The Wacker Neuson is a genuine OEM Buna Flapper Valve designed for the PDT3, PDT3A, PDI3, and PDI3A series 75mm/3in diaphragm trash pumps. Sourced directly from Wacker Neuson, this part meets the exact material and dimensional specifications required for proper valve function in these pumps. It fits the full range of PDT3/PDT3A direct-discharge and PDI3/PDI3A inline diaphragm trash pump configurations. Verify your model number before ordering to ensure a correct match.
Key Features
- Buna-N Rubber Construction — Buna (nitrile) material delivers excellent resistance to petroleum-based fluids, slurries, and the abrasive media these trash pumps routinely handle.
- Genuine OEM Part — Manufactured to Wacker Neuson's original valve geometry and durometer specifications, ensuring the flapper seats and seals correctly within the pump's valve housing.
- Broad PDT3/PDI3 Series Fitment — Compatible with PDT3, PDT3A, PDI3, and PDI3A 75mm/3in diaphragm trash pumps across multiple serial number ranges — confirm your model before ordering.
- Maintains Pump Flow and Prime — A correctly functioning flapper valve holds directional flow and sustains prime; a worn or cracked valve causes backflow, loss of suction, and reduced output volume.
- Drop-In Valve Replacement — Matches the original flapper profile and mounting configuration, allowing straightforward installation without machining or modification to the valve body.
The flapper valve is a one-way check valve inside a diaphragm pump's fluid end. As the diaphragm strokes, the flapper opens to allow fluid to pass in the correct direction and closes to prevent it from flowing back. This directional control is what allows the pump to build suction, maintain prime, and move fluid efficiently. When the flapper cracks, hardens, or deforms — common in pumps handling gritty or chemically aggressive media — the pump loses suction, output drops noticeably, and the unit may fail to prime altogether. Replacing a worn flapper valve with the correct Buna-grade part restores proper pump function immediately.
Part Details
| Part Number | 5000119320 |
|---|---|
| Old Part Number | 0119320 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Buna 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.
