CH&E 5500-6500 3″ Diaphragm Pump Parts Breakdown

The CH&E 5500-6500 is a heavy-duty 3 inch diaphragm pump built for demanding fluid transfer applications across construction, mining, agriculture, and industrial operations. The 5500 series uses an aluminum housing for lightweight portability, while the 6500 series uses cast iron construction for maximum durability in abrasive and high-wear environments.

Both series share the same core internal geometry, which means many components are interchangeable across aluminum and cast iron variants. The tables on this page identify which parts are shared and which are model-specific, making it straightforward to order with confidence.

CH&E 5500-6500 3 Inch Diaphragm Pump Key Features

• 3 inch inlet and outlet ports for high-volume fluid transfer
• Air-operated diaphragm design with self-priming capability
• Handles solids-laden fluids, slurries, and abrasive materials
• Dry-run safe operation without damage to internal components
• Available in aluminum (5500 Series) and cast iron (6500 Series) housing
• Compact and portable design for easy relocation between job sites
• Compatible with a wide range of hose and fitting configurations
• Low maintenance design to reduce operational downtime
• Gas-powered close-coupled configuration for field deployment

Industries and Applications

The CH&E 5500-6500 3 inch diaphragm pump is a proven performer across a wide range of demanding industries. Its self-priming design, dry-run capability, and ability to handle solids-laden fluids make it one of the most versatile diaphragm pumps available for field use.

• Construction and Dewatering: Removes groundwater and surface water from excavations, foundations, and trenches
• Agriculture and Irrigation: Transfers water from ponds, tanks, and open sources for crop irrigation and livestock watering
• Mining and Quarrying: Handles abrasive slurries, mine drainage, and sediment-laden water in demanding underground and open-pit environments
• Municipal and Industrial: Used for bypass pumping, spill response, and fluid transfer in utility and industrial maintenance operations
• Flood Recovery: Rapid deployment for flood cleanup and emergency water removal

Exploded parts

CH&E 5500-6500 3 Inch Diaphragm Pump Parts Breakdown

5500 vs. 6500 Series: Choosing the Right Model

The 5500 and 6500 Series share identical internal components, drivetrain parts, and rebuild kits. The primary difference is the housing material. Understanding which series fits your operation helps ensure you order the correct wetted-end parts where material differences apply.

Maintenance and Service Guidance

Keeping your CH&E 5500-6500 3″ diaphragm pump in peak condition requires routine inspection of wear components, particularly the diaphragm and flap valve assemblies. These are the first parts to show wear under heavy use and abrasive conditions.

• Inspect the diaphragm and flap valves after every 250 hours of operation or whenever pump output drops noticeably
• Check the connecting rod bearing and grease fitting at each scheduled service interval
• Inspect lip seals for signs of leakage around the gear case
• Verify all fasteners are torqued correctly after any disassembly
• Flush the pump with clean water after handling abrasive or chemically aggressive fluids
• Store the pump with the diaphragm in a relaxed position to extend service life

Kendisco carries the complete range of CH&E genuine replacement parts and rebuild kits to keep your 5500-6500 series pump running between scheduled overhauls.

Frequently Asked Questions

What is the difference between the CH&E 5500 and 6500 Series?

The 5500 Series uses an aluminum housing, making it lighter and easier to move between job sites. The 6500 Series uses cast iron construction for greater durability in environments where the pump is exposed to abrasive materials or heavy continuous use. All internal drivetrain and mechanical components are identical across both series.

Are the repair parts for the 5500 and 6500 Series interchangeable?

Most internal components, including the connecting rod, bearings, gears, seals, diaphragm, and flap valve assemblies, are shared between the 5500 and 6500 Series. The wetted-end parts, such as the suction connection, discharge connection, and water box, are series-specific due to the difference in housing material.

How many flap valve assemblies does the CH&E 5500-6500 pump require?

Each pump requires two flap valve assemblies. These are available in Buna-N, Neoprene, and Neoprene with Cloth Insert depending on the fluid type and operating conditions.

What rebuild kits are available for the CH&E 5500-6500 3″ diaphragm pump?

CH&E offers four rebuild kit options covering TPE, Rubber, Neoprene, and Buna-N materials. Each kit includes the diaphragm and flapper assemblies along with all required hardware for a complete pump rebuild.

What mounting configurations are available for the 5500-6500 Series?

The CH&E 5500-6500 3 inch diaphragm pump is available in skid mounting, wheel mounting, and cage mounting close-coupled configurations. Each mounting option has its own set of hardware components listed in the parts breakdown above.

Where can I buy genuine CH&E 5500-6500 replacement parts?

Ken’s Distributing Company stocks genuine CH&E replacement parts and rebuild kits for the complete 5500-6500 Series. Contact Kendisco directly for part availability, pricing, and technical support.

Related CH&E Diaphragm Pump Parts

If you are sourcing parts for other models in the CH&E diaphragm pump family, the following pages may also be useful:

• CH&E 5500 Series Aluminum 3″ Diaphragm Pump Repair Parts
• CH&E 6500 Series Cast Iron 3″ Diaphragm Pump Repair Parts
• CH&E 5400 Series Aluminum 2″ Diaphragm Pump Repair Parts
• CH&E 5400-6400 Repair Parts