outlet ports for high-volume fluid transfer
- Self-priming diaphragm design for fast, reliable startup without manual priming
- Runs dry indefinitely without damage to internal components
- Automatically re-primes when seepage reappears
- Handles clean water, muddy water, slurries, and solids-laden fluids
- Multiple diaphragm material options for broad fluid and chemical compatibility
- Compatible with gas engine, electric motor, and hydraulic motor drive configurations
- Simple, low-maintenance design engineered to reduce operational downtime
Applications and Industries Served
The CH&E 5500 Series Aluminum 3 inch diaphragm pump handles a wide range of fluid transfer challenges across demanding job sites and operations. Common applications include:
- Construction: Trench dewatering, foundation excavation, and site drainage
- Mining: Pit dewatering and slurry transfer in portable field configurations
- Municipal: Bypass pumping, sewer maintenance, and infrastructure projects
- Agricultural: Irrigation support, wellpoint systems, and field drainage
- Industrial: Industrial waste pumping, process water handling, and plant maintenance
- Marine: Marine tank pumping and bilge water removal
- Sanitation: Septic tank cleaning and waste fluid transfer
- Emergency Response: Flood cleanup and storm water removal in sandy or muddy conditions
5500 Series vs. 6500 Series: Aluminum vs. Cast Iron
The CH&E 5500 and 6500 Series are both 3 inch diaphragm pumps that share the same internal drivetrain and mechanical components. The primary difference is the housing material. Understanding which series best suits your operation helps ensure you order the correct wetted-end parts where material differences apply.
| Feature | 5500 Series | 6500 Series |
| Housing Material | Aluminum | Cast Iron |
| Inlet/Outlet Size | 3 inch | 3 inch |
| Weight | Lighter, easier to reposition | Heavier, maximum wear resistance |
| Internal Components | Shared across both series | Shared across both series |
| Drive Compatibility | Gas, electric, hydraulic | Gas, electric, hydraulic |
| Best For | Frequent relocation, standard-duty applications | Continuous duty, abrasive environments |
CH&E Diaphragm Water Pump 5500 Series Aluminum 3″ Repair Parts List
The following parts reference covers all serviceable components in the CH&E 5500 Series Aluminum 3″ diaphragm water pump. Use the part numbers below to identify and order the correct replacement components for your pump configuration.
Wetted-End and Fluid-Handling Components
| Part Number | Description |
| P3309AY-A1 | Suction Connection & Spring Assembly – Aluminum |
| P3310-A1 | Discharge Connection – Aluminum |
| P3308AY-A1 | Water Box & Spring Pin Assembly – Aluminum |
| P3306-A1 | Diaphragm Bottom – Aluminum |
| P3313 | Valve Weight / Flapper Weight |
| P3312 | Valve Binder / Flapper Weight |
| P3311N | Flapper – Neoprene |
| P3311B | Flapper – Buna-N |
Diaphragm Options
The CH&E 5500 Series Aluminum 3 inch diaphragm pump is available with five diaphragm material options. Selecting the correct material for your fluid type and operating environment is critical for maximizing diaphragm service life and pump reliability.
| Part Number | Material | Best For |
| P2726N | Neoprene | General-purpose water and light chemical applications |
| P2726B | Buna-N | Petroleum-based fluids and oils |
| P2726TPE | TPE | Potable water and food-grade applications |
| P2726R | Rubber | Abrasive slurries and general dewatering |
| P2726V | Viton | Aggressive chemical and solvent applications |
Pump Frame and Mechanical Components
| Part Number | Description |
| P4771 | Pump Frame |
| P3317 | Retaining Washer |
| P3305 | Connecting Rod |
| P5581 | Connecting Rod Bearing |
| W70-807 | Woodruff Key |
| P5583 | Crank Arm |
| W35-C12329CRW1 | Oil Seal / Lip Seal |
| 3/4″-16 LOK Nut | Jam Lock Nut |
| P3691 | Crank Arm Guard |
| P4953B | Crank Arm Guard (alternate) |
Gear Case Components
| Part Number | Description |
| P4850 | Case |
| P4851 | Cover |
| P4858 | Gasket |
| P4859 | O-Ring |
| P4853 | Gear Shaft |
| P5058 | 79 Tooth Gear |
| P4852 | 11 Tooth Pinion |
| P3417 | 85 Tooth Internal Gear |
| H705.025.0075 | Dowel Pin 1/4″ x 3/4″ |
Bearings and Seals
| Part Number | Description |
| W16-6307 | Ball Bearing |
| W16-6304 | Ball Bearing |
| W16-6302 | Ball Bearing |
| W16-6006LLU | Ball Bearing |
| W19-TB188 | Needle Bearing |
| W63-5100-118 | Retaining Ring |
Drive Adapter and Pinion Options
The CH&E 5500 Series Aluminum 3 inch diaphragm pump is compatible with gas engine, electric motor, and hydraulic motor drive configurations. Select the correct adapter and pinion combination for your drive type and shaft specification.
| Part Number | Description |
| P4856 | Engine Adapter (Gas) |
| P4857 | Electric Motor Adapter |
| P5601 | Key 3/16″ Sq x 1″ |
| P4854 | Pinion – 14 Tooth (3/4″ Bore) |
| P4855 | Pinion – 14 Tooth (5/8″ Bore x 3/16″ K.W.) |
| P4861 | Pinion (alternate specification) |
| P5175 | Pinion (alternate specification) |
Compatible Magnum Power Products Mud Hog Models
The CH&E 5500 Series repair parts are compatible with the following Magnum Power Products Mud Hog diaphragm pump configurations. If you service any of these models, the parts listed on this page apply to your pump as well.
- Magnum Power Products Mud Hog MCP 5515
- Magnum Power Products Mud Hog MCP 5537
- Magnum Power Products Mud Hog MCP 5538
- CH&E 5515 Series Diaphragm Pump
- CH&E 6500 Series (shared drivetrain components)
Maintenance and Service Guidance
Routine inspection and timely replacement of wear components keeps the CH&E 5500 Series Aluminum 3 inch diaphragm pump performing reliably across extended service cycles. The lightweight aluminum construction is well suited for field portability, but the fluid-handling components require consistent attention, particularly in abrasive pumping conditions.
- Inspect the diaphragm and flapper assemblies after every 250 hours of operation or when pump output drops noticeably
- Select the diaphragm material that matches your fluid type. Use Viton for chemical applications, Rubber or Neoprene for abrasive dewatering, Buna-N for petroleum-based fluids, and TPE for potable water service
- Check the connecting rod bearing and grease fitting at each scheduled service interval
- Inspect the oil seal and O-ring around the gear case for signs of leakage or deterioration
- Verify the correct drive adapter and pinion are installed for your engine or motor configuration before servicing the drivetrain
- Flush the pump thoroughly with clean water after handling abrasive, chemical, or solids-laden fluids
- Store the pump with the diaphragm in a relaxed position to extend its service life between deployments
- Confirm all fasteners are correctly torqued after any disassembly or component replacement
Frequently Asked Questions
What is the CH&E Diaphragm Water Pump 5500 Series Aluminum 3″ used for?
The CH&E 5500 Series Aluminum 3 inch diaphragm pump is used for seepage dewatering, construction site drainage, septic tank cleaning, industrial waste pumping, marine tank applications, small wellpoint systems, and dewatering in sandy, muddy, or trash-filled water. Its self-priming, dry-run-safe design makes it a practical choice for applications where consistent unattended operation is required.
Can the CH&E 5500 Series pump run dry without damage?
Yes. The CH&E 5500 Series Aluminum 3 inch diaphragm pump is designed to run dry indefinitely without internal damage. It also automatically re-primes when seepage reappears, making it well suited for intermittent flow conditions common in dewatering and wellpoint applications.
What diaphragm materials are available for the CH&E 5500 Series aluminum pump?
Five diaphragm materials are available: Neoprene for general-purpose water handling, Buna-N for petroleum-based fluids, TPE for potable water and food-grade applications, Rubber for abrasive slurry and dewatering work, and Viton for aggressive chemical and solvent applications. Matching the diaphragm material to your fluid type directly affects pump service life and reliability.
Is the CH&E 5500 Series compatible with electric motor and hydraulic motor drives?
Yes. The CH&E 5500 Series Aluminum 3 inch diaphragm pump is compatible with gas engine, electric motor, and hydraulic motor drive configurations. The correct adapter and pinion must be selected for each drive type. Use part P4856 for gas engine applications and part P4857 for electric motor configurations.
Are the CH&E 5500 Series repair parts compatible with the Magnum Power Products Mud Hog pumps?
Yes. The CH&E 5500 Series repair parts are compatible with the Magnum Power Products Mud Hog MCP 5515, MCP 5537, and MCP 5538 diaphragm pump configurations. If you service any of these Mud Hog models, the parts listed on this page apply directly to your pump.
What is the difference between the CH&E 5500 and 5400 Series diaphragm pumps?
The CH&E 5500 Series is a 3 inch diaphragm pump, while the 5400 Series is a 2 inch diaphragm pump. The 3 inch ports on the 5500 Series deliver higher flow volumes for applications requiring greater throughput. Both series share a similar drivetrain architecture but use different wetted-end and pump-specific components due to the difference in port size.
Where can I buy genuine CH&E 5500 Series aluminum repair parts?
Ken’s Distributing Company stocks the complete range of genuine CH&E 5500 Series Aluminum repair parts, including diaphragms, flapper assemblies, bearings, seals, gear case components, and drive adapters. Contact Kendisco directly for part availability, pricing, and technical support on all 5500 Series components.