The Wacker Neuson is a genuine OEM Neoprene Flapper Valve designed for the PDT3, PDT3A, PDI3, and PDI3A series 75mm/3-inch diaphragm trash pumps. Sourced directly from Wacker Neuson, this part meets the exact material and dimensional standards of the original component. The covers a broad range of pump configurations across both inline and standard diaphragm pump models, making it a straightforward stock item for service fleets and rental operations running this pump family. If your pump is losing prime, cycling erratically, or delivering inconsistent flow, a worn flapper valve is a common root cause — and this is the correct OEM replacement to restore proper operation.
Key Features
- Neoprene Material Grade — Neoprene construction provides resistance to abrasion, petroleum-based fluids, and the debris-laden water common in trash pump applications, helping the valve maintain a reliable seal over time.
- Direct OEM Replacement — Engineered to the same profile and flexibility as the original, this flapper valve seats and seals correctly within the valve housing without rework or shimming.
- Broad PDT3/PDI3 Family Coverage — Fits PDT3, PDT3A, PDI3, and PDI3A pump models across multiple serial configurations, consolidating one part number for common service stock.
- Restores Pump Flow and Prime Retention — A correctly seated flapper valve maintains one-way flow through the pump body; a failed valve allows backflow that causes loss of prime, weak discharge pressure, and erratic pumping cycles.
- Genuine Wacker Neuson OEM Part — Supplied as a genuine OEM component, confirming correct part number 5000118369 and full compatibility with the diaphragm pump valve assembly.
The flapper valve is a critical one-way check valve within a diaphragm pump's fluid end. As the diaphragm flexes, the flapper opens on the intake stroke to allow fluid in and closes firmly on the discharge stroke to force fluid out — creating the pumping action. When the neoprene material stiffens, tears, or loses its seating profile due to wear or chemical exposure, the valve can no longer hold a proper seal. This results in backflow, loss of prime, and a significant drop in discharge performance. Replacing a worn flapper valve with the correct OEM part restores the pump's ability to self-prime and maintain consistent flow, particularly when handling solids-laden or chemically active water.
Part Details
| Part Number | 5000118369 |
|---|---|
| Old Part Number | 0118369 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Neoprene Flapper Valve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 75mm/3in Diaphragm Trash Pump | PDT3A | 5000007614, 5000007615, 5000007616 |
| 75mm/3in Inline Diaphragm Tras h Pump | PDI3A | 5000007628, 5000007629, 5000009407 |
| 75mm/3in Diaphragm Trash Pumps | PDT3 | 5000009495, 5000007619 |
| 75mm/3in Diaphragm Trash Pump | PDI3 | 5000009491, 5000009492 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
