For additional parts such as flappers and valve assemblies, see the CH&E 3-inch pump parts breakdown for models 5500–6535.
Ken’s Distributing Company stocks and supplies OEM-fit CH&E and Magnum replacement diaphragms engineered for diaphragm-type trash and dewatering pumps used throughout the construction, municipal, industrial, and agricultural industries.
These diaphragms are the working heart of every CH&E pump. Each flexible disc separates the air and liquid chambers, allowing the pump to draw in and discharge water, slurry, and debris without mechanical seals or lubricants contacting the fluid. Proper diaphragm replacement is critical for maintaining suction lift, flow consistency, and overall pump efficiency.
We offer both individual replacements and bulk orders starting at 15 units or more, with discounted pricing for contractors, distributors, and small businesses. Every diaphragm is manufactured to OEM specifications for size, thickness, and compound composition to ensure proper fit and long service life.
CH&E positive-displacement diaphragm pumps are relied upon for:
These pumps handle liquids containing sand, mud, and small solids that would damage conventional impeller pumps.
Fits CH&E 2-inch pump models
5401, 5402, 5403, 5405, 6401, 6402, 6403, 6405.
Used For: light construction, irrigation systems, industrial slurry pumping, and general utility pumping.
Refer to the CH&E 2-inch pump parts breakdown for complete repair kits and related components.
| Part # | Compound | Application |
|---|---|---|
| P2331N | Neoprene | Standard for most water or slurry transfer. |
| P2331R | Rubber | Flexible diaphragm for clean or slightly gritty water. |
| P2331B | Buna-N | Excellent resistance to oil, fuel, and hydrocarbon-contaminated water. |
| P2331TEP | TPE | Thermoplastic Elastomer, resists wear and chemicals under heavy duty. |
Used For: construction dewatering, agricultural transfer, industrial slurry pumping, and industrial water movement.
For additional parts such as flappers and valve assemblies, see the CH&E 3-inch pump parts breakdown for models 5500–6535.
| Part # | Compound | Application |
|---|---|---|
| P2726N | Neoprene | General-purpose, abrasion-resistant. |
| P2726R | Rubber | Durable for water and light sludge. |
| P2726B | Buna-N | Fuel and oil resistant for hydrocarbon-contaminated or industrial use. |
| P2726TEP | TPE | Thermoplastic Elastomer, extended-life compound for heavy use. |
Used on CH&E 4-inch diaphragm pumps for large-volume dewatering, slurry movement, and flood control.
Used For: large-volume dewatering, flood control, sewer bypass operations, and industrial slurry pumping.
| Part # | Compound | Application |
|---|---|---|
| P2157B | Buna-N | Oil- and fuel-resistant for hydrocarbon-contaminated liquids. |
| P2157R | Rubber | Standard duty for clear or sediment-laden water. |
| P2157N | Neoprene | Chemical-resistant for wastewater and industrial use. |
| P2157T | TPE | Thermoplastic Elastomer, long-wear option with wide chemical tolerance. |
Refer to the CH&E 4-inch pump parts breakdown for complete repair parts, flappers, and valve assemblies.